Invacare Wheelchair 2Gt Users Manual 1114842A

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Service Manual

DEALER: Keep this manual. The

procedures in this manual MUST be

performed by a qualified technician.

For more information regarding

Invacare products, parts, and services,

please visit www.invacare.com

2G Tarsys®Powered

Seating System

2GT™- Tilt Only

2GR™- Recline Only

2GTR™- Tilt/Recline

on

TDX®Wheelchairs

USEFUL TERMS

2G Tarsys®Powered Seating System 2Part No 1114842

 WARNING

A QUALIFIED TECHNICIAN MUST PERFORM THE INITIAL SET UP

OF THIS SEATING SYSTEM. ALSO, A QUALIFIED TECHNICIAN

MUST PERFORM ALL PROCEDURES IN THIS SERVICE MANUAL.

DEALERS AND QUALIFIED TECHNICIANS: DO NOT SERVICE OR

OPERATE THIS EQUIPMENT WITHOUT FIRST READING AND

UNDERSTANDING (1) THE OWNER’S OPERATOR AND

MAINTENANCE MANUAL, (2) THE SERVICE MANUAL (IF

APPLICABLE) AND (3) THE SEATING SYSTEM’S MANUAL (IF

APPLICABLE). IF YOU ARE UNABLE TO UNDERSTAND THE

WARNINGS, CAUTIONS AND INSTRUCTIONS, CONTACT

INVACARE TECHNICAL SUPPORT BEFORE ATTEMPTING TO

SERVICE OR OPERATE THIS EQUIPMENT - OTHERWISE, INJURY

OR DAMAGE MAY RESULT.

USEFUL TERMS

The following acronyms are used throughout this manual:

\

REFERENCE DOCUMENTS

Refer to the table below for part numbers of additional documents which are referenced

in this manual.

ACRONYM DEFINITION

BPO Back Post Only option ordered on Tilt Only systems.

TRSS Tilt Recline Single Switch

SAC Single Actuator Control

TAC Two Actuator Control

TRCM Tilt Recline Control Module

VSR Vernier Shear Reduction

TDX BASE OWNER’S

MANUAL

TDX SERVICE MANUAL ELECTRONICS MANUAL

1114809 1114819 1114808 - MK5™EX™and MK5

TT-EX

NOTE: Updated versions of this manual are available on www.invacare.com.

TABLE OF CONTENTS

Part No 1114842 32G Tarsys®Powered Seating System

TABLE OF CONTENTS

USEFUL TERMS ................................................................................. 2

REFERENCE DOCUMENTS ................................................................. 2

SPECIAL NOTES ................................................................................ 9

LABEL LOCATIONS ......................................................................... 11

TYPICAL PRODUCT PARAMETERS .................................................. 12

SECTION 1—GENERAL GUIDELINES ................................................. 14

Repair or Service Information ...............................................................................................................14

Operation Information............................................................................................................................14

Grounding Instructions ...........................................................................................................................16

SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS ......................... 17

Pinch Points................................................................................................................................................17

SECTION 3—EMI INFORMATION ..................................................... 18

SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING .................... 20

Safety Inspection Checklist.....................................................................................................................20

Post-Service Inspection Checklist.........................................................................................................21

Troubleshooting........................................................................................................................................22

SECTION 5—INTERFACE HARDWARE .............................................. 24

Repositioning the Seat.............................................................................................................................24

About Repositioning the Seat ...........................................................................................................24

Repositioning the Seat on 2GR Systems ........................................................................................24

Repositioning the Seat for 2GT and 2GTR Systems....................................................................33

Removing/Installing the Rear Pivot Assembly ....................................................................................41

Tilt Only and Tilt/Recline Systems...................................................................................................41

Recline Only Systems..........................................................................................................................44

Removing/Installing the Front Pivot Assembly...................................................................................45

Removing ...............................................................................................................................................45

Installing..................................................................................................................................................45

Removing/Installing the Linear Guides.................................................................................................46

Removing/Installing the Seat Brackets .................................................................................................48

Tilt Only and Tilt/Recline Systems...................................................................................................48

Recline Only Systems..........................................................................................................................51

Removing/Installing the Lower Interface Brackets............................................................................52

Removing ...............................................................................................................................................52

Installing..................................................................................................................................................52

SECTION 6—SEAT ADJUSTMENTS .................................................... 54

Replacing Seat Positioning Strap ...........................................................................................................54

TABLE OF CONTENTS

2G Tarsys®Powered Seating System 4Part No 1114842

TABLE OF CONTENTS

Removing/Installing Seat Pan..................................................................................................................54

Removing ...............................................................................................................................................54

Installing..................................................................................................................................................54

Adjusting Seat Width...............................................................................................................................55

Preparing to Adjust Seat Width .......................................................................................................55

Tilt-Only Seating Systems...................................................................................................................56

Recline Only or Tilt/Recline Seating Systems................................................................................57

Adjusting Seat Depth ...............................................................................................................................58

About Seat Depth................................................................................................................................58

Adjusting Seat Depth...........................................................................................................................60

Adjusting Seat Angle ................................................................................................................................61

Tilt-Only and Tilt/Recline Seating Systems ....................................................................................61

Recline-Only Seating Systems ...........................................................................................................61

Removing/Installing Side Frames ...........................................................................................................66

Removing Side Frames........................................................................................................................66

Preparing Side Frames for Replacement.........................................................................................67

Installing Side Frames ..........................................................................................................................69

Removing/Installing Center Seat Frame ..............................................................................................70

Removing Center Seat Frame ...........................................................................................................70

Installing Center Seat Frame .............................................................................................................71

Adjusting/Replacing Telescoping Front Rigging Supports................................................................73

Adjusting/Replacing Leg Support Tubes ..............................................................................................73

Adjusting Leg Support Tubes ............................................................................................................73

Replacing Leg Support Tubes............................................................................................................74

Removing/Installing the Seat...................................................................................................................75

Removing ...............................................................................................................................................75

Installing..................................................................................................................................................77

SECTION 7—BACK ADJUSTMENTS .................................................. 80

Adjusting Back Width..............................................................................................................................80

Adjusting Back Angle ...............................................................................................................................80

Removing/Installing the Curved Links..................................................................................................82

Tilt Only Systems.................................................................................................................................82

Recline Only and Tilt/Recline Systems............................................................................................83

Removing/Installing Back Pan .................................................................................................................85

Removing ...............................................................................................................................................85

Installing..................................................................................................................................................85

Removing/Installing Spreader Bar .........................................................................................................87

Slotted Back Canes..............................................................................................................................87

Round Back Canes...............................................................................................................................88

TABLE OF CONTENTS

Part No 1114842 52G Tarsys®Powered Seating System

TABLE OF CONTENTS

Removing/Installing Back Canes ............................................................................................................89

Removing ...............................................................................................................................................89

Installing..................................................................................................................................................89

Removing/Installing Back Slide Assembly ............................................................................................90

Removing ...............................................................................................................................................90

Installing..................................................................................................................................................90

Removing/Installing Back Assembly ......................................................................................................91

Removing ...............................................................................................................................................91

Installing..................................................................................................................................................91

Adjusting the Back Height ......................................................................................................................92

Overview ...............................................................................................................................................92

Removing/Installing Arm Pivots.............................................................................................................93

Removing ...............................................................................................................................................93

Installing..................................................................................................................................................93

Removing/Installing/Adjusting Chest Positioning Strap....................................................................94

Removing ...............................................................................................................................................94

Installing..................................................................................................................................................94

Adjusting Height...................................................................................................................................94

Installing/Removing/Adjusting Lateral Supports.................................................................................95

Slotted Canes........................................................................................................................................95

Round Canes.........................................................................................................................................97

SECTION 8—SHROUDS .................................................................... 99

Shroud Overview .....................................................................................................................................99

Removing/Installing VSR Shroud ........................................................................................................ 100

Removing/Installing Side Shrouds....................................................................................................... 100

Removing/Installing Rear Seat Shroud .............................................................................................. 101

Removing/Installing Rear Shroud ....................................................................................................... 102

Removing/Installing Lower Seat Shroud........................................................................................... 102

SECTION 9—POWER ELEVATING LEGRESTS .................................... 104

Installing/Removing the Power Elevating Legrests ......................................................................... 104

Installing the Power Elevating Legrests ........................................................................................ 105

Removing the Power Elevating Legrests...................................................................................... 105

Adjusting the Power Elevating Legrests ........................................................................................... 106

Adjusting the Footplate ................................................................................................................... 106

Adjusting the Calf Pad...................................................................................................................... 108

Adjusting the Length of Power Legrest ....................................................................................... 110

Removing/Installing the Power Elevating Legrest Harness .......................................................... 110

Removing ............................................................................................................................................ 110

Installing............................................................................................................................................... 110

TABLE OF CONTENTS

2G Tarsys®Powered Seating System 6Part No 1114842

TABLE OF CONTENTS

Removing/Installing the Power Elevating Legrest Actuator......................................................... 112

Removing ............................................................................................................................................ 112

Installing............................................................................................................................................... 112

SECTION 10—ARMS ...................................................................... 114

Removing/Installing Reclining Armrests ........................................................................................... 114

Removing Armrests.......................................................................................................................... 114

Installing Armrests ............................................................................................................................ 114

Adjusting Armrest Height.................................................................................................................... 115

Installing/Removing Flip-Back Armrests ........................................................................................... 116

Installing............................................................................................................................................... 116

Removing ............................................................................................................................................ 117

Adjusting Flip-Back Armrest Height.................................................................................................. 118

SECTION 11—CENTER MOUNT FOOTRESTS ................................... 119

Removing/Installing the Center Mount Footrest ........................................................................... 119

Removing ............................................................................................................................................ 119

Installing............................................................................................................................................... 119

Adjusting the Height of the Center Mount Footrest.................................................................... 120

Adjusting the Angle of the Center Mount Footrest...................................................................... 121

Adjusting the Center Mount Footplate Angle ................................................................................ 121

After 2/14/07...................................................................................................................................... 121

Before 2/15/07................................................................................................................................... 122

Adjusting the Tension of the Center Mount Footplate................................................................ 122

Removing/Installing the Release Lever Assembly........................................................................... 122

SECTION 12—HEADREST .............................................................. 124

Removing/Installing/Adjusting Headrest ........................................................................................... 124

Removing ............................................................................................................................................ 124

Installing............................................................................................................................................... 124

Adjusting Headrest Height.............................................................................................................. 125

Adjusting Headrest Depth/Direction ........................................................................................... 125

Replacing Headrest ............................................................................................................................... 125

SECTION 13—TILT AND RECLINE .................................................. 126

A Note About Drive Lock-Out ......................................................................................................... 126

Operating Powered Seating Systems ................................................................................................ 127

Single Function Toggle Switch (TRSS).......................................................................................... 128

Optional Four-Way Toggle Switch ............................................................................................... 129

Vernier Shear Reduction (2G Tarsys Systems Only) ............................................................... 130

Removing/Installing the Tilt Actuator ............................................................................................... 131

Removing ............................................................................................................................................ 131

Installing............................................................................................................................................... 131

Removing/Installing the VSR Actuator.............................................................................................. 132

TABLE OF CONTENTS

Part No 1114842 72G Tarsys®Powered Seating System

TABLE OF CONTENTS

Removing ............................................................................................................................................ 132

Installing............................................................................................................................................... 133

Removing/Installing the Recline Actuator........................................................................................ 133

Removing ............................................................................................................................................ 133

Installing............................................................................................................................................... 133

Testing the Actuators........................................................................................................................... 134

Removing/Installing Recline Links ...................................................................................................... 135

Removing ............................................................................................................................................ 135

Installing............................................................................................................................................... 135

Removing/Installing Tilt Links.............................................................................................................. 137

Removing ............................................................................................................................................ 137

Installing............................................................................................................................................... 137

SECTION 14—ELECTRONICS .......................................................... 139

Removing/Installing the Single Actuator Control (SAC) .............................................................. 139

Removing ............................................................................................................................................ 139

Installing............................................................................................................................................... 140

Removing/Installing the TAC or TRCM ........................................................................................... 141

Removing the TAC/TRCM Controller Bracket......................................................................... 141

Installing the TAC/TRCM Controller Bracket........................................................................... 142

Removing the TAC/TRCM from the Controller Bracket ....................................................... 144

Installing the TAC/TRCM onto the Controller Bracket.......................................................... 144

Programming the TAC ......................................................................................................................... 146

Calibrating the Tilt Potentiometer for a TAC................................................................................ 146

Replacing the Tilt Recline Single Switch (TRSS) ............................................................................. 148

Removing/Installing Joystick(s)............................................................................................................ 149

Removing ............................................................................................................................................ 149

Installing............................................................................................................................................... 149

Drive Lock-Out...................................................................................................................................... 150

Removing/Installing the Tilt Potentiometer..................................................................................... 150

Removing ............................................................................................................................................ 150

Installing............................................................................................................................................... 151

Adjusting the Tilt Potentiometer....................................................................................................... 152

Adjusting a Tilt Potentiometer Used With a TRSS................................................................... 152

Adjusting Tilt Potentiometer Used With a TRCM, TAC or SAC......................................... 153

Adjusting Recline Potentiometer....................................................................................................... 154

Removing/Installing the Recline Potentiometer.............................................................................. 155

Removing ............................................................................................................................................ 155

Installing............................................................................................................................................... 155

TABLE OF CONTENTS

2G Tarsys®Powered Seating System 8Part No 1114842

TABLE OF CONTENTS

SECTION 15—WIRING AND CABLES .............................................. 157

Securing the Cables............................................................................................................................... 157

TAC Cables........................................................................................................................................ 157

Tilt Actuator Cable........................................................................................................................... 158

Tilt Potentiometer Cable ................................................................................................................ 158

Power Elevating Legrest, Recline Actuator and Recline Potentiometer Cables................ 159

4-Way Switch, TRCM and/or TAC Cables................................................................................. 161

Joystick, SAC or TRSS Cables........................................................................................................ 163

All Cables (Final Steps) .................................................................................................................... 163

Wiring Schematics................................................................................................................................. 164

TRSS..................................................................................................................................................... 164

SAC ...................................................................................................................................................... 165

TRCM/TAC........................................................................................................................................ 166

LIMITED WARRANTY ................................................................... 168

SPECIAL NOTES

Part No 1114842 92G Tarsys®Powered Seating System

SPECIAL NOTES

Signal words are used in this manual and apply to hazards or unsafe practices which

could result in personal injury or property damage. Refer to the table below for

definitions of the signal words.

NOTICE

THE INFORMATION CONTAINED IN THIS DOCUMENT IS SUBJECT TO

CHANGE WITHOUT NOTICE.

WHEELCHAIR TIE-DOWN RESTRAINTS AND SEAT RESTRAINTS (TRBKTS)

TRBKTS includes four factory-installed wheelchair transport brackets. TRBKTS has

not been crash-tested in accordance with WC 19. Use these transport brackets only

to secure an unoccupied wheelchair during transport.

As of this date, the Department of Transportation has not approved any tie-down

systems for transportation of a user while in a wheelchair, in a moving vehicle of any

type. It is Invacare’s position that users of wheelchairs should be transferred into

appropriate seating in vehicles for transportation and use be made of the restraints

made available by the auto industry. Invacare cannot and does not recommend any

wheelchair transportation systems.

 TRBKTS WARNINGS

Only use the transport brackets included with TRBKTS for the purposes described

in the wheelchair base owner’s manual.

 WARNING

Invacare products are specifically designed and manufactured for use in conjunction

with Invacare accessories. Accessories designed by other manufacturers have not

been tested by Invacare and are not recommended for use with Invacare products.

The seat positioning strap is a positioning belt ONLY. It is not designed for use as a

safety device withstanding high stress loads such as auto or aircraft safety belts. If

signs of wear appear, belt MUST be replaced immediately.

Wheelchairs should be examined during maintenance for signs of corrosion (water

exposure, incontinence, etc.). Electrical components damaged by corrosion should

be replaced IMMEDIATELY.

SIGNAL WORD MEANING

DANGER

Danger indicates an imminently hazardous situation which, if not avoided,

will result in death or serious injury.

WARNING

Warning indicates a potentially hazardous situation which, if not avoided,

could result in death or serious injury.

CAUTION

Caution indicates a potentially hazardous situation which, if not avoided,

may result in property damage.

SPECIAL NOTES

2G Tarsys®Powered Seating System 10 Part No 1114842

 WARNING

Wheelchairs that are used by incontinent users and/or are frequently exposed to

water may require replacement of electrical components more frequently.

Refer to wheelchair base service manual for additional safety and operation

information.

LABEL LOCATIONS

Part No 1114842 11 2G Tarsys®Powered Seating System

LABEL LOCATIONS

NOTE: These labels are present on

both sides of the seating system.

TYPICAL PRODUCT PARAMETERS

2G Tarsys®Powered Seating System 12 Part No 1114842

TYPICAL PRODUCT PARAMETERS

2G TARSYS SEATING SYSTEM

SEAT WIDTH RANGE: 16 - 22 inches in 1-inch increments

SEAT DEPTH RANGE: 16 - 22 inches in 1-inch increments

BACK HEIGHT RANGE

TILT/RECLINE:

RECLINE:

TILT:

20 - 26 inches in 1-inch increments

20 - 26 inches in 1-inch increments

20 - 25 inches in 1-inch increments

BACK ANGLE RANGE

TILT: 90° - 115° in 5° increments

TILT RANGE

TILT AND TILT/RECLINE

0° Seat Angle:

5° Seat Angle:

0° - 45° ± 3°

5° - 50° ± 3°

RECLINE RANGE (MEASURED RELATIVE

TO THE GROUND)

RECLINE

0° Seat Angle:

5° Seat Angle:

10° Seat Angle:

15° Seat Angle:

TILT/RECLINE

0° Seat Angle:

5° Seat Angle:

90° - 175° ± 3°

95° - 175° ± 3°

100° - 175° ± 3°

105° - 175° ± 3°

90° - 175° ± 3°

95° - 175° ± 3°

SEAT-TO-FLOOR

0° SEAT ANGLE:

5° SEAT ANGLE:

18.5 inches ± .25 inches

20 inches ± .25 inches

*OVERALL WIDTH

WITH 4-WAY SWITCH: 28.9 inches

*OVERALL HEIGHT

(WITHOUT HEADREST): 40.9 inches

*OVERALL LENGTH

WITH CENTER MOUNT FOOTREST AT 90°:

WITHOUT FRONT RIGGINGS, FULL LENGTH

ARM, MPJ™ JOYSTICK:

41.5 inches

39.3 inches

ARMRESTS

TILT:

RECLINE AND TILT/RECLINE:

Flip Back, Adjustable Height (9 - 13 inches) - Desk or Full

Length

Adjustable Height (11 - 16 inches) - Desk or Full Length

LEGRESTS: Swingaway Footrests, Center Mount Footrests, Mechanical

Elevating, Genius Legrests, or Power Elevating Legrests

HEADRESTS: Curved, Contoured, Small or Large

*NOTE: 20 inch deep x 20 inch wide with 24 inch high back.

NOTE: All dimensions are ± .50 inches unless otherwise indicated.

NOTE: All parameters apply to Tilt only, Recline only and Tilt/Recline systems except where

specified. All parameters are approximate.

TYPICAL PRODUCT PARAMETERS

Part No 1114842 13 2G Tarsys®Powered Seating System

 WARNING

If the seating system is mounted onto a power wheelchair that has a weight

limitation greater than that of the seating system, the weight limitation is

maintained at the seating system’s limitation. (Example: If the wheelchair is a TDX

5 with a 400 lb. weight limitation, the seating system still has a weight limitation of

350 lbs.).

WEIGHT LIMITATION:

ALL SEATING SYSTEMS WITHOUT HEAVY

DUTY OPTION:

TILT ONLY, RECLINE ONLY OR TILT/RECLINE

SYSTEMS WITH HEAVY DUTY OPTION:

ALL SEATING SYSTEMS WITH VENT TRAY:

250 lbs

350 lbs

Subtract 50 lbs from the seating system weight limitations

(200 and 300 lbs respectively)

BATTERY REQUIREMENTS: Refer to Batteries on page 137.

ELECTRONICS

SEATING SYSTEM CONTROL MODULES:

WHEELCHAIR CONTROL MODULE:

JOYSTICKS:

TRCM, SAC, TAC, TRSS

MK5 EX or MK5 TT-EX

MPJ™or DPJ™

2G TARSYS SEATING SYSTEM

*NOTE: 20 inch deep x 20 inch wide with 24 inch high back.

NOTE: All dimensions are ± .50 inches unless otherwise indicated.

NOTE: All parameters apply to Tilt only, Recline only and Tilt/Recline systems except where

specified. All parameters are approximate.

SECTION 1—GENERAL GUIDELINES

2G Tarsys®Powered Seating System 14 Part No 1114842

SECTION 1—GENERAL GUIDELINES

 WARNING

SECTION 1 - GENERAL GUIDELINES contains important information for the safe

operation and use of this product. DO NOT use this product or any available

optional equipment without first completely reading and understanding these

instructions and any additional instructional material such as Owner’s Manuals,

Service Manuals or Instruction Sheets supplied with this product or optional

equipment. If you are unable to understand the Warnings, Cautions or Instructions,

contact a healthcare professional, dealer or technical personnel before attempting

to use this equipment - otherwise, injury or damage may occur.

Repair or Service Information

Except for programming, DO NOT service or adjust the wheelchair while occupied,

unless otherwise noted.

After ANY adjustments, repair or service and before use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the wheelchair

power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may occur.

Cables MUST be routed and secured properly to ensure that the cables DO NOT become

entangled and damaged during normal operation of seating system.

Cables MUST be secured to the wheelchair frame and/or base with tie-wraps after

servicing is complete. Failure to follow the warnings and instructions listed within this

manual could result in injury to the users, attendants and/or bystanders and/or damage

to the wheelchair.

Cables MUST be secured so there are no loops of excess cable extending away from the

wheelchair. Bundle all excess cable together and secure with a tie-wrap. It may also be

necessary to secure these bundles to the frame and/or base.

ALWAYS test all wheelchair functions after securing the cables to be sure cables DO NOT

get pinched, crushed, or strained during operation of the wheelchair.

Operation Information

Invacare products are specifically designed and manufactured for use in conjunction with

Invacare accessories. Accessories designed by other manufacturers have not been tested

by Invacare and are not recommended for use with Invacare products.

DO NOT attempt to lift the wheelchair by any removable (detachable) parts. Lifting by

means of any removable (detachable) parts of a wheelchair may result in injury to the user

or damage to the wheelchair.

SECTION 1—GENERAL GUIDELINES

Part No 1114842 15 2G Tarsys®Powered Seating System

Performance adjustments should only be made by professionals of the healthcare field or

persons fully conversant with this process and the driver's capabilities. Incorrect settings

could cause injury to the driver, bystanders, damage to the chair and to surrounding

property.

After the seating system has been set-up/adjusted, check to make sure that the seating

system performs to the specifications entered during the set-up procedure. If the seating

system does NOT perform to specifications, turn the wheelchair OFF IMMEDIATELY

and re-enter the set-up specifications. Repeat this section until the seating system

performs to specifications. Refer to Reference Documents on page 2.

Avoid storage or use near external flame or combustible products.

DO NOT operate the seating system while on an incline.

DO NOT operate the seating system while the wheelchair is moving.

NEVER operate the wheelchair while in any tilted/reclined/back angle position over 20°

relative to the vertical position. If the drive lock-out does not stop the wheelchair from

operating in a tilt position over 20° relative to the vertical position, DO NOT operate the

wheelchair. The drive lock-out settings MUST be adjusted.

Pinch points may occur when returning the tilted seat to the full upright position. Make

sure the hands and body of both the occupant and attendants/bystanders are clear of all

pinch points before returning the tilted seat to the full upright position.

DO NOT operate tilt seat around children.

DO NOT overtighten hardware attaching to the frame. This could damage the frame

tubing.

ALWAYS keep hands and fingers clear of moving parts to avoid injury.

ALWAYS keep hands and feet out from underneath tilt seat - otherwise serious injury

may result.

When on an incline, NEVER leave an unoccupied wheelchair unattended at any time.

Use only SAC, TRSS, TRCM and TAC actuator controls to activate the tilt/recline

functions*. DO NOT USE any other actuator controls. Such devices may result in excess

heating and cause damage to the actuator and associated cables and could cause a fire,

death, physical injury or property damage. If such devices are used, Invacare shall not be

liable and the limited warranty is void.

*NOTE: Specific actuator controls are noted for each function or combination throughout this

manual.

SECTION 1—GENERAL GUIDELINES

2G Tarsys®Powered Seating System 16 Part No 1114842

Grounding Instructions

DO NOT, under any circumstances, cut or remove the round grounding prong from any

plug used with or for Invacare products. Some devices are equipped with three-prong

(grounding) plugs for protection against possible shock hazards. Where a two-prong wall

receptacle is encountered, it is the personal responsibility and obligation of the customer

to contact a qualified electrician and have the two-prong receptacle replaced with a

properly grounded three-prong wall receptacle in accordance with the National Electrical

Code. If you must use an extension cord, use ONLY a three-wire extension cord having

the same or higher electrical rating as the device being connected. In addition, Invacare

has placed RED/ORANGE warning tags on some equipment. DO NOT remove these tags.

SECTION 2—SAFETY/HANDLING OF WHEELCHAIRS

Part No 1114842 17 2G Tarsys®Powered Seating System

SECTION 2—SAFETY/HANDLING OF

WHEELCHAIRS

Pinch Points

NOTE: For this procedure, refer to FIGURE 2.1.

 WARNING

Pinch points may occur when returning the tilted seat to the full upright position.

Make sure the hands and body of both the occupant and attendants/bystanders are

clear of all pinch points before returning the tilted seat to the full upright position.

FIGURE 2.1 Pinch Points

Fully Tilted Seat

Pinch Point

Pinch Points

SECTION 3—EMI INFORMATION

2G Tarsys®Powered Seating System 18 Part No 1114842

SECTION 3—EMI INFORMATION

 WARNING

CAUTION: IT IS VERY IMPORTANT THAT YOU READ THIS INFORMATION

REGARDING THE POSSIBLE EFFECTS OF ELECTROMAGNETIC

INTERFERENCE ON YOUR POWERED WHEELCHAIR.

Electromagnetic Interference (EMI) From Radio Wave Sources

Powered wheelchairs and motorized scooters (in this text, both will be referred to

as powered wheelchairs) may be susceptible to electromagnetic interference (EMI),

which is interfering electromagnetic energy (EM) emitted from sources such as

radio stations, TV stations, amateur radio (HAM) transmitters, two way radios, and

cellular phones. The interference (from radio wave sources) can cause the powered

wheelchair to release its brakes, move by itself, or move in unintended directions. It

can also permanently damage the powered wheelchair's control system. The

intensity of the interfering EM energy can be measured in volts per meter (V/m).

Each powered wheelchair can resist EMI up to a certain intensity. This is called its

“immunity level.” The higher the immunity level, the greater the protection. At

this time, current technology is capable of achieving at least a 20 V/m immunity

level, which would provide useful protection from the more common sources of

radiated EMI.

There are a number of sources of relatively intense electromagnetic fields in the

everyday environment. Some of these sources are obvious and easy to avoid.

Others are not apparent and exposure is unavoidable. However, we believe that by

following the warnings listed below, your risk to EMI will be minimized.

The sources of radiated EMI can be broadly classified into three types:

1) Hand-held Portable transceivers (transmitters-receivers with the antenna

mounted directly on the transmitting unit. Examples include: citizens band (CB)

radios, “walkie talkie”, security, fire and police transceivers, cellular telephones,

and other personal communication devices. NOTE: Some cellular telephones

and similar devices transmit signals while they are ON, even when not being

used;

2) Medium-range mobile transceivers, such as those used in police cars, fire trucks,

ambulances and taxis. These usually have the antenna mounted on the outside of

the vehicle; and

3) Long-range transmitters and transceivers, such as commercial broadcast

transmitters (radio and TV broadcast antenna towers) and amateur (HAM)

radios.

NOTE: Other types of hand-held devices, such as cordless phones, laptop computers,

AM/FM radios, TV sets, CD players, cassette players, and small appliances, such as

electric shavers and hair dryers, so far as we know, are not likely to cause EMI problems

to your powered wheelchair.

SECTION 3—EMI INFORMATION

Part No 1114842 19 2G Tarsys®Powered Seating System

 WARNING

Powered Wheelchair Electromagnetic Interference (EMI)

Because EM energy rapidly becomes more intense as one moves closer to the

transmitting antenna (source), the EM fields from hand-held radio wave sources

(transceivers) are of special concern. It is possible to unintentionally bring high

levels of EM energy very close to the powered wheelchair's control system while

using these devices. This can affect powered wheelchair movement and braking.

Therefore, the warnings listed below are recommended to prevent possible

interference with the control system of the powered wheelchair.

Electromagnetic interference (EMI) from sources such as radio and TV stations,

amateur radio (HAM) transmitters, two-way radios, and cellular phones can affect

powered wheelchairs and motorized scooters.

FOLLOWING THE WARNINGS LISTED BELOW SHOULD REDUCE THE

CHANCE OF UNINTENDED BRAKE RELEASE OR POWERED WHEELCHAIR

MOVEMENT WHICH COULD RESULT IN SERIOUS INJURY.

1) DO NOT operate hand-held transceivers (transmitters receivers), such as

citizens band (CB) radios, or turn ON personal communication devices, such as

cellular phones, while the powered wheelchair is turned ON;

2) Be aware of nearby transmitters, such as radio or TV stations, and try to avoid

coming close to them;

3) If unintended movement or brake release occurs, turn the powered wheelchair

OFF as soon as it is safe;

4) Be aware that adding accessories or components, or modifying the powered

wheelchair, may make it more susceptible to EMI (NOTE: There is no easy way

to evaluate their effect on the overall immunity of the powered wheelchair); and

5) Report all incidents of unintended movement or brake release to the powered

wheelchair manufacturer, and note whether there is a source of EMI nearby.

Important Information

1) 20 volts per meter (V/m) is a generally achievable and useful immunity level

against EMI (as of May 1994) (the higher the level, the greater the protection);

2) This device has been tested to a radiated immunity level of 20 volts per meter.

3) The immunity level of the product is unknown.

Modification of any kind to the electronics of this wheelchair as manufactured by

Invacare may adversely affect the EMI immunity levels.

SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING

2G Tarsys®Powered Seating System 20 Part No 1114842

SECTION 4—SAFETY

INSPECTION/TROUBLESHOOTING

Safety Inspection Checklist

These adjustments should be made whenever this product is serviced, especially as

part of the initial unit setup. Follow these procedures:

CAUTION

As with any vehicle, the wheels and tires should be checked periodically for cracks

and wear, and should be replaced.

❑Make sure all electrical connections are secure.

❑Check that cables are routed and secured properly to ensure that cables DO NOT

become entangled and damaged during normal operation of seating system.

❑Make sure drive lock-out works properly.

❑Make sure tilt operates smoothly and properly.

❑Make sure recline operates smoothly and properly.

❑Ensure all fasteners are secure on clothing guards.

❑Ensure arms are secure but easy to release.

❑Ensure arm adjustment levers operate and lock securely.

❑Ensure adjustable height arms operate and lock securely.

❑Inspect for rips in upholstery on armrests.

❑Ensure armrest pad sits flush against arm tube.

❑Inspect seat and back cushions for rips or sagging.

❑Inspect hand grips for looseness. If loose, have them replaced by a qualified

technician.

❑Inspect seat positioning strap for any signs of wear. Ensure buckle latches. Verify

hardware that attaches strap to frame is secure and undamaged. Replace if necessary.

❑Check that all labels are present and legible. Replace if necessary.

SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING

Part No 1114842 21 2G Tarsys®Powered Seating System

Post-Service Inspection Checklist

 WARNING

NEVER operate the wheelchair while in any tilted/reclined/back angle position over

20° relative to the vertical position. If the drive lock-out does not stop the

wheelchair from operating in a tilt position over 20° relative to the vertical position,

DO NOT operate the wheelchair. The drive lock-out settings MUST be adjusted.

Refer to Reference Documents on page 2.

Cables MUST be secured to the wheelchair frame and/or base with tie-wraps after

servicing is complete. Failure to follow the warnings and instructions below could

result in injury to the users, attendants and/or bystanders and/or damage to the

wheelchair.

Cables MUST be secured so there are no loops of excess cable extending away from

the wheelchair. Bundle all excess cable together and secure with a tie-wrap. It may

also be necessary to secure these bundles to the frame and/or base.

ALWAYS test all wheelchair functions after securing the cables to be sure cables

DO NOT get pinched or crushed during operation of the wheelchair.

The following checklist must be performed after any procedure that requires:

• Removing/installing the seat

• Removing/installing/adjusting the tilt links

• Replacing electronic components

• Replacing actuators

❑Verify all attaching hardware is tightened securely.

❑Make sure drive lock-out engages when the wheelchair is in any tilt/recline/back angle

combination over 20° relative to the vertical position.

❑Cycle system up and down to verify wiring harnesses DO NOT obstruct the path of

the system. If they do, perform one of the following:

• Wires were damaged during inspection - Replace damaged wires.

• Wires were not damaged during inspection - Cut tie-wraps and relocate wires to a

location where they will not become damaged.

❑Tilt Systems - Verify tilt link is properly secured to the frame.

❑Tilt Systems - Ensure there is no interference with the base frame when the system is

fully tilted.

❑With the wheelchair unoccupied, test all system functions to verify proper operation.

❑Verify charger function.

❑Install all shrouds.

❑Make sure linear guides DO NOT bind.

SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING

2G Tarsys®Powered Seating System 22 Part No 1114842

Troubleshooting

NOTE: Refer to Reference Documents on page 2 for complete mechanical and electrical

troubleshooting guides on the base.

NOTE: Refer to the Electronics Manual listed in Reference Documents on page 2 for additional

troubleshooting information and explanation of error codes.

SYMPTOM PROBABLE CAUSE SOLUTIONS

Wheelchair power ON

but does not drive

System tilted or reclined

beyond drive lock-out

angle (20°).

Return to neutral position (upright). Refer to Operating

Powered Seating Systems on page 127.

Seating system not

functioning or working

intermittently.

Low batteries.

Faulty electrical

connection.

Seat has been driven

under a heavy load for an

extended period of time.

Charge batteries.

Check all connections.

Allow time for the electronics to cool down (light duty

use).

Tilt and/or recline

functions DO NOT

respond.

Open motor connection

or bad switch.

Possible programming

error.

E06 or E07

potentiometers

calibration error code.

Blown fuse in auxiliary

power connectors on

wiring harness.

Use the MKIV™remote programmer to check the

Current Status menu.

Verify TRCM/TAC programming.

Recalibrate potentiometers. Refer to the MK5 EX

Electronics Service manual that is listed in Reference

Documents on page 2.

Replace fuse, and possibly wiring harness.

Tilt and/or recline

functions DO NOT stop

at the desired position

(excessive “drift”).

NOTE: It is normal to

have some amount of

“drift”. However it

should not be more

than 5°.

Programming error for

tilt/recline limits.

Bad potentiometers or

potentiometers out of

calibration.

Damaged tilt actuator.

Use the MKIV remote programmer to verify correct

TRCM/TAC programming.

Recalibrate potentiometers or replace. Refer to the MK5

EX Electronics Service manual that is listed in Reference

Documents on page 2, Removing/Installing the Tilt

Potentiometer on page 150, or Removing/Installing the

Recline Potentiometer on page 155.

Replace tilt actuator. Refer to Removing/Installing the Tilt

Actuator on page 131.

SECTION 4—SAFETY INSPECTION/TROUBLESHOOTING

Part No 1114842 23 2G Tarsys®Powered Seating System

Error Code:

E28 - MPJ joystick

or

5 flashes - DPJ™ and

SPJ™-80 joysticks

System tilted or reclined

beyond drive lock-out

angle (20°).

Charger is plugged into

wheelchair.

Bad potentiometers or

out of calibration.

Return to neutral position (upright). Refer to Operating

Powered Seating Systems on page 127.

Unplug charger.

Recalibrate potentiometers or replace. Refer to the MK5

EX Electronics Service manual that is listed in Reference

Documents on page 2, Removing/Installing the Tilt

Potentiometer on page 150, or Removing/Installing the

Recline Potentiometer on page 155.

Programmer does not

work or gives

“communication error”.

System tilted or reclined

beyond drive lock-out

angle (20°).

Return to neutral position (upright). Refer to Operating

Powered Seating Systems on page 127.

Switch response

incorrect.

Programming error or

bad switch.

Use the programmer to verify controller programming.

Save the proper standard program to reset switch

functions.

Drive lockout does not

engage.

Programming error.

Bad potentiometers or

out of calibration.

Check drive lockout settings using the programmer.

Recalibrate potentiometers or replace. Refer to the MK5

EX Electronics Service manual that is listed in Reference

Documents on page 2, Removing/Installing the Tilt

Potentiometer on page 150, or Removing/Installing the

Recline Potentiometer on page 155.

Slow motor speeds. Low battery voltage or

programming speed set

too low.

Recharge batteries.

Check seating system controller performance adjustment

settings for actuator speed and acceleration using

programmer.

Motor speed too fast. Programming error. Check seating system controller performance adjustment

settings for speed using programmer.

Seating system functions

respond to switch

commands, but not to

driver control.

Programming error.

Incorrect/malfunctioning

driver control.

Check the performance adjustment menu for the base

and make sure that the tilt/recline adjustment is turned

on in all available drives.

Replace drive control.

Seating system function

will only operate in one

direction.

Bad potentiometers or

out of calibration.

Current Rollback.

Check for physical damage to potentiometers and wiring

and replace if necessary.

Recalibrate potentiometers.

Leave power on, and DO NOT activate seating functions

for at least 3 minutes. Call Invacare Technical Services.

Motor runs then loses

power, then runs again.

Heavy load sensed by

seating system controller.

Leave power on, and DO NOT activate seating functions

for at least 3 minutes. Call Invacare Technical Services.

SYMPTOM PROBABLE CAUSE SOLUTIONS

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 24 Part No 1114842

SECTION 5—INTERFACE

HARDWARE

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Repositioning the Seat

About Repositioning the Seat

The seat position MUST be adjusted under the following conditions:

• The seat depth changes.

• The seating system changes so it has both a ventilator-ready battery tray and center

mount footrests.

The mounting location of the seat depends on the seat depth of the seating system and

whether or not both a ventilator-ready battery tray and center mount footrests are

installed. The ventilator battery tray requires a long battery box door. When used in

combination with center mount riggings, the seating system MUST be positioned further

forward for proper clearance.

Repositioning the Seat on 2GR Systems

NOTE: For this procedure, refer to Table 1 - Table 7 on page 26 to page 32.

1. Refer to the tables at the end of this procedure to determine if a seat position

adjustment is needed.

NOTE: The seat adjustment tables are based on the seat depth of the system. Some seat depths share

the same mounting position.

2. Remove the six hex screws, washers and locknuts securing the rear pivot assembly,

spacer bars and seat brackets to the lower interface brackets.

3. Remove the two hex screws and locknuts securing the insides of the seat brackets to

the lower interface brackets.

4. If necessary, remove the four hex screws and locknuts securing the front pivot

assembly to the seat brackets and lower interface brackets.

SECTION 5—INTERFACE HARDWARE

Part No 1114842 25 2G Tarsys®Powered Seating System

NOTE: Not all mounting positions require the front pivot assembly to be secured to the lower

interface brackets. Some mounting positions require that the front pivot assembly be secured to the

seat brackets only. The hex screws securing the front pivot assembly to the seat brackets DO NOT

need to be removed.

5. Adjust the position of the seating system on the lower interface brackets.

6. Using the two hex screws and locknuts removed in STEP 3, secure the insides of the

seat brackets to the lower interface brackets. Torque to 13 ft-lbs ± 20%.

7. Using the hex screws and locknuts removed in STEP 4, secure the front pivot assembly

to the front of the seat brackets and the front of the seat brackets to the lower interface

brackets. Torque to 13 ft-lbs ± 20%.

NOTE: Not all mounting positions require the front pivot assembly to be secured to the lower

interface brackets. Some mounting positions require that the front pivot assembly be secured to the

seat brackets only.

8. Using the six hex screws, washers and locknuts removed in STEP 2, secure the rear

pivot assembly and the spacer bars to the seat brackets and lower interface brackets.

Torque to 75 in-lbs ± 20%.

9. Perform the post-service inspection checklist. Refer to Post-Service Inspection

Checklist on page 21.

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 26 Part No 1114842

TABLE 1 - 2GR Systems WITHOUT Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

16-INCH

17-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screws

Rear Pivot

Assembly

Spacer Bar

Seat Bracket

Lower Interface

Bracket

Washer

Locknut

DO NOT Remove -

Exploded for Clarity

Locknuts

Hex Screws

Front Pivot

Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 27 2G Tarsys®Powered Seating System

TABLE 2 - 2GR Systems WITHOUT Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

18-INCH

19-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Rear Pivot

Assembly

Spacer Bar

Seat Bracket

Lower Interface

Bracket

Washer

Locknut

DO NOT Remove -

Exploded for Clarity

Locknuts

Hex Screws

Front Pivot

Assembly

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 28 Part No 1114842

TABLE 3 - 2GR Systems WITHOUT Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

20-INCH

21-INCH

22-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Rear Pivot

Assembly

Spacer Bar

Seat Bracket

Lower Interface

Bracket

Washer

Locknut

DO NOT Remove -

Exploded for Clarity

Locknuts

Hex Screws

Front Pivot

Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 29 2G Tarsys®Powered Seating System

TABLE 4 - 2GR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

16-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Rear Pivot

Assembly

Spacer Bar

Seat Bracket

Lower Interface

Bracket

Washer

Locknut

DO NOT Remove -

Exploded for Clarity

Locknuts

Hex Screws

Front Pivot Assembly

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 30 Part No 1114842

TABLE 5 - 2GR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

17-INCH

18-INCH

19-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Rear Pivot

Assembly

Spacer Bar

Seat Bracket

Lower Interface

Bracket

Washer

Locknut

DO NOT Remove -

Exploded for Clarity

Locknuts

Hex Screws

Front Pivot Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 31 2G Tarsys®Powered Seating System

TABLE 6 - 2GR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

20-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Rear Pivot

Assembly

Spacer Bar

Seat Bracket

Lower Interface

Bracket

Washer

Locknut

DO NOT Remove -

Exploded for Clarity

Locknuts

Hex Screws

Front Pivot

Assembly

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 32 Part No 1114842

TABLE 7 - 2GR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

21-INCH

22-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Rear Pivot

Assembly

Spacer Bar

Seat Bracket

Lower Interface

Bracket

Washer

Locknut

DO NOT Remove -

Exploded for Clarity

Locknuts

Hex Screws

Front Pivot

Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 33 2G Tarsys®Powered Seating System

Repositioning the Seat for 2GT and 2GTR Systems

NOTE: For this procedure, refer to FIGURE 5.1 on page 34 and Table 8 - Table 14 on page 35 to

page 41.

1. Refer to the tables at the end of this procedure to determine if a seat position

adjustment is needed.

NOTE: The seat adjustment tables are based on the seat depth of the system. Some seat depths share

the same mounting position.

2. Note the appropriate mounting holes to use to secure the seating system to the lower

interface brackets.

3. Remove the locknut and shoulder bolt to disconnect the front of the tilt actuator from

the front pivot assembly.

4. Remove the two hex screws and locknuts securing the insides of the seat brackets to

the lower interface brackets.

5. If necessary, remove the four hex screws and locknuts securing the front pivot

assembly to the seat brackets and lower interface brackets.

NOTE: Not all mounting positions require the front pivot assembly to be secured to the lower

interface brackets. Some mounting positions require that the front pivot assembly be secured to the

seat brackets only. The hex screws securing the front pivot assembly to the seat brackets DO NOT

need to be removed.

6. Remove the four socket screws, washers and locknuts securing the linear guides, rear

pivot assembly, shims* and seat brackets to the lower interface brackets.

NOTE: To remove the hardware securing the linear guides, it is necessary to slide the rear pivot

assembly back and forth. Use the access holes to remove the socket screws from mounting holes in

the lower portion of the linear guides (FIGURE 5.1).

*NOTE: Shims are not present on seating systems manufactured after 12/18/2005.

7. Adjust the position of the seating system on the lower interface brackets.

8. Using the two hex screws and locknuts removed in STEP 4, secure the insides of the

seat brackets to the lower interface brackets. Torque to 13 ft-lbs ± 20%.

9. Using the four hex screws and locknuts removed in STEP 5, secure the front pivot

assembly to the front of the seat brackets and the front of the seat brackets to the lower

interface brackets. Torque to 13 ft-lbs ± 20%.

NOTE: Not all mounting positions require the front pivot assembly to be secured to the lower

interface brackets. Some mounting positions require that the front pivot assembly be secured to the

seat brackets only.

10. Using the four socket screws, washers and locknuts removed in STEP 6, secure the

linear guides, rear pivot assembly and shims* to the seat brackets and lower interface

brackets. Hand tighten.

NOTE: To secure the linear guides, it is necessary to slide the rear pivot assembly back and forth.

Use the access holes to install the socket screws through mounting holes in the lower portion of the

linear guides (FIGURE 5.1).

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 34 Part No 1114842

*NOTE: Shims are not present on seating systems manufactured after 12/18/2005.

CAUTION

The linear guides MUST be parallel and the rear pivot assembly MUST move freely

on the linear guides. Otherwise, damage to the seating system will occur during

operation.

11. Adjust the linear guides until they are parallel.

12. Slide the rear pivot assembly forward and back to see if it slides freely on the linear

guides.

13. Perform one of the following:

• Rear Pivot Assembly Slides Freely - Proceed to STEP 14.

• Rear Pivot Assembly Is Hard To Move - Repeat STEP 11 and STEP 12 until the rear

pivot assembly moves freely.

NOTE: It may be necessary to loosen the screws installed in STEP 10 to adjust the linear guides.

14. Torque the socket screws to 75 in-lbs ± 20%.

15. Install the shoulder bolt and locknut to secure the front of the tilt actuator to the front

pivot assembly. Torque to 23 ft-lbs ± 20%.

16. Perform the post-service inspection checklist. Refer to Post-Service Inspection

Checklist on page 21.

FIGURE 5.1 Repositioning the Seat for 2GT and 2GTR Systems - Securing the Linear Guides

Lower Portion of Linear Guide

Rear Pivot Assembly

Socket Screw

Access Hole

Mounting Hole

SECTION 5—INTERFACE HARDWARE

Part No 1114842 35 2G Tarsys®Powered Seating System

TABLE 8 - 2GT and 2GTR Systems WITHOUT Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

16-INCH

17-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Locknut

Locknuts

(STEP 9)

Hex Screws

Seat Bracket

Lower Interface

Bracket

Front Pivot

Assembly

Shoulder Bolt and Locknut

Tilt Actuator

Socket Screw

Linear Guide*

*NOTE: Linear guides are exploded for clarity. DO NOT disconnect the upper

and lower portions of the linear guides. The linear guide cannot be reassembled.

Shim

Locknuts

Washers

Rear Pivot Assembly

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 36 Part No 1114842

TABLE 9 - 2GT and 2GTR Systems WITHOUT Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

18-INCH

19-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Locknut

Locknuts

(STEP 9)

Hex Screws

Seat Bracket

Lower Interface

Bracket

Front Pivot

Assembly

Shoulder Bolt

and Locknut

Tilt Actuator

Socket Screw

Linear Guide*

*NOTE: Linear guides are exploded for clarity. DO NOT disconnect the upper

and lower portions of the linear guides. The linear guide cannot be reassembled.

Shim

Locknuts

Washer

Rear Pivot Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 37 2G Tarsys®Powered Seating System

TABLE 10 - 2GT and 2GTR Systems WITHOUT Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

20-INCH

21-INCH

22-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Locknut

Locknuts

(STEP 9)

Hex Screws

Seat Bracket

Lower Interface

Bracket

Front Pivot

Assembly

Shoulder Bolt

and Locknut

Tilt Actuator

Socket Screw

Linear Guide*

*NOTE: Linear guides are exploded for clarity. DO NOT disconnect the upper

and lower portions of the linear guides. The linear guide cannot be reassembled.

Shim

Locknuts

Washer

Rear Pivot Assembly

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 38 Part No 1114842

TABLE 11 - 2GT and 2GTR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

16-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Locknut

Locknuts

Hex Screws

Seat Bracket

Lower Interface

Bracket

Front Pivot

Assembly

Shoulder Bolt

and Locknut

Tilt Actuator

Socket Screw

Linear Guide*

*NOTE: Linear guides are exploded for clarity. DO NOT disconnect the upper

and lower portions of the linear guides. The linear guide cannot be reassembled

.

Shim

Locknuts

Washer

Rear Pivot Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 39 2G Tarsys®Powered Seating System

TABLE 12 - 2GT and 2GTR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

17-INCH

18-INCH

19-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Locknut

Locknuts

(STEP 9)

Hex Screws

Seat Bracket

Lower Interface

Bracket

Front Pivot

Assembly

Shoulder Bolt

and Locknut

Tilt Actuator

Socket Screw

Linear Guide*

*NOTE: Linear guides are exploded for clarity. DO NOT disconnect the uppe

r

and lower portions of the linear guides. The linear guide cannot be reassemble

d

Shim

Locknuts

Washers

Rear Pivot Assembly

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 40 Part No 1114842

TABLE 13 - 2GT and 2GTR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

20-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Locknut

Locknuts

(STEP 9)

Hex Screws

Seat Bracket

Lower Interface

Bracket

Front Pivot

Assembly

Shoulder Bolt

and Locknut

Tilt Actuator

Socket Screw

Linear Guide*

*NOTE: Linear guides are exploded for clarity. DO NOT disconnect the upper

and lower portions of the linear guides. The linear guide cannot be reassembled.

Shim

Locknuts

Washer

Rear Pivot Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 41 2G Tarsys®Powered Seating System

Removing/Installing the Rear Pivot Assembly

Tilt Only and Tilt/Recline Systems

NOTE: For this procedure, refer to FIGURE 5.2 on page 43.

Removing

1. Remove the seat assembly. Refer to Removing/Installing the Seat on page 75.

TABLE 14 - 2GT and 2GTR Systems WITH Center Mount Footrests AND

Ventilator-Ready Battery Tray

SEAT

DEPTH

MOUNTING POSITION

21-INCH

22-INCH

NOTE: Torque the hardware as listed below:

• Hex screws or socket screws (securing the rear pivot): 75 in-lbs ± 20%.

• Hex screws (securing the front pivot assembly and front of seat bracket) and shoulder

screw (securing the tilt actuator): 13 ft-lbs ± 20%.

Hex Screw

Locknut

Locknuts

(STEP 9)

Hex Screws

Seat Bracket

Lower Interface

Bracket

Front Pivot

Assembly

Shoulder Bolt

and Locknut

Tilt Actuator

Socket Screw

Linear Guide*

*NOTE: Linear guides are exploded for clarity. DO NOT disconnect the upper

and lower portions of the linear guides. The linear guide cannot be reassembled.

Shim

Locknuts

Washer

Rear Pivot Assembly

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 42 Part No 1114842

2. Remove the shoulder bolt, two bushings and locknut securing the rear of the tilt

actuator to the rear pivot assembly.

3. Slide the rear pivot assembly forward.

4. Align the rear access holes with the rear two socket screws securing the rear of the

lower portion of the linear guides to the seat bracket.

NOTE: If necessary, remove the batteries and turn the wheelchair on its side to check the alignment

of the hardware with the access hole.

5. Remove the two socket screws, washers and locknuts securing the rear of the lower

portion of the linear guides to the seat bracket.

6. Slide the rear pivot assembly backward.

7. Align the rear access holes with the rear two socket screws securing the upper portion

of the linear guides and clamp bars to the rear pivot assembly.

8. Remove the two socket screws securing the upper portion of the linear guides and

clamp bars to the rear pivot assembly.

9. Slide the rear pivot assembly forward.

10. Align the access holes revealed after performing STEP 6 with the front two socket

screws securing the upper portion of the linear guides and clamp bars to the rear pivot

assembly.

11. Repeat STEPS 9 and 10 for the remaining two socket screws securing the upper

portion of the linear guides and clamp bars to the rear pivot assembly.

12. Remove the clamp bars and rear pivot assembly from the wheelchair.

Installing

1. Reverse STEP 7 to STEP 12 in Removing to install the rear pivot onto the linear guides.

Torque socket screws to 75 in-lbs + 20%.

2. Reverse STEP 3 to STEP 6 in Removing to install the linear guides onto the seat

bracket. Hand tighten the two socket screws securing the linear guides to the seat

brackets.

CAUTION

The linear guides MUST be parallel and the rear pivot assembly MUST move freely

on the linear guides. Otherwise, damage to the seating system will occur during

operation.

3. Adjust the linear guides until they are parallel.

4. Slide the rear pivot assembly forward and back to see if it slides freely on the linear

guides.

5. Perform one of the following:

• Rear Pivot Assembly Slides Freely - Proceed to STEP 6.

SECTION 5—INTERFACE HARDWARE

Part No 1114842 43 2G Tarsys®Powered Seating System

• Rear Pivot Assembly Is Hard To Move - Repeat STEP 3 and STEP 4 until the rear

pivot assembly moves freely.

NOTE: It may be necessary to loosen the socket screws to adjust the linear guides.

6. Torque the socket screws to 75 in-lbs ± 20%.

7. Secure the rear of the tilt actuator to the rear pivot assembly using the shoulder bolt,

two bushings and the locknut. Torque to 23 ft-lbs ± 20%.

8. Install the seat assembly. Refer to Removing/Installing the Seat on page 75.

FIGURE 5.2 Removing/Installing the Rear Pivot Assembly - Tilt Only and Tilt/Recline Systems

Locknut

NOTE: Front of tilt actuator shown disassembled

for clarity only. There is no need to remove the

hardware securing the front of the tilt actuator for

this procedure.

Bushings Tilt Actuator

Shoulder Bolt

Clamp Bar

Rear Pivot Assembly

Upper Portion of

Linear Guide

Lower Portion of

Linear Guide

Socket Screw

Access Hole

Seat Bracket

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 44 Part No 1114842

Recline Only Systems

NOTE: For this procedure, refer to FIGURE 5.3.

Removing

1. Remove the seat assembly. Refer to Removing/Installing the Seat on page 75.

2. Note the mounting location of the six hex screws, washers and locknuts securing the

rear pivot assembly to the spacer bars, seat brackets and lower interface brackets.

3. Remove the six hex screws, washers and locknuts securing the rear pivot assembly to

the spacer bars, seat brackets and lower interface brackets.

4. Remove the rear pivot assembly from the wheelchair.

Installing

1. Align the rear pivot assembly, spacer bars, seat brackets and lower interface brackets.

2. Using the six hex screws, washers and locknuts, secure the rear pivot assembly to the

spacer bars, seat brackets and lower interface brackets in the locations noted in STEP

2 of Removing on page 44. Torque to 75 in-lbs ± 20%.

3. Install the seat assembly. Refer to Removing/Installing the Seat on page 75.

FIGURE 5.3 Removing/Installing the Rear Pivot Assembly

NOTE: Only one seat

adjustment position shown.

All seat adjustment positions

remove/install in the same

way.

Locknuts

Lower Interface Bracket

Washer

Seat

Bracket

Spacer Bar

Rear Pivot Assembly

Hex Screw

SECTION 5—INTERFACE HARDWARE

Part No 1114842 45 2G Tarsys®Powered Seating System

Removing/Installing the Front Pivot Assembly

NOTE: For this procedure, refer to FIGURE 5.4 on page 46.

Removing

1. Remove the seat assembly. Refer to Removing/Installing the Seat on page 75.

2. Tilt Only and Tilt/Recline Systems - Remove the shoulder bolt and locknut securing

the front of the tilt actuator to the front pivot assembly.

3. Note the mounting location of the four hex screws and locknuts securing the front

pivot assembly to the seat brackets.

4. Remove the four hex screws and locknut securing the front pivot assembly to the seat

brackets.

5. Remove the front pivot assembly from the seat brackets.

Installing

1. Align the front pivot assembly with the seat brackets.

2. Secure the front pivot assembly to the seat brackets in the location noted in STEP 3 of

Removing on page 45. Torque to 13 ft-lbs ± 20%.

3. Tilt Only and Tilt/Recline Systems - Secure the front of the tilt actuator to the front

pivot assembly using the shoulder bolt and the locknut. Torque to 23 ft-lbs ± 20%.

4. Install the seat assembly. Refer to Removing/Installing the Seat on page 75.

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 46 Part No 1114842

FIGURE 5.4 Removing/Installing the Front Pivot Assembly

Removing/Installing the Linear Guides

NOTE: For this procedure, refer to FIGURE 5.5 on page 48.

NOTE: This procedure applies to Tilt Only and Tilt/Recline Systems Only.

Removing

1. Remove the seat assembly from the rear pivot assembly. Refer to Removing/Installing

the Seat on page 75.

2. Remove the shoulder bolt, two bushings and locknut securing the rear of the tilt

actuator to the rear pivot assembly.

3. Slide the rear pivot assembly forward.

4. Align the rear access holes with the rear two socket screws securing the rear of the

lower portion of the linear guides to the seat bracket.

NOTE: If necessary, remove the batteries and turn the wheelchair on its side to check the alignment

of the hardware with the access hole.

5. Remove the two socket screws, washers and locknuts securing the rear of the lower

portion of the linear guides to the seat bracket.

6. Slide the rear pivot assembly backward.

Locknuts

Tilt Actuator* Shoulder Bolt*

Front Pivot Assembly

Seat

Bracket

*NOTE: These

items are on tilt

systems only.

Hex Screws

Locknut*

SECTION 5—INTERFACE HARDWARE

Part No 1114842 47 2G Tarsys®Powered Seating System

7. Remove the two socket screws, washers and locknuts securing the front of the lower

portion of the linear guides to the seat bracket.

8. Slide the rear pivot assembly backward.

9. Align the rear access holes with the rear two socket screws securing the upper portion

of the linear guides and clamp bars to the rear pivot assembly.

10. Remove the two socket screws securing the upper portion of the linear guides and

clamp bars to the rear pivot assembly.

11. Slide the rear pivot assembly forward.

12. Align the access holes revealed after performing STEP 6 with the front two socket

screws securing the upper portion of the linear guides and clamp bars to the rear pivot

assembly.

13. Repeat STEP 10 and STEP 11 for the remaining two socket screws securing the upper

portion of the linear guides and clamp bars to the rear pivot assembly.

NOTE: Retain the clamp bars for reinstallation.

Installing

1. Reverse STEP 8 to STEP 13 in Removing to install the rear pivot onto the linear guides.

Torque socket screws to 75 in-lbs ± 20%.

2. Reverse STEP 3 to STEP 7 in Removing to install the linear guides onto the seat

bracket. Hand tighten the two socket screws securing the linear guides to the seat

brackets.

CAUTION

The linear guides MUST be parallel and the rear pivot assembly MUST move freely

on the linear guides. Otherwise, damage to the seating system will occur during

operation.

3. Adjust the linear guides until they are parallel.

4. Slide the rear pivot assembly forward and back to see if it slides freely on the linear

guides.

5. Perform one of the following:

• Rear Pivot Assembly Slides Freely - Proceed to STEP 6.

• Rear Pivot Assembly Is Hard To Move - Repeat STEP 3 and STEP 4 until the rear

pivot assembly moves freely.

NOTE: It may be necessary to loosen the socket screws to adjust the linear guides.

6. Torque the socket screws to 75 in-lbs ± 20%.

7. Secure the rear of the tilt actuator to the rear pivot assembly using the shoulder bolt,

two bushings and the locknut. Torque to 23 ft-lbs ± 20%.

8. Install the seat assembly. Refer to Removing/Installing the Seat on page 75.

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 48 Part No 1114842

FIGURE 5.5 Removing/Installing the Linear Guides

Removing/Installing the Seat Brackets

Tilt Only and Tilt/Recline Systems

NOTE: For this procedure, refer to FIGURE 5.6 on page 50.

Removing

1. Remove the seat assembly from the rear pivot assembly. Refer to Removing/Installing

the Seat on page 75.

2. Note the mounting location of the four hex screws and locknuts securing the front

pivot assembly to the seat brackets.

Locknut

NOTE: Front of tilt actuator

shown disassembled for clarity

only. There is no need to remove

the hardware securing the front of

the tilt actuator for this procedure.

Bushings Tilt Actuator

Shoulder Bolt

Clamp Bar

Rear Pivot Assembly

Upper Portion of

Linear Guide

Lower Portion of

Linear Guide

Socket Screw

Seat Bracket

Lower Interface Bracket

Shim

Washer

Locknut

Access Hole

SECTION 5—INTERFACE HARDWARE

Part No 1114842 49 2G Tarsys®Powered Seating System

3. Remove the four hex screws and locknuts securing the front pivot assembly to the seat

brackets.

4. Remove the front pivot assembly from the seat brackets.

5. Note the mounting location of the hex screw and locknut securing the inside of the

seat bracket to the lower interface bracket.

6. Remove the hex screw and locknut securing the inside of the seat bracket to the lower

interface bracket.

7. Slide the rear pivot assembly forward.

8. Note the mounting location of the two socket screws, washers and locknuts securing

the lower portion of the linear guide to the shim*, seat bracket and lower interface

bracket.

*NOTE: Shims are not present on seating systems manufactured after 12/18/2005.

9. Align the rear access holes with the rear two socket screws securing the rear of the

lower portion of the linear guides to the seat bracket.

NOTE: If necessary, remove the batteries and turn the wheelchair on its side to check the alignment

of the hardware with the access hole.

10. Remove the two socket screws, washers and locknuts securing the rear of the lower

portion of the linear guides to the seat bracket.

11. Slide the rear pivot assembly backward.

12. Remove the two socket screws, washers and locknuts securing the front of the lower

portion of the linear guides to the seat bracket.

13. Remove the seat bracket from the lower interface bracket.

14. Repeat STEP 8 to STEP 13 for the opposite side if desired.

Installing

1. Using the hex screws and locknuts, secure the insides of the seat brackets to the lower

interface brackets in the location noted in STEP 5 of Removing. Torque to 13 ft-lbs ±

20%.

2. Reverse STEP 7 to STEP 12 in Removing to install the linear guides onto the seat

bracket. Hand tighten the two socket screws securing the linear guides to the seat

brackets.

CAUTION

The linear guides MUST be parallel and the rear pivot assembly MUST move freely

on the linear guides. Otherwise, damage to the seating system will occur during

operation.

3. Adjust the linear guides until they are parallel.

4. Slide the rear pivot assembly forward and back to see if it slides freely on the linear

guides.

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 50 Part No 1114842

5. Perform one of the following:

• If the rear pivot assembly slide freely, proceed to STEP 6.

• If the rear pivot assembly is hard to move, repeat STEP 3 and STEP 4 until the rear

pivot assembly moves freely.

NOTE: It may be necessary to loosen the socket screws to adjust the linear guides.

6. Torque the socket screws to 75 in-lbs ± 20%.

7. Align the front pivot assembly with the seat brackets.

8. Secure the front pivot assembly to the seat brackets in the location noted in STEP 1 of

Removing. Torque to 13 ft-lbs ± 20%.

9. Secure the front of the tilt actuator to the front pivot assembly using the shoulder

screw and locknut. Torque to 23 ft-lbs ± 20%.

10. Install the seat assembly. Refer to Removing/Installing the Seat on page 75.

FIGURE 5.6 Removing/Installing the Seat Brackets - Tilt Only and Tilt/Recline Systems

Locknuts

Tilt Actuator

Socket

Screw

Lower Portion of

Linear Guide

Socket Screw

Locknut

Washer

Hex Screws

Rear Pivot

Assembly

Seat Bracket

Shim

Lower

Interface

Bracket

SECTION 5—INTERFACE HARDWARE

Part No 1114842 51 2G Tarsys®Powered Seating System

Recline Only Systems

NOTE: For this procedure, refer to FIGURE 5.7 on page 52.

Removing

1. Remove the seat assembly from the rear pivot assembly. Refer to Removing/Installing

the Seat on page 75.

2. Note the mounting location of the four hex screws and locknuts securing the front

pivot assembly to the seat brackets.

3. Remove the four hex screws and locknuts securing the front pivot assembly to the seat

brackets.

4. Remove the front pivot assembly from the seat brackets.

5. Note the mounting location of the six socket screws, washers and locknuts securing

the rear pivot assembly to the spacer bars, seat brackets and lower interface brackets.

6. Remove the six socket screws, washers and locknuts securing the rear pivot assembly

to the spacer bars, seat brackets and lower interface brackets.

7. Remove the rear pivot assembly from the wheelchair.

8. Note the mounting location of the hex screw and locknut securing the inside of the

seat bracket to the lower interface bracket.

9. Remove the hex screw and locknut securing the inside of the seat bracket to the lower

interface bracket.

10. Remove the seat bracket from the lower interface bracket.

11. Repeat STEP 8 to STEP 10 for the opposite side if desired.

Installing

1. Using the hex screw and locknut, secure the inside of the seat bracket to the lower

interface bracket in the location noted in STEP 8 of Removing. Torque to 13 ft-lbs ±

20%.

2. Repeat STEP 1 for the opposite side if necessary.

3. Align the front pivot assembly with the seat brackets.

4. Secure the front pivot assembly to the seat brackets in the location noted in STEP 2 of

Removing above. Torque to 13 ft-lbs ± 20%.

5. Using the six hex screws, washers and locknuts, secure the rear pivot assembly to the

spacer bars, seat brackets and lower interface brackets in the location noted in STEP 5

of removing above. Torque to 75 in-lbs ± 20%.

6. Install the seat assembly. Refer to Removing/Installing the Seat on page 75.

SECTION 5—INTERFACE HARDWARE

2G Tarsys®Powered Seating System 52 Part No 1114842

FIGURE 5.7 Removing/Installing the Seat Brackets - Recline Only Systems

Removing/Installing the Lower Interface Brackets

NOTE: For this procedure, refer to FIGURE 5.8 on page 53.

Removing

1. Remove the seat assembly from the rear pivot assembly. Refer to Removing/Installing

the Seat on page 75.

2. Remove both seat brackets. Refer to Removing/Installing the Seat Brackets on page 48.

3. Remove the six button screws, washers and locknuts securing the lower interface

brackets to the battery box.

Installing

1. Secure the lower interface brackets to the battery box using the six button screws,

washers and locknuts. Torque to 13 ft-lbs ± 20%.

2. Install both seat brackets. Refer to Removing/Installing the Seat Brackets on page 48.

3. Install the seat assembly onto the rear pivot assembly. Refer to Removing/Installing

the Seat on page 75.

Locknuts

Lower Interface Bracket

Washer

Seat Bracket

Spacer

Bar

Rear Pivot

Assembly

Hex

Screw

Locknuts

Hex Screws

Front Pivot

Assembly

SECTION 5—INTERFACE HARDWARE

Part No 1114842 53 2G Tarsys®Powered Seating System

FIGURE 5.8 Removing/Installing the Lower Interface Brackets

Locknuts

Locknuts

Washers

Washer

Washers

Washer

Lower

Interface

Brackets

Battery Box Button Screws

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 54 Part No 1114842

SECTION 6—SEAT ADJUSTMENTS

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Replacing Seat Positioning Strap

NOTE: For this procedure, refer to

FIGURE 6.1.

1. Remove the two hex bolts, washers and

locknuts that secure the two halves of

the seat positioning strap to the seat

frame.

2. Remove the existing seat positioning

strap from the seat frame.

3. Position the new seat positioning strap

on the seat frame as shown.

4. Reinstall the hex bolt, washer and

locknut as shown. Tighten securely.

FIGURE 6.1 Replacing Seat Positioning

Strap

Removing/Installing Seat Pan

NOTE: For this procedure, refer to FIGURE 6.2 on page 55.

Removing

1. Remove the seat cushion from the seat pan.

2. Remove the five hex bolts, locknuts, coved washer and spacers that secure the seat pan

to the seat frame.

Installing

1. Position the new/existing seat pan on the seat frame, aligning the mounting holes of

the seat pan and the mounting holes of the seat frame.

Seat

Positioning

Strap

Strap

Mounts

Here

Locknut

Spacer

Hex

Bolt

Seat Frame

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 55 2G Tarsys®Powered Seating System

2. Reinstall the five hex bolts, locknuts, coved washer and spacers that secure the seat

pan to the seat frame. Torque to 75 in-lbs ± 20%.

3. Remove the protective strips from the new seat pan and reinstall the seat cushion onto

the seat pan.

FIGURE 6.2 Removing/Installing Seat Pan

Adjusting Seat Width

Preparing to Adjust Seat Width

NOTE: Reverse these steps after adjusting seat width and before returning the wheelchair to the user.

1. Tilt backward 5 to 10 degrees and/or recline backward 5 to 10 degrees in order to

enable hardware removal.

2. Remove the telescoping front rigging supports. Refer to Adjusting/Replacing

Telescoping Front Rigging Supports on page 73.

3. Remove the joystick(s). Refer to Removing/Installing Joystick(s) on page 149.

4. Remove the arms. Refer to Arms on page 114.

5. Remove the existing spreader bar. Refer to Removing/Installing Spreader Bar on page 87.

6. Remove the existing back pan. Refer to Removing/Installing Back Pan on page 85.

7. Remove the side shrouds. Refer to Removing/Installing Side Shrouds on page 100.

8. Remove the existing seat pan. Refer to Removing/Installing Seat Pan on page 54.

Hex

Bolts

Seat Pan

Coved

Washer

Seat Frame

Spacers

Locknut

Locknut

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 56 Part No 1114842

Tilt-Only Seating Systems

NOTE: For this procedure, refer to FIGURE 6.3.

1. Remove the four hex bolts, coved washers, spacers and locknuts that secure the side

frames to the center seat frame.

 WARNING

Both side frames MUST be adjusted to the same mounting hole position to

maintain an even weight distribution of user and seat frame over the base frame. If

weight is not distributed evenly, injury to the assistant and/or user and damage to

the wheelchair may occur.

2. Slide the side frames in and/or out to the desired seat width. Make sure both side

frames are at the same seat width. Refer to Detail “A” in FIGURE 6.3.

3. Reinstall the four hex bolts, coved washers, spacers and locknuts that secure the side

frames to the center seat frame. Torque to 75 in-lbs ± 20%.

4. Reassemble the wheelchair by reversing the instructions in Preparing to Adjust Seat

Width on page 55.

FIGURE 6.3 Adjusting Seat Width - Tilt-Only Seating Systems

16 17 18 19 20 22

21

Spacer

Coved Washer Hex

Bolts

Side Frame

Locknut

Center Seat Frame

DETAIL “A”

Seat Width Mounting

Hole Positions

NOTE: One side frame shown

for clarity. Opposite side frame

has the same mounting hole

pattern.

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 57 2G Tarsys®Powered Seating System

Recline Only or Tilt/Recline Seating Systems

CAUTION

If the crossbeam has to be changed for the desired seat width, the wheelchair MUST

be returned to Invacare. Otherwise, damage to the recline function may occur.

NOTE: For this procedure, refer to FIGURE 6.4 on page 58.

1. Measure across the side frames to determine the current seat width.

2. Determine the desired seat width.

3. Refer to the following chart and determine if the existing crossbeam needs to be

replaced.

• Example #1: If the current seat width is 16 inches and desired seat width is 18

inches, a new crossbeam of 18–19-inches is required.

• Example #2: If the current seat width is 20 inches and the desired seat width is 21

inches, a new crossbeam is NOT required.

4. Perform one of the following:

• New Crossbeam Required - Return seating system to Invacare for adjustment.

• New Crossbeam NOT Required - Proceed to STEP 5.

5. Remove the four hex bolts, coved washers, spacers and locknuts that secure the side

frames to the center seat frame.

6. Loosen the two socket bolts, washers and locknuts that secure the two connector

brackets to the crossbeam.

7. Slide the side frames to the desired seat width. Make sure both side frames are at the

same seat width. Refer to Detail “A” of FIGURE 6.4.

8. Tighten the two socket bolts, washers and locknuts that secure the two connector

brackets to the crossbeam.

9. Reinstall the four hex bolts, coved washers, spacers and locknuts that secure the side

frames to the center seat frame. Torque to 75 in-lbs ± 20%.

10. Reassemble the wheelchair by reversing the instructions in Preparing to Adjust Seat

Width on page 55.

SEAT WIDTH CROSSBEAM REQUIRED

16 or 17 inches 16-17-inch

18 or 19 inches 18-19-inch

20 or 21 inches 20-21-inch

22 inches 22-inch

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 58 Part No 1114842

FIGURE 6.4 Adjusting Seat Width - Recline Only or Tilt/Recline Seating Systems

Adjusting Seat Depth

CAUTION

Read and understand About Seat Depth BEFORE changing the seat depth.

Otherwise, damage to the seating system may occur.

About Seat Depth

Seat depths range from 16 to 22 inches in one inch increments.

NOTE: Seat depths are a combination of side frames, center seat frames, seat pans, leg support

tubes (if equipped) and telescoping front rigging supports.

16 17 18 19 20 22

21

Hex Bolt

Coved

Washer

Locknuts

Spacers

Hex Bolts

Coved

Washer

Hex Bolt

Coved

Washer

Locknuts Spacer

Spacer

Locknut

Side Frame

Center Seat

Frame Crossbeam

Socket Bolt

Socket

Bolt

DETAIL “A”

Available Seat Width Adjustments

Seat Width Mounting Hole Positions

Connector Bracket

NOTE: Any other seat

width adjustment

requires a new

crossbeam, and the

wheelchair MUST be

returned to Invacare.

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 59 2G Tarsys®Powered Seating System

CAUTION

Seating systems with recline MUST be returned to Invacare if the center frame has

to be changed for a particular seat depth. Otherwise, damage to the recline function

could occur.

Side Frames

Side frames are available in four depths: 16, 18, 20 or 22 inches.

The seat depth of the wheelchair can be adjusted up to two inches from the original depth

without changing the side frames. The two additional seat depths per side frame are

available by replacing the seat pan and adjusting (replacing) the leg support tubes (if

equipped) and telescoping front rigging supports.

EXAMPLE:

Center Seat Frames

CAUTION

Seating systems with recline MUST be returned to Invacare if the center frame has

to be changed for a particular seat depth. Otherwise, damage to the recline function

could occur.

There are two center seat frame sizes:

Small - used for 16 and 18-inch deep side frames

Large - used for 20 and 22-inch deep side frames

NOTE: If changing from a 16 or 18-inch deep side frame to a 20 or 22-inch deep side frame (or vice

versa), the center seat frame must be changed.

Leg Support Tubes

For seating systems with mechanical legrests, the leg support tubes are available in two

sizes:

Short - adjusts from 16 to 19-inch seat depths

Long - adjusts from 20 to 22-inch seat depths

NOTE: If changing from any seat depth between and including 16 and 19 inches to any seat depth

between and including 20 and 22 inches (or vice versa), the leg support tube must be changed.

SIDE FRAME AVAILABLE SEAT DEPTHS

16-inch 16, 17 or 18-inch

18-inch 18, 19 or 20-inch

20-inch 20, 21 or 22-inch

22-inch 22-inch

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 60 Part No 1114842

Adjusting Seat Depth

 WARNING

To ensure stability, the seat may need repositioning when the seat depth is changed.

Refer to Repositioning the Seat on page 24. Otherwise, injury or damage may

occur.

CAUTION

Seat depth adjustments that require a new center seat frame on Tilt-Only seating

systems are permissible. Seat depth adjustments that require a new center seat

frame on Tilt/Recline or Recline-Only seating systems are NOT permissible, and the

system MUST be returned to Invacare for service. Otherwise, damage to the

recline function may occur.

1. Refer to the following chart to determine the components that are required for a

particular seat depth.

*NOTE: Seating systems with mechanical legrests only.

2. To replace an applicable component, refer to the following list of procedures:

3. It may be necessary to reposition the seat. Refer to Repositioning the Seat on page 24

and to determine if this adjustment is necessary.

SEAT DEPTH (INCHES)

COMPONENT 16 17 18 19

20

OPTION 1

20

OPTION 2 21 22

Side Frame

(inches) 16 16 16 or 18 18 18 20 20 20 or 22

Center Seat Frame Small Small Small Small Small Small Large Large

Seat Pan

(inches) 16 17 18 19 20 20 21 22

*Leg Support Tube Short Short Short Short Short Long Long Long

COMPONENT PROCEDURE

Side Frame Removing/Installing Side Frames on page 66

Center Seat Frame Removing/Installing Center Seat Frame on page 70

Seat Pan Removing/Installing Seat Pan on page 54

Leg Support Tube Adjusting Leg Support Tubes on page 73

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 61 2G Tarsys®Powered Seating System

Adjusting Seat Angle

Tilt-Only and Tilt/Recline Seating Systems

NOTE: For this procedure, refer to FIGURE 6.5 on page 61.

1. To gain access to the mounting hardware, tilt seating system back to 45 degrees.

2. Remove the batteries.

3. Remove the shoulder bolt, spacer and locknut that secure the angle block to the front

pivot assembly.

4. Secure the angle blocks and links to the front pivot assembly with the shoulder bolts,

spacers and locknuts in one of the positions shown in FIGURE 6.5. Securely tighten.

5. Adjust the tilt potentiometer. Refer to the electronics manual listed in Reference

Documents on page 2.

6. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

FIGURE 6.5 Adjusting Seat Angle - Tilt-Only and Tilt/Recline Seating Systems

Recline-Only Seating Systems

Preparing to Adjust the Seat Angle

NOTE: For this procedure, refer to FIGURE 6.6 on page 62.

1. Visually inspect the seating system for either 10°/15° recline links or 0°/5° recline links.

2. Perform one of the following:

Orientation of Angle Block

Shown is for 5° Seat Angle

Locknuts

Spacer

Spacer

Link

Shoulder Bolt

Mounting Hole for 0°

Seat Angle

Use this Mounting

Hole for 0° Seat

Front Pivot Assembly

Orientation of Angle Block

Shown is for 0° Seat Angle

Shoulder Bolt

Link

Mounting Hole

for 5° Recline

Use this Mounting

Hole for 5° Seat

Angle

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 62 Part No 1114842

• Use Existing Hardware to Adjust the Seat Angle Between 10° and 15° or Between

0° and 5° - Refer to Changing Seat Angle from 10° to 15° (or Vice Versa) on page 62

or Changing Seat Angle from 0° to 5° (or Vice Versa) on page 64.

• Change Hardware to Adjust the Seat Angle From 10°/15° to 0°/5° (or Vice Versa) -

Refer to Replacing Recline Links on page 65.

FIGURE 6.6 Recline-Only Seating Systems - Preparing to Adjust the Seat Angle

Changing Seat Angle from 10° to 15° (or Vice Versa)

NOTE: For this procedure, refer to FIGURE 6.7 on page 63.

1. Make sure the wheelchair is on a level surface.

2. Remove the batteries.

3. Remove the seat pan. Refer to Removing/Installing Seat Pan on page 54.

4. Remove the retaining ring and washer that secure the 10°/15° recline link to the pin of

the seat frame. Refer to Detail “A”. Discard the retaining ring.

@

Rear of

Wheelchair

General

Area of

Inspection

Front of

Wheelchair

10°/15° Recline Link 0°/5° Recline Link

Mounting

Hardware

10°/15° Recline

Link

Mounting

Hardware

0°/5° Recline Link

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 63 2G Tarsys®Powered Seating System

5. Remove the shoulder bolt and locknut that secure the 10°/15° recline link to the front

pivot assembly. Refer to Detail “B”.

6. Remove the recline link.

7. Reposition the recline link to the seat frame pin through the other mounting hole.

Refer to Detail “A” in FIGURE 6.7.

8. Secure the 10°/15° recline link to the seat frame pin with the washer and a new

retaining ring.

CAUTION

Be sure to use a new retaining ring that is not bent or damaged.

NOTE: When completed, verify that the retaining ring is fully seated in the groove in the pin.

9. Insert the existing shoulder bolt through the other mounting hole in the front pivot

assembly and then through the pivot hole in the recline link. Refer to Detail “B” in

FIGURE 6.7.

10. Securely tighten the locknut.

11. Repeat STEPS 4–10 for the opposite side.

12. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

FIGURE 6.7 Changing Seat Angle from 10° to 15° (or Vice Versa)

Mounting Hole for

10° Seat Angle

Mounting Hole for

15° Seat Angle

Washer

*Retaining

Ring

*NOTE: Use

new retaining

ring.

DETAIL “A”

NOTE: Drawing shows attachment for 15°

seat angle as an example.

Pin

10° and 15°

Recline Link

Shoulder

Bolt

Front Pivot

Assembly

Locknut

Mounting Hole for

10° Seat Angle

Mounting Hole for

15° Seat Angle

DETAIL “B”

NOTE: Drawing shows attachment

for 15° seat angle as an example.

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 64 Part No 1114842

Changing Seat Angle from 0° to 5° (or Vice Versa)

NOTE: For this procedure, refer to FIGURE 6.8 on page 64.

1. Make sure the wheelchair is on a level surface.

2. Remove the batteries. Refer to Reference Documents on page 2.

3. Remove the seat pan. Refer to Removing/Installing Seat Pan on page 54.

4. Remove the retaining ring and washer that secure the 0°/5° recline link to the pin of the

seat frame. Discard the retaining ring.

5. Remove the shoulder bolt and locknut that secure the 0°/5° recline link to the front

pivot assembly.

6. Remove the recline link.

7. Reposition the recline link to the seat frame pin through the other mounting hole.

Refer to Detail “A” in FIGURE 6.8.

8. Secure the 0°/5° recline link to the seat frame pin with the washer and a new retaining

ring.

CAUTION

Be sure to use a new retaining ring that is not bent or damaged.

NOTE: When completed, verify that the retaining ring is fully seated in the groove in the pin.

9. Insert the existing shoulder bolt through the other mounting hole in the front pivot

assembly and then through the pivot hole in the recline link. Refer to Detail “B” in

FIGURE 6.8.

10. Securely tighten the locknut.

11. Repeat STEPS 4–10 for the opposite side.

12. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

FIGURE 6.8 Changing Seat Angle from 0° to 5° (or Vice Versa)

Mounting Hole

for 5° Recline

*NOTE: Use new retainin

g

rin

g

.

Mounting Hole

for 0° Recline

*Retaining

Ring

Washer Mounting Hole

for 5° Recline

Mounting Hole

for 0° Recline

Front Pivot

Assembly

Locknut

0° and 5°

Recline Link

Shoulder

Bolt

DETAIL “A” DETAIL “B”

NOTE: Drawing shows attachment for

5° recline as an exam

p

le.

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 65 2G Tarsys®Powered Seating System

Replacing Recline Links

NOTE: For this procedure, refer to FIGURE 6.9 on page 66.

1. Make sure the wheelchair is on a level surface.

2. Remove the batteries.

3. Remove the seat pan. Refer to Removing/Installing Seat Pan on page 54.

4. Remove the retaining ring and washer that secure the recline link to the pin of the seat

frame.

5. Remove the shoulder bolt and locknut that secure the recline link to the front pivot

assembly.

6. Remove the existing recline link.

7. Perform one of the following:

• For 15° recline - Secure the 10°/15° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 6.9

(Detail “A”).

• For 10° recline - Secure the 10°/15° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 6.9

(Detail “B”).

• For 5° recline - Secure the 0°/5° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 6.9

(Detail “C”).

• For 0° recline - Secure the 0°/5° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 6.9

(Detail “D”).

CAUTION

Be sure to use a new retaining ring that is not bent or damaged.

NOTE: When completed verify retaining ring is fully seated in the groove in the pin.

8. Secure the recline link to the front pivot assembly with the existing shoulder bolt and

locknut in the mounting hole shown in the respective details of FIGURE 6.9. Securely

tighten.

9. Repeat for opposite side.

10. Install the seat pan. Refer to Removing/Installing Seat Pan on page 54.

11. Install the batteries.

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 66 Part No 1114842

FIGURE 6.9 Replacing Recline Links

Removing/Installing Side Frames

Removing Side Frames

NOTE: For this procedure, refer to FIGURE 6.10 on page 67.

1. Recline backward 5 to 10 degrees and/or tilt backward 5 to 10 degrees in order to

enable hardware removal.

2. Remove the side shrouds. Refer to Removing/Installing Side Shrouds on page 100.

3. Remove the seat pan. Refer to Removing/Installing Seat Pan on page 54.

4. Remove the arms. Refer to Arms on page 114.

5. Remove the back. Refer to Removing/Installing Back Assembly on page 91.

6. Remove the telescoping front rigging supports. Refer to Adjusting/Replacing

Telescoping Front Rigging Supports on page 73.

Mounting Hole

for 10° Recline

Mounting Hole

for 15° Recline

Washer

*Retaining

Ring

*NOTE: Use new retaining ring.

DETAIL A: 10°/15° RECLINE LINK

Mounting Hole

for 10° Recline

Mounting Hole

for 15° Recline

Shoulder

Bolt

Front Pivot

Assembly

Locknut

10° and 15° Recline Link

Mounting Hole for 5° Recline

Mounting Hole

for 0° Recline

Washer

*Retaining

Ring

*NOTE: Use new retaining ring.

DETAIL B: 0°/5° RECLINE LINK

Mounting Hole for 0° Recline

Mounting Hole

for 5° Recline

Shoulder

Bolt

Front Pivot

Assembly

Locknut

0° and 5° Recline Link

Mounting Reclining Link to Center Seat Frame Mounting Reclining Link to Center Seat Frame

Mounting Reclining Link

to Front Pivot Assembly

Mounting Reclining Link

to Front Pivot Assembly

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 67 2G Tarsys®Powered Seating System

7. Observe the mounting position of the existing side frame to the center seat frame for

proper re-installation.

8. Remove two hex bolts, coved washers, spacers and locknuts that secure one side frame

to the center seat frame.

NOTE: For Tilt/Recline and Recline-Only seating systems, remove the socket screw, washer and

locknut that secure the connecting bracket to the crossbeam.

9. Remove the existing side frame from the center seat frame.

10. Perform STEPS 6-8 for the remaining side frame if necessary.

11. If replacing the side frame, refer to either Preparing Side Frames for Replacement on

page 67.

FIGURE 6.10 Removing Side Frames

Preparing Side Frames for Replacement

Tilt-Only Seating Systems

NOTE: For this procedure, refer to FIGURE 6.11 on page 68.

NOTE: The mounting location of the hex screw on the connecting bracket determines the back

angle of the back assembly.

1. Note the mounting position of the hex screw on the connecting plate to obtain the

same back angle when re-assembling. Refer to Detail “A”.

2. Remove the hex screw and washer that secure the slide block to the connecting

bracket.

3. Remove the two hex screws and washers that secure the slide rod to the side frame.

4. Remove the slide rod, slide block and connecting bracket from the existing side frame.

5. Secure the slide block to the connecting bracket with the hex screw, washer, and

locknut.

Hex Bolt

Coved

Washer

Locknuts

Spacers

Hex Bolts

Coved

Washer

Hex Bolt

Coved Washer

Locknut Spacer

Spacer

Locknut

Side Frame

Center Seat

Frame

NOTE: Tilt/Recline seat frame shown.

Crossbeam Socket

Screw*

*NOTE: Only on systems with recline.

Connecting Bracket

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 68 Part No 1114842

6. Secure the slide rod to the side frame, with the slide block in position, with the two

hex screws and washers. Torque to 13 ft-lbs ± 20% (156 in-lbs ± 20%).

FIGURE 6.11 Preparing Side Frames for Replacement - Tilt-Only Seating Systems

Tilt/Recline and Recline-Only Seating Systems

NOTE: For this procedure, refer to FIGURE 6.12 on page 69.

1. Remove the hex screw and washer that secure the slide block to the slide block

connecting bracket.

2. Remove the two hex screws and washers that secure the slide rod to the side frame.

3. Remove the slide rod and slide block from the side frame.

4. Secure the slide rod to the side frame, with the slide block in position, with the two

hex screws and washers. Torque to 13 ft-lbs ± 20% (156 in-lbs ± 20%).

5. Secure the slide block to the slide block connecting bracket with the hex screw and

washer. Torque to 156 in-lbs ± 20%.

Side Frame

Locknut

Connecting

Bracket

Hex Screw

Washer

Slide Rod

Hex Screw

Washer

Washer Hex Screw

DETAIL “A” - INSIDE

VIEW OF CONNECTING

BRACKET ON SIDE

FRAME

NOTE: In Detail “A”, the mounting position of

the hex screw on the connecting bracket shows a

back angle of 115°. For additional back angles

refer to Adjusting Back Angle on page 80.

Mounting Position

Slide Block

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 69 2G Tarsys®Powered Seating System

FIGURE 6.12 Preparing Side Frames for Replacement - Tilt/Recline and Recline-Only Seating

Systems

Installing Side Frames

 WARNING

Both side frames MUST be adjusted to the same mounting hole position to

maintain an even weight distribution of the user and seat frame over the base

frame. If weight is not distributed evenly, injury to the assistant and/or user and

damage to the wheelchair may occur.

NOTE: For this procedure, refer to FIGURE 6.13 on page 70.

1. Recline and/or tilt the seating system 5 to 10 degrees to enable hardware installation.

2. Install the side frame into the center seat frame and slide to the seat width noted in the

removal process.

NOTE: If a new seat width is desired, refer to Adjusting Seat Width on page 55.

NOTE: For Tilt/Recline and Recline-Only seating systems, be sure to align the slide block

connecting bracket with the crossbeam.

3. Make sure both side frames are at the same mounting hole position.

4. Reinstall the four hex bolts, coved washers, spacers and locknuts that secure the side

frames to the center seat frame. Torque to 75 in-lbs ± 20%.

NOTE: For Tilt/Recline and Recline-Only seating systems, secure the connecting bracket to the

crossbeam with the socket screw, spacer and washer. Torque to 156 in-lbs ± 20%.

Hex Screw Washers

Hex Screw

Side Frame

Locknut

Slide Rod

Slide Block

Hex Screw

Washer

Slide Block

Connecting

Bracket

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 70 Part No 1114842

FIGURE 6.13 Installing Side Frames

Removing/Installing Center Seat Frame

 WARNING

Pinch points exist between seat and base frames. Use caution to avoid injury.

CAUTION

For Tilt/Recline and Recline-Only seating systems, the center seat frame assembly is

a non-serviceable part. Whenever a new center seat frame is required (e.g., to

achieve a desired seat width or depth), return the complete wheelchair to Invacare

for service.

NOTE: For this procedure, refer to FIGURE 6.14 on page 72.

NOTE: The following procedure is for Tilt-Only seating systems.

Removing Center Seat Frame

1. Remove the side shrouds. Refer to Removing/Installing Side Shrouds on page 100.

2. Remove the seat pan. Refer to Removing/Installing Seat Pan on page 54.

3. Remove the arms. Refer to Removing Armrests on page 114.

4. Remove the back. Refer to Back Adjustments on page 80.

5. Remove the legrests.Refer to Installing/Removing the Power Elevating Legrests on

page 104.

6. Remove the side frames. Refer to Removing/Installing Side Frames on page 66.

Hex Bolt

Coved

Washer

Locknuts

Spacers

Hex Bolts

Coved Washer

Hex Bolt

Coved Washer

Locknuts

Spacer

Spacer

Locknut

Side Frame

Center Seat

Frame

NOTE: Tilt/Recline seat frame shown.

Crossbeam

Connecting

Bracket

Socket

Screw*

*NOTE: Only on systems with recline.

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 71 2G Tarsys®Powered Seating System

7. Remove the two shoulder bolts and locknuts that secure the existing center seat frame

to the rear pivot assembly. Refer to Detail “A”.

8. Note the mounting position of the two tilt links. Refer to Detail “B”.

 WARNING

Support the center seat frame before removing the shoulder bolt and locknuts that

secure the tilt links to the front pivot assembly. Otherwise, injury or damage could

occur.

9. While supporting the center seat frame, remove the shoulder bolt and locknut that

secure the tilt link to the front pivot assembly. Refer to Detail “B”.

10. Remove the existing center seat frame from the base frame.

11. Remove the retaining ring that secures the tilt link and washers to the existing center

seat frame. Refer to Detail ”C”.

12. Remove the washers and tilt link from the existing center seat frame.

13. If installing a new center seat frame, remove the four washers and one retaining ring

from the front pin on the existing center seat frame and transfer onto the new center

seat frame. Refer to Detail “B”.

14. Repeat STEPS 11-13 for the opposite tilt link.

Installing Center Seat Frame

1. Position the tilt link and washers on the new center seat frame. Refer to FIGURE 6.14

for hardware orientation.

2. Install the retaining ring that secures the tilt link and washers to the new center seat frame.

3. Repeat STEPS 1-2 for the opposite tilt link.

4. Align the mounting holes on the new center seat frame with the mounting holes on

the rear pivot assembly.

5. Secure the new center seat frame to the rear pivot assembly with two shoulder bolts

and locknuts. Torque to 75 in-lbs ± 20%.

6. Position the mounting hole in the tilt link with the mounting hole determined in STEP

8 of Removing Center Seat Frame on page 70.

7. Secure the tilt links to the front pivot assembly with the shoulder bolts and locknuts.

Torque to 75 in-lbs ± 20%.

8. Install the new/existing side frames. Refer to Removing/Installing Side Frames on

page 66.

9. Install the side shroud. Refer to Removing/Installing Side Shrouds on page 100.

10. Install the seat pan. Refer to Removing/Installing Seat Pan on page 54.

11. Install the telescoping front rigging supports. Refer to Adjusting/Replacing

Telescoping Front Rigging Supports on page 73.

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 72 Part No 1114842

12. Install the back. Refer to Removing/Installing Back Assembly on page 91.

13. Install the arms. Refer to Arms on page 114.

FIGURE 6.14 Removing/Installing Center Seat Frame

!

Front

Pivot

Assembly

Shoulder

Bolt

Tilt

Link

DETAIL “B” - TILT LINK AND FRONT

PIVOT ASSEMBLY MOUNTING LOCATION

Locknut

Pin

Retaining

Ring

DETAIL “D” - TRANSFER HARDWARE

Washers

Retaining

Ring

Washer

Shoulder

Bolt

Tilt

DETAIL “C” - CENTER FRAME AND REAR

PIVOT ASSEMBLY MOUNTING LOCATION

Washers

Center Seat

Frame

See Detail “C”

Locknut

Center Seat

Frame

Shoulder

Bolt

Rear Pivot

Assembly

DETAIL “A” - CENTER FRAME AND REAR

PIVOT ASSEMBLY MOUNTING LOCATION

See Detail “D”

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 73 2G Tarsys®Powered Seating System

Adjusting/Replacing Telescoping Front Rigging

Supports

NOTE: For this procedure, refer to FIGURE 6.15.

1. Remove the two hex bolts, spacers and locknuts that secure the telescoping front

rigging support to the seat frame.

2. Perform one of the following:

• Slide existing telescoping front rigging support to one of three depth positions.

• Remove existing telescoping front rigging support and install new telescoping

front rigging support.

3. Secure telescoping front rigging at desired depth with existing two hex bolts, spacers,

and locknuts. Torque mounting screws to 75 in-lbs ± 20%.

NOTE: The two telescoping front rigging supports can be positioned at different depths depending

on the need of the user.

FIGURE 6.15 Adjusting/Replacing Telescoping Front Rigging Supports

Adjusting/Replacing Leg Support Tubes

NOTE: For this procedure, refer to FIGURE 6.16 on page 74.

NOTE: Only systems equipped with mechanical legrests require leg support tubes.

Adjusting Leg Support Tubes

1. Refer to FIGURE 6.16 and determine the corresponding mounting hole on the

adjustment slide for the desired seat depth.

2. Remove the socket bolt and locknut that secure the adjustment slide to the leg support

tube.

3. Position the adjustment slide to the mounting hole determined in STEP 1.

Hex Bolts

Seat Frame

Telescoping Front

Rigging Support

Locknuts

Spacers

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 74 Part No 1114842

4. Reinstall socket screw and locknut that secure the adjustment slide to leg support

tube. Tighten securely.

5. Repeat STEPS 1-4 for the opposite leg support tube.

Replacing Leg Support Tubes

1. Remove the locknut and spacer that secure the existing leg support tube to the

connecting bracket.

2. Remove existing leg support from seating system.

3. Position the spacer and new leg support on the connecting bracket.

4. Install the locknut and tighten securely.

5. Adjust the leg support tube for the desired seat depth. Refer to Adjusting Leg Support

Tubes on page 73.

FIGURE 6.16 Adjusting/Replacing Leg Support Tubes

SEAT DEPTH LEG SUPPORT TUBE MOUNTING POSITION

ADJUSTMENT SLIDE

16 inches Short

17 inches Short

18 inches Short

19 inches Short

20 inches Long

21 inches Long

22 inches Long

Socket Bolt

Connecting Bracket

(Under Seat Pan)

Leg Support Tube

Locknuts

Spacers

Locknuts

Adjustment

Slide

18 inches

16 inche

s

19 inches

17 inches

DO NOT use these holes

22 inches

20 inches

21 inches

DO NOT use these holes

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 75 2G Tarsys®Powered Seating System

Removing/Installing the Seat

NOTE: If retrofitting a seating system, DO NOT use this procedure. Refer to the 2G Tarsys

Seating System Installation on TDX instruction sheet, part number 1134889.

Removing

Disconnecting Cables

NOTE: For this procedure, refer to FIGURE 6.17 on page 76.

NOTE: Invacare recommends two people perform this procedure.

1. Tilt Only and Tilt/Recline Systems - Tilt the seat back 10° to 15° to allow easier access

to the hardware securing the seating system to the base.

2. Turn off the joystick.

3. Disconnect the joystick.

4. Disconnect the TRCM, TAC or SAC from the MK5 controller (5-pin connector).

5. Disconnect the auxiliary power connectors from the power take off connectors (not

shown) on the controller.

6. Perform one of the following:

• Tilt Only and Tilt/Recline Systems -

i. Disconnect the tilt actuator connector (2-pin Anderson) from the TRCM, TAC,

SAC or TRSS.

ii. Disconnect the tilt potentiometer connector (3-pin Molex) from the TRCM,

TAC, SAC or TRSS.

• Recline Only Systems - Disconnect the recline potentiometer connector (3-pin

Molex) from the TRCM or TAC.

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 76 Part No 1114842

FIGURE 6.17 Disconnecting Cables - Connecting Cables

To Recline

Actuator (2-pin

Anderson

Connector)

To Tilt

Actuator

(2-pin

Anderson

Connector)

To VSR

Actuator

(2-pin

Anderson

Connector)

To Right Power

Elevating

Legrest (2-pin

Anderson

Connector)

To Left Power

Elevating Legrest

(2-pin Anderson

Connector)

To Recline

Potentiometer

(3-pin Molex

Connector)

To Tilt

Potentiometer

(3-pin Molex

Connector)

Auxiliary

Power

Connector

To MK5

Controller

(5-pin

Connector)

Accessory

Connector

(9-pin Sub D)

Remote

Programmer

Port TRCM or

TAC

DETAIL “A” - TRCM OR TAC DETAIL “B” - SAC

DETAIL “C” - TRSS

SAC

5-pin Connector

(To Controller)

Auxiliary

Power

Connector

Actuator Connector

(WHITE 2-pin Anderson)

Mercury Switch Connector

(3-Pin Molex Connector)

Auxiliary Power

Connector

Actuator

Connector

(WHITE)

Mercury Switch Connector

(Molex Connector)

TRSS

Rear Pivot

Assembly

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 77 2G Tarsys®Powered Seating System

Removing the Seat

NOTE: For this procedure refer to FIGURE 6.18 on page 78.

1. Perform one of the following steps:

• Tilt Only and Tilt/Recline Seating Systems:

i. Remove the socket screw to disconnect the tilt potentiometer linkage from the

center seat frame (Detail “A”).

ii. Note the mounting position of the tilt angle blocks for proper installation

(Detail “B”).

iii. One person should support the front of the seating frame.

iv. The remaining person should remove the two shoulder bolts and locknuts

securing the tilt links, bushings and tilt angle blocks to the front pivot assembly

(Detail “B”).

v. Carefully set the front of the seating system down onto the base.

• Recline Only Seating Systems:

i. Note the mounting position of the recline links for proper installation (Detail

“C”).

ii. One person should support the front of the seat frame.

iii. The remaining person should remove the two shoulder bolts and locknuts

securing the recline links to the front pivot assembly (Detail “C”).

2. Remove the two socket head shoulder screws and locknuts securing the rear of the

center seat frame to the rear pivot assembly (Detail “D”).

3. Carefully remove the seat from the base.

Installing

Connecting the Seat

NOTE: For this procedure refer to FIGURE 6.18 on page 78.

1. Carefully set the seating system onto the base.

2. Install the two socket head shoulder screws and locknuts to secure the rear of the

center seat frame to the rear pivot assembly (Detail “D”). Torque to 23 ft-lbs ± 20%.

SECTION 6—SEAT ADJUSTMENTS

2G Tarsys®Powered Seating System 78 Part No 1114842

FIGURE 6.18 Removing the Seat - Connecting the Seat

DETAIL “A” - TILT POTENTIOMETER LINKAGE

DETAIL “B” - TILT LINKS AND TILT ANGLE BLOCKS

DETAIL “C” - RECLINE LINKS DETAIL “D” - REAR PIVOT

ASSEMBLY

Socket

Screw

Tilt Potentiometer

Linkage

Center

Seat

Frame

Orientation of angle block shown

is for 5° seat angle

Locknuts

Spacer

Spacer

Link

Shoulder Bolt

Mounting Hole for 0°

seat angle

Use this mounting hole for

0° seat angle

Front Pivot Assembly

Orientation of angle block shown

is for 0° seat angle

Shoulder Bolt

Link

Mounting Hole for 5°

Seat Angle

Use this mounting

hole for 5° seat angle

10° and 15°

Recline Link

Shoulder

Bolt

Front Pivot

Assembly

Locknut

Mounting hole

for 10° recline

Mounting

hole for 15°

recline

Mounting

hole for 5°

recline

Mounting hole for

0° recline

Front Pivot

Assembly

Locknut

0° and 5° Recline Link

Shoulder Bolt

0° and 5° Recline Link

10° and 15° Recline Link

Locknut

Center

Seat

Frame

Shoulder

Bolt

Rear Pivot Assembly

SECTION 6—SEAT ADJUSTMENTS

Part No 1114842 79 2G Tarsys®Powered Seating System

3. Perform one of the following:

• Recline Only Systems -

i. One person should support the front of the seating system.

ii. The other person should secure the recline links to the front pivot assembly,

using the two shoulder bolts and locknuts in the location noted when removing

the seating system (Detail “C”). Torque to 23 ft-lbs ± 20%.

iii. Connect the recline potentiometer connector (3-pin Molex) to the TRCM.

• Tilt Only and Tilt/Recline Systems -

i. One person should support the front of the seating system.

ii. Using the two shoulder bolts and locknuts, the other person should secure the

tilt links, bushings and tilt angle blocks to the front pivot assembly (Detail “B”).

Torque to 23 ft-lbs ± 20%.

NOTE: The tilt angle blocks should be mounted in the position noted when removing the

seating system.

iii. Install the socket screw to secure the tilt potentiometer linkage to the center seat

frame (Detail “A”).

4. Connect the cables.

Connecting Cables

NOTE: For this procedure refer to FIGURE 6.17 on page 76.

1. Perform one of the following:

• Tilt Only and Tilt/Recline Systems -

i. Connect the tilt actuator connector (2-pin Anderson) to the TRCM, TAC, SAC

or TRSS.

ii. Connect the tilt potentiometer connector (3-pin Molex) to the TRCM, TAC, SAC

or TRSS.

• Recline Only Systems - Connect the recline potentiometer connector (3-pin Molex)

to the TRCM, TAC, SAC or TRSS.

2. Connect the auxiliary power connector to the power take-off connector (not shown)

on the controller.

3. Connect the TRCM, SAC or TAC to the MK5 controller (5-pin connector).

4. Connect the joystick.

5. Perform the post-service inspection of the system. Refer to Post-Service Inspection

Checklist on page 21.

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 80 Part No 1114842

SECTION 7—BACK ADJUSTMENTS

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Adjusting Back Width

NOTE: When changing the width of the back, the width of the entire seating system needs to be

changed. Refer to Adjusting Seat Width on page 55.

Adjusting Back Angle

NOTE: The following procedure is for Tilt-Only seating systems.

NOTE: For this procedure, refer to FIGURE 7.1 on page 81.

1. Refer to Detail “A” in FIGURE 7.1 to determine the corresponding connector bracket

mounting holes for the desired back angle.

 WARNING

Support the weight of the back BEFORE removing the hex bolt and shoulder bolt on

the opposite side of the seat frame. Otherwise, injury or damage may occur.

2. Remove the shoulder bolt, washer and locknut that secure the curved link to the rear

of the slide block and connector bracket.

3. Remove the hex bolt, washer and locknut that secure the front of the slide block to the

connector bracket.

4. With back supported, repeat STEPS 2-3 for the opposite side of the seat frame.

5. Line up the mounting holes in the slide block with the connector bracket mounting

holes determined in STEP 1.

6. Reinstall the hex bolt, washer and locknut that secure the front of the slide block to the

connector bracket and loosely tighten. Refer to FIGURE 7.1 for hardware orientation.

7. Repeat STEP 6 for the opposite side of the seat frame.

8. Line up the mounting holes in the curved link, slide block and connector bracket.

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 81 2G Tarsys®Powered Seating System

9. Reinstall the shoulder bolt, washer and locknut that secure the curved link to the rear

of the slide block and connector bracket and loosely tighten. Refer to FIGURE 7.1 for

hardware orientation.

10. Repeat STEPS 8-9 for the opposite side of the seat frame.

11. Torque all locknuts to 13 ft-lbs ± 20% (156 in-lbs ± 20%).

12. Adjust tilt and/or recline potentiometers. Refer to the electronics manual listed in

Reference Documents on page 2.

FIGURE 7.1 Adjusting Back Angle

Connector Bracket (not shown)

Locknuts

Slide Block

Washer

Hex Bolt

Shoulder Bolt

Washer

Curved Link

90°

100°

110°

95°

105°

115°

DETAIL “A” - CONNECTOR BRACKET MOUNTING HOLES

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 82 Part No 1114842

Removing/Installing the Curved Links

Tilt Only Systems

NOTE: For this procedure, refer to FIGURE 7.2 on page 83.

Removing

 WARNING

Perform this procedure on one side of the wheelchair at a time. Otherwise the back

will be completely disconnected from the seat and injury or damage may occur.

1. Remove the side shroud. Refer to Removing/Installing Side Shrouds on page 100.

2. Remove the small socket screw and locknut securing the top of the curved link to the

back cane.

3. Remove the large socket screw, nylon washer and locknut securing the rear of the slide

block to the connecting bracket.

4. Remove the curved link from the wheelchair.

Installing

1. Secure the top of the curved link to the back cane using the small socket screw and

locknut. Torque to 23 ft-lbs ± 20%.

2. Secure the bottom of the curved link to the rear of the slide block and the connecting

bracket using the large socket screw, nylon washer and locknut in the same position

used on the opposite side of the wheelchair. Torque to 156 in-lbs ± 20%.

 WARNING

Side shroud(s) MUST be reinstalled before operation of the seating system. Other-

wise injury may result.

3. Install the side shroud. Refer to Removing/Installing Side Shrouds on page 100.

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 83 2G Tarsys®Powered Seating System

FIGURE 7.2 Removing/Installing the Curved Links - Tilt Only Systems

Recline Only and Tilt/Recline Systems

NOTE: For this procedure, refer to FIGURE 7.3 on page 84.

Removing

 WARNING

Perform this procedure on one side of the wheelchair at a time. Otherwise the back

will be completely disconnected from the seat and injury or damage may occur.

1. Remove the side shroud. Refer to Removing/Installing Side Shrouds on page 100.

2. Remove the short socket screw, nylon washer, flat washer and locknut securing the top

of the curved link to the back cane.

3. Remove the long socket screw, nylon washer and locknut securing the rear of the slide

block to the connecting bracket.

4. Remove the curved link from the wheelchair.

Nylon

Washer

Locknuts

Connecting

Bracket

Small Socket Screw

Curved Link

Back Cane

Large Socket Screw

Slide

Block

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 84 Part No 1114842

Installing

CAUTION

The curved link MUST be installed with the notched side facing out. Otherwise,

damage to the seating system may result.

1. Orient the curved link so the notched side is facing out.

2. Secure the top of the curved link to the back cane using the short socket screw, nylon

washer, flat washer and locknut. Torque to 156 in-lbs ± 20%.

3. Secure the bottom of the curved link to the rear of the slide block and the connecting

bracket using the long socket screw, nylon washer and locknut in the same position

used on the opposite side of the wheelchair. Torque to 23 ft-lbs ± 20%.

 WARNING

Side shroud(s) MUST be reinstalled before operation of the seating system.

Otherwise injury may result.

4. Install the side shroud. Refer to Removing/Installing Side Shrouds on page 100.

FIGURE 7.3 Removing/Installing the Curved Links - Recline Only and Tilt/Recline Systems

Long Socket Screw

Nylon

Washer

Locknuts

Connecting

Bracket

Short

Socket

Screw

Curved Link

Back

Cane

Nylon

Washer

Flat

Washer

Slide Block

Notch

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 85 2G Tarsys®Powered Seating System

Removing/Installing Back Pan

NOTE: For this procedure, refer to FIGURE 7.4 on page 86.

Removing

1. Remove the headrest from the seating system. Refer to

Removing/Installing/Adjusting Headrest on page 124.

2. Lift up on the fastening straps and remove the cushion from the existing back pan.

3. Perform one of the following:

• Tilt-Only Systems - Proceed to STEP 4.

• Tilt/Recline and Recline-Only Systems:

i. Disconnect the VSR actuator cable from the TRCM or TAC.

ii. Remove the two mounting screws and locknuts that secure the VSR actuator

mounting bracket to the existing back pan.

4. Remove the two mounting screws that secure the headrest mounting bracket to the

existing back pan.

5. Remove headrest bracket from the existing back pan.

NOTE: For 17, 19, and 21-inch width backs, spacers are required for proper installation.

6. Remove the four mounting screws and spacers (if applicable) that secure the existing

back pan to the two back slides.

7. Remove existing back pan from the two back slides.

Installing

1. Line up the mounting holes in the new/existing back pan with the two new/existing

back slides.

NOTE: For 17, 19, and 21-inch width profile backs, spacers are required for proper installation.

2. Install the four mounting screws and spacers (if applicable) that secure the

new/existing back pan to the two new/existing back slides. Tighten securely.

3. Position the headrest bracket on the new/existing back pan.

4. Install the two mounting screws and locknuts that secure the headrest bracket to the

new/existing back pan. Tighten securely.

5. Perform one of the following:

• Tilt-Only Systems - Proceed to STEP 6.

• Tilt/Recline and Recline-Only Systems:

i. Reposition the mounting holes in the VSR actuator bracket with the mounting

holes in the new back pan.

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 86 Part No 1114842

ii. Reinstall the two mounting screws and locknuts that secure the VSR actuator

mounting bracket to the new back pan. Tighten securely.

iii. Connect the VSR actuator to the TRCM or TAC.

iv. Adjust back height. Refer to Adjusting the Back Height on page 92.

6. Install the cushion onto the new back pan.

7. Install the headrest onto the seating system. Refer to Removing/Installing/Adjusting

Headrest on page 124.

FIGURE 7.4 Removing/Installing Back Pan

Headrest Mounting Bracket

Button

Screws

Hex

Screws VSR Actuator

Mounting Bracket VSR Actuator

Back Pan

Back Slide

Mounting Screws

ABS Back

Back Pan

Back Slide

Mounting Screws

Rear View

Profile Back

Spacer

NOTE: For back

widths of 17, 19, or 21

inches, spacers are

required between back

slide and back pan.

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 87 2G Tarsys®Powered Seating System

Removing/Installing Spreader Bar

Slotted Back Canes

NOTE: For this procedure, refer to FIGURE 7.5.

Removing

1. Note the position of the existing spreader bar, by measuring from the top of the back

canes to the top of the spreader bar.

2. Note the position of the back pan, by measuring from the top of the back pan to the

top of the back canes. Systems with Recline - remove the hex bolt and locknut that

secure the VSR actuator to the existing spreader bar.

NOTE: When the spreader bar is disconnected from the VSR actuator, the back pan ASM may slide

out of position.

3. Loosen, but DO NOT remove, the four hex screws that secure the existing spreader bar

to the back canes.

4. Lift up and remove the existing spreader bar, with T-nuts, from the slots on the back canes.

5. If installing a new spreader bar, remove the four screws and T-nuts from the existing

spreader bar.

FIGURE 7.5 Removing/Installing Spreader Bar - Slotted Back Canes

Hex

Screws/T-Nuts

(T-Nuts in Back

Cane Slot)

Spreader Bar

DETAIL “A”

VSR Actuator

Locknut

Hex Bolt

Back Pan ASM

NOTE A: Measurements from

the top of the back cane to the top

of the back pan MUST be equal.

NOTE B: Measurements from

the top of the back cane to the top

of the spreader bar MUST be

equal.

NOTE A

NOTE B

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 88 Part No 1114842

Installing

1. For new spreader bars, loosely install the four T-nuts and hex screws onto the new

spreader bar.

2. Align the T-nuts on the spreader bar with the slots in the back canes.

3. Slide the spreader bar to the position noted in STEP 1 of Removing on page 87.

4. Perform one of the following:

• Tilt-Only systems - Proceed to STEP 5.

• Tilt/Recline and Recline-Only Systems:

i. Line up the mounting holes in the VSR actuator and spreader bar.

ii. Install hex bolt and locknut through VSR actuator and spreader bar. Tighten

securely.

5. Make sure the measurements shown in Detail “A” are the same on both sides.

6. Tighten the four hex screws that secure the spreader bar to the back canes. Torque to

75 in-lbs ± 20%.

Round Back Canes

NOTE: For this procedure, refer to

FIGURE 7.6.

Removing

1. Note the position of the existing

spreader bar.

2. Remove the three mounting screws

that secure the two half clamps and

existing spreader bar to the back cane.

Repeat for other side.

3. Remove the existing spreader bar and

half clamps from the back canes.

Installing

1. Install the spreader bar to the position

noted in STEP 1 of Removing with the

existing two half clamps and six

mounting screws.

2. Make sure the measurements shown in

FIGURE 7.6 are the same.

3. Torque the six mounting screws that

secure the half clamps and spreader bar

to the back canes to 75 in-lbs ± 20%.

FIGURE 7.6 Removing/Installing Spreader

Bar - Round Back Canes

Spreader Bar

Round

Back

Cane

Half

Clamps

Mounting

Screws

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 89 2G Tarsys®Powered Seating System

Removing/Installing Back Canes

NOTE: For this procedure, refer to FIGURE 7.7.

Removing

1. Remove the arms. Refer to Arms on page 114.

2. Remove the spreader bar. Refer to Removing/Installing Spreader Bar on page 87.

3. Remove the short shoulder bolt, two washers and locknut that secure the existing back

cane to the curved link.

4. Remove the long shoulder bolt and locknut that secure the existing back cane to the

seat frame.

5. Remove the existing back cane from the wheelchair.

6. If necessary, repeat STEPS 2-4 for opposite back cane.

Installing

1. Position the new back cane on the seat frame as shown in FIGURE 7.7.

2. Install the long shoulder bolt that secures the new back cane to the seat frame.

3. Install the locknut onto the shoulder bolt and torque to 13 ft-lbs ± 20% (156 in-lbs ±

20%).

4. Line up the mounting holes in the new back cane and curved link.

5. Install the short shoulder bolt and two washers that secure the new back cane to the

curved link. Refer to FIGURE 7.7 for correct hardware orientation.

6. Install the locknut onto the shoulder bolt and torque to 13 ft-lbs ± 20% (156 in-lbs ±

20%).

7. If necessary, repeat STEPS 1-6 for the opposite back cane.

8. Install the spreader bar. Refer to Removing/Installing Spreader Bar on page 87.

9. Install the arms. Refer to Arms on page 114.

FIGURE 7.7 Removing/Installing Back Canes

Back Cane

Washer

Short

Shoulder

Bolt

Curved Link

Seat Frame

Locknuts

Washer

Long

Shoulder

Bolt

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 90 Part No 1114842

Removing/Installing Back Slide Assembly

NOTE: For this procedure, refer to FIGURE 7.8 on page 91.

Removing

1. Remove the back pan. Refer to Removing/Installing Back Pan on page 85.

2. Perform one of the following:

• Tilt-Only Systems - Remove the two shoulder screws and washers that secure the

two existing back slides to the existing back canes from the BOTTOM mounting

hole.

• Tilt/Recline and Recline-Only Systems - Remove the two shoulder screws and

washers that secure the two existing back slides to existing back canes from the

TOP mounting hole.

3. Slide the existing back slide assembly up and off the existing back canes.

NOTE: There are plastic sleeves positioned between the back slides and the back canes. These may

fall out when back slide assembly is removed.

Installing

1. Install the two new/existing plastic sleeves on the new/existing back canes.

2. Slide the new/existing back/back slide assembly onto the two new/existing back canes.

3. Line up the mounting holes in the new/existing back/back slide assembly, two plastic

sleeves and new/existing back canes.

4. Perform one of the following:

• Tilt-Only Systems - Install the two shoulder screws that secure the two

new/existing back slides and plastic sleeves to the new/existing back canes on the

BOTTOM mounting hole. Tighten securely.

• Tilt/Recline and Recline-Only Systems - Install the two shoulder screws that secure

the two new/existing back slides and plastic sleeves to the new/existing back canes

on the TOP mounting hole. Tighten securely.

5. Perform one or more of the following:

• Replace the back canes. Refer to Removing/Installing Back Canes on page 89.

• Install the back pan. Refer to Removing/Installing Back Pan on page 85.

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 91 2G Tarsys®Powered Seating System

FIGURE 7.8 Removing/Installing Back Slide Assembly

Removing/Installing Back Assembly

NOTE: For this procedure, refer to FIGURE 7.9 on page 92.

Removing

1. Remove the two large shoulder bolts, washers and locknuts that secure the two curved

links to the two slide blocks.

2. Remove the two small shoulder bolts and locknuts that secure the two back canes to

the seat frame.

3. Remove the back assembly from the seat frame.

Installing

1. Line up the mounting holes in the back assembly and the seat frame.

2. Loosely install the two small shoulder bolts and locknuts that secure the two back

canes to the seat frame.

3. Loosely install the two large shoulder bolts, washers and locknuts that secure the two

curved links to the two slide blocks.

4. Torque the four locknuts to 13 ft-lbs ± 20% (156 in-lbs ± 20%).

Washer

Plastic Sleeve

(Between Back Cane

and Back Slide)

Back Cane

Shoulder

Screw

TOP

Mounting

Hole

Back Slide

Tilt/Recline

Washer

Plastic Sleeve

(Between Back Cane

and Back Slide)

Back

Cane

Shoulder Screw

BOTTOM

Mounting

Hole

Back

Slide

Tilt-Only Systems

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 92 Part No 1114842

FIGURE 7.9 Removing/Installing Back Assembly

Adjusting the Back Height

Overview

Back heights can be adjusted 1-inch within the range of back canes up to 25 inches high.

NOTE: The back pan may need to be replaced**. Refer to Removing/Installing Back Pan on

page 85.

The back height can be adjusted beyond the range of the existing back canes, up to 26

inches*, when the back canes and back slides/plastic inserts** are replaced.

• Refer to Removing/Installing Back Canes on page 89.

• Refer to Removing/Installing Back Slide Assembly on page 90.

NOTE: All measurements in inches.

*NOTE: Tilt Only systems with round back canes can only be adjusted up to 25 inches.

**NOTE: For systems with slotted back canes only.

Back Height Components

BACK

HEIGHT

BACK CANE BACK SLIDE/PLASTIC

INSERT**

20 20 11¼

21

22 22 13¼

23

24 24 15¼

25

26* 26 17¼

Slide Block

Small Shoulder Bolt Locknuts

Seat Frame

Large Shoulder Bolt

Small Shoulder Bolt

Large Shoulder Bolt

Back Assembly

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 93 2G Tarsys®Powered Seating System

Removing/Installing Arm Pivots

NOTE: For this procedure, refer to FIGURE 7.10.

NOTE: The following procedure is for Tilt/Recline and Recline-Only seating systems.

Removing

1. If necessary, remove the lateral supports from the seating system. Refer to

Installing/Removing/Adjusting Lateral Supports on page 95.

2. Note the position of the existing arm pivot.

3. Loosen, but DO NOT remove, the two hex bolts that secure the existing arm pivot to

the back slide.

4. Slide the existing arm pivot off the back slide.

Installing

1. If necessary, loosely install the four T-nuts and hex bolts onto the new arm pivot.

2. Position the new/existing arm pivot and line up the T-nuts with the slots in the

new/existing back slides.

3. Slide the new/existing arm pivot to the position noted in STEP 2 above.

NOTE: If a change in armrest height is desired, Refer to Adjusting Armrest Height on page 115.

4. Torque the two hex bolts that secure the new/existing arm pivot to the back slide to 50

in-lbs ± 20%.

5. If necessary, repeat STEPS 1-4 for the opposite side of the seating system.

6. If necessary, install the lateral supports onto the seating system. Refer to

Installing/Removing/Adjusting Lateral Supports on page 95.

FIGURE 7.10 Removing/Installing Arm Pivots

Hex Bolts T-Nuts

Channel

Back Slid

e

Arm Pivot

Back Cane

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 94 Part No 1114842

Removing/Installing/Adjusting Chest Positioning Strap

NOTE: For this procedure, refer to FIGURE 7.11.

NOTE: This procedure applies to systems with slotted canes only.

Removing

1. Note the position of the existing chest positioning strap.

2. Loosen, but DO NOT remove, the socket screw that secures the existing chest

positioning strap to the back slide.

3. Slide the existing chest positioning strap off the back slide.

Installing

1. If necessary, loosely install the T-nut and hex screw onto the new chest positioning

strap.

2. Position the new/existing chest positioning strap and line up the T-nuts with the slots

in the back slide.

3. Slide new/existing chest positioning strap to the position noted in STEP 1 in Removing

on page 93.

4. Tighten the two socket screws that secure the new/existing chest positioning strap to

the back slide securely.

Adjusting Height

1. Loosen, but DO NOT remove, the two

socket screws that secure the chest

positioning strap to the back slide.

2. Slide the chest positioning strap to the

desired position.

3. Tighten the two socket screws that

secure the chest positioning strap to the

back slide securely.

FIGURE 7.11 Removing/Installing/Adjusting

Chest Positioning Strap

Chest

Positioning Strap

Back

Slide

Washer T-Nut

Socket Screw

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 95 2G Tarsys®Powered Seating System

Installing/Removing/Adjusting Lateral Supports

Slotted Canes

Removing Lateral Supports

NOTE: For this procedure, refer to FIGURE 7.12.

1. Note the position of the existing lateral support on the back slide.

2. Loosen, but DO NOT remove, the two socket screws that secure the existing lateral

support to the back slide.

3. Slide the existing lateral support up and off the back slide.

Installing Lateral Supports

NOTE: For this procedure, refer to FIGURE 7.12.

1. If necessary, loosely install the two T-nuts and hex screws onto the new lateral

support.

2. Position the new/existing lateral support and line up the T-nuts with the slots in the

new/existing back slide.

3. Slide new/existing lateral support to the desired position.

4. Tighten the two socket screws that secure the new/existing lateral support to the back

slide securely.

FIGURE 7.12 Removing Lateral Supports - Installing Lateral Supports

Lateral Support

Back Slide

Socket Screw

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 96 Part No 1114842

Adjusting Height

NOTE: For this procedure, refer to FIGURE 7.13.

1. Loosen, but DO NOT remove, the two socket screws that secure the existing lateral

support to the back slide.

2. Slide the lateral support to the desired position.

3. Tighten the two socket screws that secure the lateral support to the back slide securely.

Adjusting Depth

NOTE: For this procedure, refer to FIGURE 7.13.

1. Remove the two flat screws that secure the lateral support pad to the mounting

bracket.

2. Reposition the lateral support pad to the other set of mounting holes.

3. Reinstall the two flat screws and tighten securely.

Adjusting Width

NOTE: For this procedure, refer to FIGURE 7.13.

1. Note depth mounting position of the lateral support.

2. Remove the two flat screws that secure the lateral support pad to the existing

mounting bracket.

3. Remove the two socket screws that secure the mounting bracket to the hinge.

4. Line up the mounting holes in the new mounting bracket with the hinge.

5. Install the socket screws to secure the new mounting bracket to the hinge and tighten

securely.

6. Line up the lateral support pad to the position noted in STEP 1.

7. Reinstall the two flat screws and tighten securely.

FIGURE 7.13 Adjusting Lateral Supports

Lateral

Support

Pad

Socket

Screws

Mounting

Brackets

(Available)

Back Slide

Flat Screws

Hinge

SECTION 7—BACK ADJUSTMENTS

Part No 1114842 97 2G Tarsys®Powered Seating System

Round Canes

Removing Lateral Supports

NOTE: For this procedure, refer to FIGURE 7.14.

1. Remove the three hex screws securing the half clamps to the back canes.

2. Remove the two socket screws securing the bracket (with lateral support attached) to

the half clamp.

Installing Lateral Supports

NOTE: For this procedure, refer to FIGURE 7.14.

1. Position the half clamps on the back cane.

NOTE: Ensure the half clamp with the threaded holes is towards the front of the wheelchair.

2. Secure the half clamps to the back canes using the three hex screws.

3. Secure the bracket (with lateral support attached) to the half clamp with threaded

holes using two socket screws.

FIGURE 7.14 Removing/Installing Lateral Supports - Round Canes

Adjusting Lateral Height

NOTE: For this procedure, refer to

FIGURE 7.15.

1. Loosen, but DO NOT remove, the three

socket screws securing the half clamps

to the back cane.

2. Adjust the height of the lateral support.

3. Tighten the three socket screws to

secure the half clamps to the back cane. FIGURE 7.15 Adjusting Lateral Height

Lateral

Support

Socket

Screws

Half Clamp with

Threaded Holes

Half Clamp

Back Cane

Socket

Screws

Bracket

Front of

Wheelchair

Rear of

Wheelchair

Lateral

Support

Socket Screws

Half Clamp

Back Cane

SECTION 7—BACK ADJUSTMENTS

2G Tarsys®Powered Seating System 98 Part No 1114842

Adjusting Lateral Depth

NOTE: For this procedure, refer to FIGURE 7.16.

1. Remove the two flat screws that secure the lateral support pad to the bracket.

2. Reposition the bracket to the other set of mounting holes in the lateral support.

3. Install the two flat screws to secure the lateral support pad to the bracket.

FIGURE 7.16 Adjusting Lateral Depth

Adjusting Lateral Width

NOTE: For this procedure, refer to FIGURE 7.17.

1. Note the depth mounting position of the lateral support pad.

2. Remove the two flat screws that secure the lateral support pad to the existing bracket.

3. Remove the two socket screws that secure the existing bracket to the hinge.

4. Align the mounting holes in the new bracket with the mounting holes in the hinge.

5. Use the two socket screws to secure the new bracket to the hinge.

6. Secure the lateral support pad to the new bracket with the two flat screws.

FIGURE 7.17 Adjusting Lateral Width

Lateral Support Pad

Flat Screws

Mounting Holes Bracket

Lateral Support Pad

Flat Screws

Hinge

Socket Screws

Bracket

SECTION 8—SHROUDS

Part No 1114842 99 2G Tarsys®Powered Seating System

SECTION 8—SHROUDS

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Shroud Overview

NOTE: For this procedure, refer to FIGURE 8.1.

FIGURE 8.1 Shroud Overview

VSR Shroud

Refer to

Removing/Installing VSR

Shroud on page 100.

Rear Seat Shroud

Refer to

Removing/Installing Rear

Seat Shroud on page 101.

Side Shroud

(also on opposite side)

Refer to

Removing/Installing Side

Shrouds on page 100.

Lower Seat Shroud

Refer to

Removing/Installing Lower

Seat Shroud on page 102.

Controller Shroud

Refer to

Removing/Installing Rear

Shroud on page 102.

SECTION 8—SHROUDS

2G Tarsys®Powered Seating System 100 Part No 1114842

Removing/Installing VSR Shroud

NOTE: For this procedure, refer to FIGURE 8.2.

1. To remove, cut the two tie-wraps that secure the VSR shroud in place.

2. Pull on the VSR shroud to disengage from the fastening strip.

3. Secure VSR shroud to VSR mounting tube in place with two tie-wraps as shown in

FIGURE 8.2.

FIGURE 8.2 Removing/Installing VSR Shroud

Removing/Installing Side Shrouds

 WARNING

Side shroud(s) MUST be reinstalled before operation of the seating system.

Otherwise injury may result.

NOTE: For this procedure, refer to FIGURE 8.3 on page 101.

1. Remove the mounting screw and washer that secure the side shroud to the seat frame.

2. To install side shrouds, align side shroud with fastening strips and secure with

mounting screw and washer. Securely tighten.

NOTE: Only the right side shroud is shown for clarity. The left side shroud removes/installs in the

same manner.

VSR Mounting

Tube

Tie-Wraps

VSR

Shroud

Fastening

Strip

SECTION 8—SHROUDS

Part No 1114842 101 2G Tarsys®Powered Seating System

FIGURE 8.3 Removing/Installing Side Shrouds

Removing/Installing Rear Seat Shroud

NOTE: For this procedure, refer to FIGURE 8.4.

1. Remove the screw located on the back of the shroud.

2. To remove, pull up on rear seat shroud to disengage from fastening strips.

3. To install, align fastening strips on rear seat shroud with fastening strips on frame.

Position rear seat shroud in place and firmly press down. Install the phillips head

screw.

FIGURE 8.4 Removing/Installing Rear Seat Shroud

Side Shroud

Washer

Mounting

Screw

Seat Frame

Fastening

Strip

Fastening

Strip

Fastening

Strips

Fastening Strips

(Located on

underside of Shroud)

NOTE: There are three

fastening strips located on

rear pivot assembly.

SECTION 8—SHROUDS

2G Tarsys®Powered Seating System 102 Part No 1114842

Removing/Installing Rear Shroud

NOTE: For this procedure, refer to FIGURE 8.5.

1. Verify the joystick On/Off switch is in the Off position.

2. Remove the two thumb screws that secure the rear shroud to the wheelchair.

3. Remove the rear shroud from the wheelchair.

FIGURE 8.5 Removing/Installing Rear Shroud

Removing/Installing Lower Seat Shroud

NOTE: For this procedure, refer to FIGURE 8.6 on page 103.

1. Perform one of the following actions:

• Tilt-Only Systems and Tilt/Recline Systems - Tilt seat to maximum angle.

• Recline-Only Systems:

i. Note the mounting location of the hardware securing the recline links to the

front pivot assembly.

ii. Remove the two shoulder bolts, washers and locknuts that secure the recline

links to the front pivot assembly (Detail “A”).

 WARNING

To ensure safety, secure seat in tilted position before removing/installing the lower

seat shroud. Otherwise, injury may result.

iii. Tilt seat back and secure in tilted position.

2. Remove the mounting screw, coved washer, washer and locknut that secure the rear

portion of the lower seat shroud to the seat frame (Detail “B”).

NOTE: The mounting screw, coved washer, washer and locknut also secure the seat pan to the seat

frame.

3. Remove the two mounting screws that secure the front portion of the lower seat

shroud to the seat frame (Detail “C”).

4. To install lower seat shroud, reverse STEPS 1-3.

Thumb Screws

Rear

Shroud

SECTION 8—SHROUDS

Part No 1114842 103 2G Tarsys®Powered Seating System

FIGURE 8.6 Removing/Installing Lower Seat Shroud

@

Seat Frame

Mounting

Screw

Locknut

Lower Seat

Shroud

Coved

Washer

DETAIL B: REAR MOUNTING HARDWARE

DETAIL “A” - RECLINE ONLY SYSTEMS

Recline Link Locknut

Shoulder

Bolt

Front Pivot

Assembly

NOTE: 10°/15° recline link

shown. 0°/5° recline link

installs in the same way.

DETAIL C: FRONT MOUNTING HARDWARE

Washer

Mounting

Screw

Seat Frame

NOTE: Seat pan not shown for clarity.

Hardware shown also secures seat pan to seat

frame.

Lower Seat

Shroud

SECTION 9—POWER ELEVATING LEGRESTS

2G Tarsys®Powered Seating System 104 Part No 1114842

SECTION 9—POWER ELEVATING

LEGRESTS

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

NOTE: For complete operating information on Invacare elevating legrests, refer to the TDX

Owner's Manual, listed in Reference Documents on page 2.

Installing/Removing the Power Elevating Legrests

 WARNING

To prevent personal injury, ALWAYS verify proper positioning of legs and feet prior

to use. Individual user weight may impact the rate of travel for each legrest

assembly. If simultaneous operation is desired, select a speed which allows for the

most uniform travel.

DO NOT insert fingers between legrest components. Otherwise personal injury

may occur.

CAUTION

NEVER allow items to become trapped between the legrest assemblies. Otherwise

damage to the power legrests may occur.

Ensure that all parts of both power legrests are clear of any obstructions before

raising and lowering, otherwise damage to the power legrests may occur.

NOTE: For this procedure, refer to FIGURE 9.1 on page 105.

NOTE: Power legrests are linked to the recline function of the seating system. Operating the

recline function automatically operates power legs. Power legrests can also be operated

independently of the recline function.

SECTION 9—POWER ELEVATING LEGRESTS

Part No 1114842 105 2G Tarsys®Powered Seating System

Installing the Power Elevating Legrests

1. Turn power legrest to side (open footplate is perpendicular to wheelchair) and

position the mounting pin on the legrest with mounting holes on the seat frame

(Detail “A”).

2. Insert the mounting pin of power legrest into the mounting hole of the seat frame

(Detail “A”).

NOTE: Make sure the legrest sits flush on the seat frame.

3. Rotate the power leg toward the inside of the wheelchair until it locks in place.

NOTE: The footplate will be on the inside of the wheelchair when locked in place.

4. Repeat STEPS 1-3 for the opposite legrest.

5. Connect the power legrest connectors (Detail “B”).

6. If necessary, adjust powered legs. Refer to Adjusting the Power Elevating Legrests on

page 106.

Removing the Power Elevating Legrests

1. Disconnect power legrest connectors.

2. Push powered legrest release handle toward the opposite side of the wheelchair and

swing legrest to the outside of the wheelchair.

3. Lift up powered legrest and remove from wheelchair.

4. Repeat STEPS 1-3 for opposite power legrest.

FIGURE 9.1 Installing/Removing the Power Elevating Legrests

Calf Pad

Footplate

Legrest Release

Handle

DETAIL “A” DETAIL “B”

Power Legrest

Connectors

Mounting

Hole Mounting Pin

SECTION 9—POWER ELEVATING LEGRESTS

2G Tarsys®Powered Seating System 106 Part No 1114842

Adjusting the Power Elevating Legrests

Adjusting the Footplate

 WARNING

DO NOT remove heel loops without providing some other adequate means of

support, otherwise personal injury may occur.

Adjusting the Footplate Height

NOTE: For this procedure, refer to FIGURE 9.2.

NOTE: The following procedure should be performed with the user in the wheelchair.

NOTE: T-nuts ride in the channels of the exterior/interior rails of the power legrests.

1. Loosen, but DO NOT remove, the two interior button screws that secure the footplate

assembly to the T-nuts.

2. Loosen, but DO NOT remove, the two exterior button screws that secure the footplate

assembly to the T-nuts.

3. Loosen, but DO NOT remove, the two button screws that secure the heel loop to the

T-nuts.

4. Slide footplate assembly up or down, until desired height is achieved.

5. While holding footplate assembly in position, tighten all six button screws that were

loosened in STEPS 1-3.

6. Repeat STEPS 1–5 for opposite footplate if necessary.

FIGURE 9.2 Adjusting the Footplate Height

Exterior Rail

Channel

T-Nuts (Not Shown)

Footplate

Assembly

Exterior

Button Screws

Outside View Inside View

Channel

T-Nuts (Not Shown)

Footplate Assembly Interior Button

Screws

Button Screws

for Heel Loop

SECTION 9—POWER ELEVATING LEGRESTS

Part No 1114842 107 2G Tarsys®Powered Seating System

Adjusting the Footplate Depth

NOTE: For this procedure, refer to

FIGURE 9.3.

1. Remove the two flat head screws and

the two barrel nuts that secure the

footplate to the footplate clamp.

2. Reposition the footplate on the

footplate clamp.

3. Align the depth adjustment holes on

the footplate to the mounting holes on

the footplate clamp. FIGURE 9.3 Adjusting the Footplate Depth

4. Insert the barrel nuts through the bottom of the footplate clamp.

5. Install the two flat head screws through the footplate and footplate clamp.

6. Securely tighten with two barrel nuts.

7. Repeat STEPS 1-6 for opposite footplate if necessary.

Adjusting the Footplate Angle

NOTE: For this procedure, refer to FIGURE 9.4 on page 108.

1. Loosen, but DO NOT remove, the two flat head screws and the two barrel nuts that

secure the footplate to the footplate clamp. Refer to Detail “A”.

2. Rotate the footplate clamp on the pivot hinge until the desired angle is achieved. Refer

to Detail “B”.

3. Securely tighten footplate to footplate clamp and hinge pivot with the two flat head

screws and barrel nuts.

4. Repeat STEPS 1-3 for opposite side if necessary.

5. For additional angle adjustment, perform the following:

A. Loosen the set screw.

B. Rotate footplate up or down to desired position.

C. Retighten set screw.

Footplate Clamp

Flat Head Screws

Depth

Adjustment

Holes

Barrel Nuts

Footplate

Mounting Holes

SECTION 9—POWER ELEVATING LEGRESTS

2G Tarsys®Powered Seating System 108 Part No 1114842

FIGURE 9.4 Adjusting the Footplate Angle

Adjusting the Calf Pad

Adjusting the Calf Pad Width

NOTE: For this procedure, refer to FIGURE 9.5.

1. Remove the two button head screws from the calf pad and calf pad bracket.

2. Reposition calf pad to calf pad bracket to desired mounting position.

3. Align button head screws to mounting holes on calf pad and calf pad bracket.

4. Install button head screws into calf pad bracket and calf pad. Securely tighten.

5. Repeat STEPS 1-4 for opposite side, if necessary.

FIGURE 9.5 Adjusting the Calf Pad Width

DETAIL “A” DETAIL “B”

Direction of

Rotation

Set Screw

Barrel Nuts

Footplate

Clamp

Footplate

Flat Head

Screws

Footplate

Footplate

Clamp Pivot Hinge

Back View

of Legrest

Calf Pad Bracket

Calf Pad

Mounting

Holes

Button

Head

Screws

Calf Pad

Button

Head

Screws

Calf Pad Bracket

Mounting

Holes

SECTION 9—POWER ELEVATING LEGRESTS

Part No 1114842 109 2G Tarsys®Powered Seating System

Adjusting the Calf Pad Depth

NOTE: For this procedure, refer to

FIGURE 9.6.

1. Loosen, but DO NOT remove, depth

adjustment bracket mounting screws.

2. Slide calf pad assembly up and out of

the mounting channel.

3. Remove the flat head socket screw and

locking hex nut that secure the calf

bracket to the depth adjustment

bracket.

4. Reposition the calf bracket on the depth

adjustment bracket to desired position.

5. Install the flat head socket screw

through the calf bracket, depth

adjustment bracket and locking

hex nut. FIGURE 9.6 Adjusting the Calf Pad Depth

6. Tighten locking hex nut until snug. DO NOT overtighten nut or calf pad will not pivot

properly.

7. Align the two T-nuts on depth adjustment bracket assembly with channel on legrest.

8. Slide calf pad assembly to desired height. Tighten the two hex mounting screws

securely.

9. Repeat STEPS 1-6 for opposite side.

Adjusting the Calf Pad Height

NOTE: For this procedure, refer to FIGURE 9.7.

1. Loosen, but DO NOT remove, the two

hex head screws that secure depth

adjustment bracket to the T-nuts.

2. Slide the calf pad assembly with T-nuts

up or down in the channel to desired

position.

3. Holding the calf pad assembly into

position, tightly secure the hex screws

to the T-nuts.

4. Repeat STEPS 1-3 for opposite side, if

necessary.

FIGURE 9.7 Adjusting the Calf Pad Height

Mounting

Channel

Depth

Adjustment

Holes

Flat Head

Mounting

Screw

Locking

Hex

Nut

Calf

Bracket

Depth

Adjustment

Bracket

Depth

Adjustment

Bracket Hex

Head Screws

NOTE: Calf pad not shown for clarity.

T-Nuts

Hex Head

Screws

(T-Nuts

are NOT

SHOWN)

Depth

Adjustment

Bracket

Channel

Outer Rail

SECTION 9—POWER ELEVATING LEGRESTS

2G Tarsys®Powered Seating System 110 Part No 1114842

Adjusting the Length of Power Legrest

NOTE: For this procedure, refer to FIGURE 9.8.

1. Loosen, but DO NOT remove, the

length adjustment button screw (screw

also secures lower end of shroud).

2. Slide footplate with outer cover up or

down to desired position.

3. Securely tighten length adjustment

button screw.

4. Repeat STEPS 1-3 for remaining legrest.

FIGURE 9.8 Adjusting the Length of Power

Legrest

Removing/Installing the Power Elevating Legrest

Harness

NOTE: For this procedure, refer to FIGURE 9.9 on page 111.

Removing

1. Unplug the power elevating legrest connectors.

2. Unplug the harness from the TRCM.

3. Cut the tie-wraps securing the harness to the lower seat shroud (Detail “A”).

4. Remove the hook and loop fastening strips securing the harness to the underside of

the lower seat shroud.

5. Remove the two cap screws and locknuts securing the harness connector to the

harness wire bracket.

6. Remove the harness from the seating system.

Installing

1. If power legrests were not previously installed, perform the following steps:

A. Install the socket screw through the half clamp and harness wire bracket.

B. Position the half clamp with harness wire bracket onto the seat frame.

C. Install the locknut onto the socket screw to secure the half clamp to the seat frame.

D. Repeat STEPS A-C for the opposite side of the wheelchair.

Outer

Cover

Button

Screw

NOTE: Length

adjustment is

from 15½ - 20

inches.

SECTION 9—POWER ELEVATING LEGRESTS

Part No 1114842 111 2G Tarsys®Powered Seating System

2. Secure the power elevating legrest connector to the harness wire bracket using the two

cap screws and locknuts.

3. Tie-wrap the harness to the lower seat shroud (Detail “A”).

4. Secure the harness to the lower seat shroud using hook and loop fastening strips.

5. Plug the harness into the TRCM 2-pin Anderson connector.

6. Repeat STEPS 2-5 for the opposite side of the wheelchair.

7. Install the power elevating legrests. Refer to Installing/Removing the Power Elevating

Legrests on page 104.

FIGURE 9.9 Removing/Installing the Power Elevating Legrest Harness

DETAIL “A” - TIE-WRAPS AND FASTENING STRIPS

Power Legrest

Connectors

Anderson 2-Pin

Connector (To TRCM)

Tie-Wraps

Tie-Wraps

Lower Seat Shroud

Hook and Loop

Fastening Strips

Hook and Loop

Fastening Strip

Hook and Loop

Fastening Strip

To Left Power Elevating

Legrest

To Right Power

Elevating Legrest

To TRCM

To TRCM

Cap Screws

Locknuts

Harness

Connector

Harness Wire Bracket

Socket Screw

Half Clamp

Seat Frame

SECTION 9—POWER ELEVATING LEGRESTS

2G Tarsys®Powered Seating System 112 Part No 1114842

Removing/Installing the Power Elevating Legrest

Actuator

NOTE: For this procedure, refer to FIGURE 9.10 on page 113.

Removing

1. Remove the power elevating legrest from the wheelchair. Refer to

Installing/Removing the Power Elevating Legrests on page 104.

2. Remove the long shoulder screw, flat washer, washer and locknut securing the top of

the power elevating legrest actuator to the power legrest bracket.

3. Remove the short shoulder screw and locknut securing the actuator rod to the actuator

bracket.

4. Remove the power elevating legrest actuator from the legrest.

Installing

1. Unscrew the actuator rod one half turn.

2. Secure the actuator rod to the actuator bracket using the short shoulder screw and

locknut.

3. Secure the top of the power elevating legrest actuator to the power legrest bracket

using the long shoulder screw, flat washer, washer and locknut.

NOTE: The shoulder screw should be on the inside of the legrest and the locknut should be toward

the outside of the legrest.

4. Install the power elevating legrest. Refer to Installing/Removing the Power Elevating

Legrests on page 104.

5. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

SECTION 9—POWER ELEVATING LEGRESTS

Part No 1114842 113 2G Tarsys®Powered Seating System

FIGURE 9.10 Removing/Installing the Power Elevating Legrest Actuator

Power Elevating Legrest Actuator

Short Shoulder Screw

Locknut

Actuator Rod

Actuator Bracket

Long Shoulder

Screw

Flat Washer

Washer

Locknut

Power Legrest Bracket NOTE: Rear of

right power

elevating legrest

shown. Left

legrest actuator

mounts in the

same way.

Outside of

Legrest

Inside of

Legrest

SECTION 10—ARMS

2G Tarsys®Powered Seating System 114 Part No 1114842

SECTION 10—ARMS

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Make sure armrests are locked securely in place before using the wheelchair.

Pinch points exist on the armrests.

Removing/Installing Reclining Armrests

NOTE: For this procedure, refer to FIGURE 10.1 on page 115.

Removing Armrests

1. Lift the armrest release lever at the front of the wheelchair to the unlocked (horizontal)

position.

2. Lift the armrest and remove from the front arm socket.

3. Press the release button at the rear of the armrest.

4. While holding the release button in, remove the armrest from the seat frame.

Installing Armrests

1. Position the armrest on the seat frame as shown in FIGURE 10.1.

2. Press the release button at the rear of the armrest.

3. While holding the release button in, slide the armrest onto the seat frame.

4. Make sure the armrest release lever is in the unlocked (horizontal) position.

5. Install the armrest into the front socket.

6. Push the armrest release lever down into the locked (vertical) position.

SECTION 10—ARMS

Part No 1114842 115 2G Tarsys®Powered Seating System

FIGURE 10.1 Removing/Installing Reclining Armrests

Adjusting Armrest Height

NOTE: For this procedure, refer to FIGURE 10.2 on page 116.

1. Make sure the seating system is in the full upright position.

2. Remove the socket bolt and locknut that secure the front of the upper armrest to the

lower armrest.

3. Loosen, but DO NOT remove, the two socket screws and T-nuts that secure the rear of

the recliner armrest to the back cane.

4. Refer to the chart below and adjust the armrest to the desired height for the user.

*NOTE: Front armrest mounting holes are numbered from bottom to top for reference only. There

are no numbers on the armrests.

5. Reinstall the socket bolt through the mounting hole determined in STEP 4.

6. Reinstall the locknut and tighten securely.

7. While holding the armrest level, tighten the two socket screws and T-nuts securely.

8. Repeat STEPS 2-7 for the opposite side if necessary.

*HOLE NUMBER 123456

ARMREST HEIGHT (IN INCHES) 111213141516

Armrest

Release Lever

Release Button

Locked

(DOWN -

VERTICAL)

Unlocked

(UP -

HORIZONTAL)

SECTION 10—ARMS

2G Tarsys®Powered Seating System 116 Part No 1114842

FIGURE 10.2 Adjusting Armrest Height

Installing/Removing Flip-Back Armrests

 WARNING

Make sure the flip-back armrest release and height adjustment levers are in the

locked position before using the wheelchair.

NOTE: For this procedure, refer to FIGURE 10.3 on page 117.

NOTE: Flip-back armrest release lever MUST be in the unlocked (up-horizontal) position when

placing the armrest into the arm sockets.

Installing

1. Visually inspect to ensure flip back armrest release lever is in the unlocked

(up-horizontal) position (Detail “C”).

2. Slide the flip-back armrest into the arm sockets on the seat frame.

3. Install the quick-release pin through the rear arm socket and flip-back armrest.

4. Lock the flip-back armrest by pressing the flip-back armrest release lever into the

down (vertical) position (Detail “C”).

5. Connect joystick cable to joystick connector. Refer to FIGURE 10.3, Detail “A.”

6. Attach the cable to the back cane with a tie-wrap (not shown).

7. Repeat STEPS 1-6 for the opposite flip-back armrest.

Armrest

Socket Bolt

Height Adjustment Holes

Locknut

Back Cane

Socket

Screws/T-Nuts

SECTION 10—ARMS

Part No 1114842 117 2G Tarsys®Powered Seating System

FIGURE 10.3 Installing/Removing Flip-Back Armrests

Removing

1. Disconnect joystick. Refer to Detail “A.”

2. Cut the tie-wrap attaching the joystick cable to the back cane (not shown).

3. Unlock the flip-back armrest by positioning the flip-back armrest release lever into the

up (horizontal) position. Refer to Detail “C”.

4. Remove the quick-release pin that secures the flip-back armrest to the rear arm socket.

5. Pull on the flip-back armrest and remove the armrest from the arm sockets.

6. Repeat STEPS 3-5 for the opposite flip-back armrest, if necessary.

Locked

(Down -

Vertical)

Unlocked

(Up - Horizontal)

Flip Back

Armrest

Release Lever

Flip Back

Armrest

Rear

Arm

Socket

Quick-

Release

Pin

Seat

Frame

Front

Arm

Socket

DETAIL “A”

Joystick

Connector

Connector

Cable

DETAIL “B” Toggle

Switch

Bolts

DETAIL “C”

SECTION 10—ARMS

2G Tarsys®Powered Seating System 118 Part No 1114842

Adjusting Flip-Back Armrest Height

NOTE: For this procedure, refer to FIGURE 10.4.

1. Unlock top of flip back armrest by pulling height adjustment lever into the up

(horizontal) position.

2. Adjust top of the flip back armrest to the desired height.

3. Lock top of flip back armrest by pushing height adjustment lever into the down

(vertical) position.

NOTE: The arm is not locked until an audible “click” is heard.

FIGURE 10.4 Adjusting Flip-Back Armrest Height

Flip Back Armrest

Release Lever

Height

Adjustment

Lever

Flip Back

Armrest

Front Arm

Socket

Unlocked

(UP - HORIZONTAL)

Locked

(DOWN - VERTICAL)

SECTION 11—CENTER MOUNT FOOTRESTS

Part No 1114842 119 2G Tarsys®Powered Seating System

SECTION 11—CENTER MOUNT

FOOTRESTS

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

NOTE: For complete operating information on Invacare footrests, refer to the TDX Owner's

Manual, part number 1114809, supplied for the base of the wheelchair.

Removing/Installing the Center Mount Footrest

NOTE: For this procedure, refer to FIGURE 11.1.

Removing

1. Remove the rigging pivot pin that

secures the footrest to the mounting

bracket of the seat frame.

2. Hold the footrest with one hand and

engage the release lever with the other

while simultaneously pulling the

center mount footrest out of the

mounting bracket of the seat frame.

Installing

1. Engage the release lever with one hand,

hold the center mount footrest with the

other, and insert the center mount

footrest into the mounting bracket of

the seat frame.

2. Reinstall the rigging pivot pin to secure

the center mount footrest to the

mounting bracket of the seat frame.

FIGURE 11.1 Removing/Installing the

Center Mount Footrest

Seat Frame

Rigging Pivot

Pin

Release Lever

Center Mount

Footrest

Mounting Bracket

of Seat Frame

SECTION 11—CENTER MOUNT FOOTRESTS

2G Tarsys®Powered Seating System 120 Part No 1114842

Adjusting the Height of the Center Mount Footrest

 WARNING

After adjusting the Center Mount Footrest, minimum ground clearance for the

footrest in the driving position is three inches. If the Center Mount Footrest is in the

retracted position and the wheelchair is not moving, the footrest must maintain a

minimum of one inch ground clearance. Otherwise personal injury and damage may

result.

NOTE: For this procedure, refer to FIGURE 11.2.

1. Remove the two mounting screws that secure the footrest extension tube to the

extension tube housing.

2. If adjusting to one of the three shortest settings for footrest height, remove the

retaining ring on the angle adjustment pin and slide it out.

3. Adjust the footrest extension tube to the desired height and align the corresponding

holes to the mounting holes on the extension tube housing.

4. If adjusting to one of the three shortest settings for footrest height, install the angle

adjustment pin and the retaining ring.

5. Reinstall the two mounting screws to secure the footrest extension tube to the

extension tube housing. Securely tighten.

6. Repeat STEPS 1-5 for the other extension tube.

FIGURE 11.2 Adjusting the Height of the Center Mount Footrest

Release Lever

Seat Frame

Extension Tube Housing

Height Adjustment Holes

Mounting Screws

Extension Tube Mounting Holes

Extension Tube

Retaining Ring

Angle Adjustment Pin

SECTION 11—CENTER MOUNT FOOTRESTS

Part No 1114842 121 2G Tarsys®Powered Seating System

Adjusting the Angle of the Center Mount Footrest

 WARNING

After adjusting the Center Mount Footrest, minimum ground clearance for the

footrest in the driving position is three inches. If the Center Mount Footrest is in the

retracted position and the wheelchair is not moving, the footrest must maintain a

minimum of one inch ground clearance. Otherwise personal injury and damage may

result.

NOTE: For this procedure, refer to FIGURE 11.2 and FIGURE 11.3.

1. Engage the release lever with one hand (FIGURE 11.2) and move the center mount

footrest to the desired angle with the other hand (FIGURE 11.3).

2. Disengage the release lever to lock the center mount footrest in the new position.

FIGURE 11.3 Adjusting the Angle of the Center Mount Footrest

Adjusting the Center Mount Footplate Angle

After 2/14/07

NOTE: For this procedure, refer to FIGURE 11.4.

1. Loosen, but DO NOT remove, the two

rear mounting screws and side mounting

screw.

2. Move the footplate to the desired angle.

3. Tighten the two rear mounting screws

and side mounting screw to secure the

footplate in the desired position.

4. Repeat STEPS 1 and 2 for the other

footplate. FIGURE 11.4 Adjusting the Center Mount

Footplate Angle - After 2/14/07

Footplate

Center

Mount

Footrest

Center Mount

Front Rigging

Footplate

Side Mounting

Screw

Rear Mounting

Screws

SECTION 11—CENTER MOUNT FOOTRESTS

2G Tarsys®Powered Seating System 122 Part No 1114842

Before 2/15/07

NOTE: For this procedure, refer to FIGURE 11.5.

1. Loosen, but DO NOT remove, the

footplate mounting screw.

2. Move the footplate to the desired angle.

3. Tighten the footplate mounting screw to

secure the footplate in the desired

position.

4. Repeat STEPS 1 and 2 for the other

footplate. FIGURE 11.5 Adjusting the Center Mount

Footplate Angle - Before 2/15/07

Adjusting the Tension of the Center Mount Footplate

NOTE: For this procedure, refer to FIGURE 11.6.

NOTE: The tension can be adjusted to increase or

decrease the rotation effort of the flip up footplates.

1. Loosen the mounting screw on the

footrest angle hinge to decrease the

rotation effort.

NOTE: DO NOT remove the mounting screw.

2. Tighten the footrest angle hinge

mounting screw to increase the rotation

effort.

3. Repeat STEPS 1 and 2 for the other

footplate.

FIGURE 11.6 Adjusting the Tension of the

Center Mount Footplate

Removing/Installing the Release Lever Assembly

NOTE: For this procedure, refer to FIGURE 11.7 on page 123.

1. Remove the mounting screw that secures the side shroud in place.

2. Secure the ratchet housing to the mounting bracket on the seat frame with the mounting

screw and locknut provided. Securely tighten.

3. Secure the release handle to the seat frame with the mounting screw, spacer and square

nut provided. Securely tighten.

4. Tie-wrap cable as shown in Detail “A”. Leave enough slack in the cable to loop around the

mounting screw that secures the side shroud in place.

5. Secure the side shroud in place with existing mounting screw. Securely tighten.

Center Mount

Footrest

Footplate

Footplate

Mounting

Screw

Footplate

Footrest Angle Hinge

Mounting Screw

Footrest Angle Hinge

Center Mount

Footrest

SECTION 11—CENTER MOUNT FOOTRESTS

Part No 1114842 123 2G Tarsys®Powered Seating System

FIGURE 11.7 Removing/Installing the Release Lever Assembly

Mounting

Bracket

Locknut

Ratchet Housing Mounting Screw

Square Nut

Spacer

Mounting Screw

Seat Frame

Release Handle

DETAIL “A”

Tie-Wrap the Cable Here

Ratchet Housing

NOTE: Side shroud

omitted for clarity.

Seat Frame

SECTION 12—HEADREST

2G Tarsys®Powered Seating System 124 Part No 1114842

SECTION 12—HEADREST

 WARNING

After ANY adjustments, repair or service and BEFORE use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Removing/Installing/Adjusting Headrest

NOTE: For this procedure, refer to FIGURE 12.1.

Removing

1. Loosen, but DO NOT remove, the thumb screw that secures the headrest to the

headrest mounting bracket.

2. Remove the headrest from the headrest mounting bracket.

Installing

1. Make sure thumb screw is loose.

2. Install the headrest until the headrest stop sits on the headrest mounting bracket.

3. If necessary, adjust the height, depth or direction of the headrest. Refer to Adjusting

Headrest Height on page 125.

FIGURE 12.1 Removing/Installing/Adjusting Headrest

Depth

Adjustment

Offset Fixture

Slide Tube

Socket Screws

Height Adjustment

Thumb Screw

Headrest Mounting Bracket Headrest Stop

Set Screw

SECTION 12—HEADREST

Part No 1114842 125 2G Tarsys®Powered Seating System

Adjusting Headrest Height

1. Loosen the set screw on the headrest stop.

2. Loosen, but DO NOT remove, the thumb screw that secures the headrest to the

headrest mounting bracket.

3. Position the headrest to the desired height.

4. Tighten the thumb screw that secures the headrest to the headrest mounting bracket.

5. Tighten the set screw on the headrest stop.

6. If necessary, adjust the depth or direction of the headrest. Refer to Adjusting Headrest

Depth/Direction below.

Adjusting Headrest Depth/Direction

1. Loosen, but DO NOT remove, the three socket screws that secure the offset fixture to

the slide tube.

2. If necessary, reposition the headrest to the desired depth by sliding the headrest

towards the front of the wheelchair or towards the rear of the wheelchair.

3. If necessary, reposition the headrest to the desired position (headrest will move in any

direction).

4. While holding the headrest in the desired position, securely tighten the three socket

screws.

5. If necessary, adjust the height of the headrest. Refer to Adjusting Headrest Height

above.

Replacing Headrest

NOTE: For this procedure, refer to FIGURE 12.2.

1. Remove the three socket screws that

secure the headrest to the headrest

mounting bracket.

2. Position the new headrest on the

headrest mounting bracket and secure

with the existing three socket screws.

3. If necessary, adjust the height, depth or

direction of the headrest. Refer to

Adjusting Headrest Height above.

FIGURE 12.2 Replacing Headrest

Headrest Mounting

Bracket

Socket

Screw Headrest

NOTE: One style of headrest shown

for clarity. Both styles of headrest

attach the same way.

SECTION 13—TILT AND RECLINE

2G Tarsys®Powered Seating System 126 Part No 1114842

SECTION 13—TILT AND RECLINE

 WARNING

After ANY adjustments, repair or service and before use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

A Note About Drive Lock-Out

 WARNING

NEVER operate the wheelchair while in any tilted/reclined/back angle position over

20° relative to the vertical position. If the drive lock-out does not stop the

wheelchair from operating in a tilt position over 20° relative to the vertical position,

DO NOT operate the wheelchair. DO NOT attempt to adjust the drive lock-out.

Have the wheelchair serviced by a qualified technician.

The wheelchair user MUST have a clear line of sight to drive safely. On initial chair

delivery and after adjusting the back angle, drive lock-out switch, tilt system or

recline system, tilt and recline the seat back to the farthest driving position

immediately before drive lock-out engages and ensure there is a clear line of sight

present in which to drive the wheelchair. If a clear line of sight is not present, have

the back angle repositioned or readjust the lockout angle such that safe driving with

a clear line of sight is achieved. Otherwise injury or damage may occur.

The LED on the single function toggle switch will light when the drive lock-out feature

has been activated. Drive lock-out is a feature designed to prevent the wheelchair from

being driven after the seating system has been tilted or reclined beyond 20°* relative to

the vertical position. The back can be positioned at a 10° relative offset to the seat base,

thereby resulting in a back angle potential of 30° before which the drive lock-out is

activated. This may affect the wheelchair user’s line of sight while driving. Make sure the

wheelchair user can see properly to ensure safe driving.

*NOTE: 20° back angle can be any combination of recline, tilt and/or surface angle.

NOTE: Refer to Typical Product Parameters on page 12 for tilt and/or recline angle ranges.

SECTION 13—TILT AND RECLINE

Part No 1114842 127 2G Tarsys®Powered Seating System

Operating Powered Seating Systems

 GENERAL WARNINGS

Refer to A Note About Drive Lock-Out on page 126 before performing this

procedure.

Pinch points may occur when returning the seat from any tilted position to the full

upright position. Make sure the hands and body of both the occupant and

attendants/bystanders are clear of all pinch points before returning the seat to the

full upright position.

Use caution when driving in a tilted or reclined position.

DO NOT operate the seating system while on an incline.

DO NOT operate the seating system while the wheelchair is moving.

DO NOT operate the tilt function near or under a fixed object such as a table or

desk.

CAUTION

DO NOT operate the recline function of the seating system if one or both of the

mechanical elevating legrest push rods are bent. Damage to the seating system can

occur.

Use only the actuator controls listed in the following chart to activate the tilt/recline

functions. DO NOT use any other actuator controls. Such devices may result in

excess heating and cause damage to the actuator and associated cables and could

cause a fire, death, physical injury or property damage. If such devices are used,

Invacare shall not be liable and the limited warranty is void.

NOTE: For this section, refer to FIGURE 13.1 on page 128.

SEATING SYSTEM ACTUATOR CONTROL

TRSS TRCM SAC TAC

TILT ONLY YYYY

TILT ONLY WITH POWER ELEVATING LEGRESTS NYNN

RECLINE ONLY NYNY

RECLINE ONLY WITH POWER ELEVATING LEGRESTS NYNN

TILT/RECLINE NYNN

SECTION 13—TILT AND RECLINE

2G Tarsys®Powered Seating System 128 Part No 1114842

FIGURE 13.1 Operating Powered Seating Systems

Single Function Toggle Switch (TRSS)

NOTE: For this procedure, refer to FIGURE 13.2.

1. Make sure the wheelchair is on a level surface.

2. Refer to the chart which follows for the operation of the seating system using a single

function toggle switch mounted on the right side of the wheelchair:

3. Release single function toggle switch to neutral position.

FIGURE 13.2 Single Function Toggle Switch (TRSS)

SEATING SYSTEM SINGLE FUNCTION TOGGLE SWITCH

FORWARD BACK

TILT ONLY Increase Tilt Angle Decrease Tilt Angle

RECLINE ONLY Increase Recline Angle Decrease Recline Angle

DETAIL “A” - FULL UPRIGHT POSITION DETAIL “B” - FULL TILT POSITION

DETAIL “C” - FULL RECLINE POSITION DETAIL “D” - TILT/RECLINE COMBINATION

LED

Single Function

Toggle Switch

SECTION 13—TILT AND RECLINE

Part No 1114842 129 2G Tarsys®Powered Seating System

Optional Four-Way Toggle Switch

NOTE: For this procedure, refer to FIGURE 13.3.

1. Make sure the wheelchair is on a level surface.

2. Refer to the charts which follow for the operation of the seating system using a

four-way toggle switch:

NOTE: The charts which follow show the factory programmed settings only. Switch assignments

can be reprogrammed.

NOTE: If the wheelchair is equipped with switch options, scan to the correct ECU or Auxiliary

Mode and activate the control device in the corresponding “forward” direction to operate the tilt

function. Refer to MK5 EX and MK5 TT-EX Electronics Service Manual, part number 1114808,

for complete switch option operating instructions.

3. Release four-way toggle switch to neutral position.

FIGURE 13.3 Optional Four-Way Toggle Switch

SEATING SYSTEM FOUR-WAY TOGGLE SWITCH

FORWARD REAR LEFT RIGHT

Tilt Only Increase/Decrease

the Tilt Angle* N/A N/A

Power Legrest

Up/Down*

Recline Only

N/A

Increase/Decrease

the Recline Angle*

Increase/Decrease

the Back Height

(VSR)*

Power Legrest

Up/Down*

Tilt/Recline

Increase/Decrease

the Tilt Angle*

Increase/Decrease

the Recline Angle

Increase/Decrease

the Back Height

(VSR)*

Power Legrest

Up/Down*

*NOTE: The four-way toggle switch will alternate functions (increase tilt angle, decrease tilt

angle) after it has been released to the neutral position for a minimum of three seconds. Refer to

MK5™ EX™ and MK5 TT-EX ELECTRONICS Service Manual, part number 1114808 for

complete four-way toggle switch operating instructions.

LED

Left

Forward

Rear

Four-Way Toggle Switch

Right

SECTION 13—TILT AND RECLINE

2G Tarsys®Powered Seating System 130 Part No 1114842

Vernier Shear Reduction (2G Tarsys Systems Only)

NOTE: For this procedure, refer to FIGURE 13.3 on page 129.

About Vernier Shear Reduction

 WARNING

The relationship between Vernier Shear Reduction (VSR) and the recline function

of the seating system is dependant on the needs of the user and MUST be set and

adjusted by a trained qualified technician.

Vernier Shear Reduction (VSR) moves the back of the seating system along with the

recline function. VSR reduces shear between the user and the seating system as the

seating system reclines.

NOTE: VSR is electronically linked to the recline function of the seating system and operating the

recline function automatically activates VSR.

VSR function can also be used independently from the recline function to allow for a

change in seating position or access to additional seating system options. Refer to Using

Vernier Shear Reduction (VSR) Independently of Recline Function on page 130.

Using Vernier Shear Reduction (VSR) Independently of Recline Function

 WARNING

The back of the seating system MUST be returned to original position before the

degree of recline is changed (increased or decreased). Otherwise, the relationship

between VSR and the recline function of the seating system will change, possibly

resulting in injury to the user.

1. Make sure the wheelchair is on a level surface.

2. Note the current position of the back.

3. Push four-way toggle switch toward the left of the wheelchair until the desired VSR is

achieved.

NOTE: Left and right are determined by standing behind the wheelchair.

NOTE: The four-way toggle switch will alternate functions (move VSR actuator up, move VSR

actuator down) after it has been released to the neutral position for a minimum of one second.

NOTE: If the wheelchair is equipped with switch options, scan to the correct ECU or Auxiliary

Mode and activate the control device in the corresponding "left" direction to operate the tilt

function. Refer to MK5 EX and MK5 TT-EX Electronics Service Manual, part number 1114808,

for complete switch option operating instructions.

4. Return the back to the position noted in STEP 2 before changing the degree of recline.

SECTION 13—TILT AND RECLINE

Part No 1114842 131 2G Tarsys®Powered Seating System

Removing/Installing the Tilt Actuator

NOTE: For this procedure, refer to FIGURE 13.4 on page 132.

Removing

1. Tilt the seat back until the front of the actuator is visible.

2. Turn the wheelchair power OFF.

3. Remove the rear shroud. Refer to Removing/Installing Rear Shroud on page 102.

4. Disconnect the existing tilt actuator connector from the TRCM tilt actuator connector.

5. Remove the shoulder bolt, two spacers and locknut that secure the rear of the existing

actuator to the rear pivot assembly.

 WARNING

Hold the seat frame while removing the front actuator hardware, otherwise injury

may occur.

6. While holding the seat frame, remove the shoulder bolt and locknut that secure the

existing actuator to the front pivot assembly.

7. Remove the existing actuator from the rear pivot assembly.

Installing

1. Position the tilt actuator on the rear pivot assembly as shown in FIGURE 13.4.

2. Line up the mounting holes in the rear of the actuator and the rear pivot assembly.

3. Install the shoulder bolt, two spacers and locknut that secure the rear of the actuator

to the rear pivot assembly. Securely tighten. Torque to 13 ft-lbs ± 20%. Refer to

FIGURE 13.4 for correct hardware orientation.

4. Line up the mounting holes in the front of the actuator and the front pivot assembly.

5. Install the shoulder bolt and locknut that secure the front of the actuator to the front

pivot assembly. Securely tighten. Torque to 13 ft-lbs ± 20%. Refer to FIGURE 13.4 for

correct hardware orientation.

6. Connect the tilt actuator connector to the TRCM tilt actuator connector.

7. Reinstall the rear shroud. Refer to Removing/Installing Rear Shroud on page 102.

8. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

SECTION 13—TILT AND RECLINE

2G Tarsys®Powered Seating System 132 Part No 1114842

FIGURE 13.4 Removing/Installing the Tilt Actuator

Removing/Installing the VSR Actuator

NOTE: For this procedure, refer to FIGURE 13.5.

Removing

1. Remove the VSR actuator shroud. Refer

to Removing/Installing VSR Shroud on

page 100.

2. Disconnect the VSR actuator connector

from the TRCM or TAC VSR actuator

connectors (Not shown).

3. Remove the hex bolt and locknut that

secure the existing VSR actuator to the

spreader bar.

NOTE: When the spreader bar is disconnected

from the VSR actuator, the back pan ASM may

slide out of position.

4. Remove the hex bolt, washers and

locknut that secure the existing VSR

actuator to the actuator mounting

bracket.

FIGURE 13.5 Removing/Installing the VSR

Actuator

Rear Pivot

Assembly

Locknut

Shoulder

Bolt

Rear of Tilt

Actuator

Shoulder

Bolt

Front of Tilt

Actuator

Tilt Actuator

Locknut

DETAIL “A”

DETAIL “B”

Front Pivot

Assembly

Spacers

Locknut

Spreader Bar

VSR Actuator Bracket

Locknut

Washers

Hex Bolt

Hex Bolt

VSR

Actuator

Connector

VSR

Actuator

SECTION 13—TILT AND RECLINE

Part No 1114842 133 2G Tarsys®Powered Seating System

Installing

1. Position the new VSR actuator on the back as shown in FIGURE 13.5.

2. Line up the mounting holes in the new VSR actuator and VSR actuator bracket.

3. Install the hex bolt, washers and locknut that secure the new VSR actuator to the VSR

actuator mounting bracket. Tighten securely. Torque to 75 ft-lbs ± 20%. Refer to

FIGURE 13.5 for hardware orientation.

4. Connect the VSR actuator connector to the TRCM or TAC VSR actuator connectors

(Not shown).

5. Reinstall the VSR actuator shroud. Refer to Removing/Installing VSR Shroud on

page 100.

6. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

Removing/Installing the Recline Actuator

NOTE: For this procedure, refer to FIGURE 13.6 on page 134.

Removing

1. Remove the locknut and screw that secure the front of the recline actuator to the seat

frame assembly.

2. Remove the four socket head screws and locknuts that secure the right and left

actuator brackets to the crossbeam.

3. Take note of the right and left actuator bracket orientations.

NOTE: The left and right brackets have long and short sides. The right and left brackets must be

put back correctly or range of motion will be lost.

4. Release the pins that secure the actuator brackets to the recline actuator.

5. Remove the recline actuator.

Installing

1. Secure the pins in the right and left actuator brackets to the recline actuator. Make sure

the orientation of each bracket is correct.

2. Install the right and left actuator brackets, with the recline actuator attached, to the

crossbeam assembly with the four socket head screws and locknuts.

3. Install the front of the recline actuator to the seat frame assembly with the locknut and

screw.

SECTION 13—TILT AND RECLINE

2G Tarsys®Powered Seating System 134 Part No 1114842

FIGURE 13.6 Removing/Installing the Recline Actuator

Testing the Actuators

1. Cycle each function of the seating system (tilt, recline, VSR, power legs) through the

full range of motion and observe the cables to make sure no cables are pinched,

crushed or pulled by the mechanisms.

2. Flip back armrests and observe the cables to make sure the joystick and/or switch

cables are free to move and not pulled.

3. Perform one of the following:

• If damage to the cables is found, replace the cables and re-route the new cables so

they DO NOT get damaged during wheelchair/seating system operation.

• If the cables are in danger of becoming damaged, re-route the cables to ensure

damage does not occur.

4. Secure the cables. Refer to Securing the Cables on page 157.

5. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

Recline

Actuator

Locknut

(1 of 4)

Screw

Actuator

Bracket

(1 of 2)

Socket Head

Screw

(1 of 4)

Locknut

Pin

Seat Frame Assembly

NOTE: The crossbeam is

shown removed for clarity.

Crossbeam

SECTION 13—TILT AND RECLINE

Part No 1114842 135 2G Tarsys®Powered Seating System

Removing/Installing Recline Links

NOTE: For this procedure, refer to FIGURE 13.7 on page 136.

Removing

1. Make sure the wheelchair is on a level surface.

2. Remove the batteries. Refer to the owner’s manual shipped with the wheelchair.

3. Remove the seat pan. Refer to Removing/Installing Seat Pan on page 54.

4. Remove the retaining ring and washer that secure the recline link to the pin of the seat

frame.

5. Remove the shoulder bolt and locknut that secure the recline link to the front pivot

assembly.

6. Remove the existing recline link.

Installing

1. Perform one of the following:

• For 15° recline - Secure the 10°/15° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 13.7

(Detail “A”).

• For 10° recline - Secure the 10°/15° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 13.7

(Detail “B”).

• For 5° recline - Secure the 0°/5° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 13.7

(Detail “C”).

• For 0° recline - Secure the 0°/5° recline link with the washer and a new retaining

ring to the pin in the mounting hole and orientation shown in FIGURE 13.7

(Detail “D”).

CAUTION

Be sure to use a new retaining ring that is not bent or damaged.

NOTE: When completed verify retaining ring is fully seated in the groove in the pin.

2. Secure the recline link to the front pivot assembly with the existing shoulder bolt and

locknut in the mounting hole shown in the respective details of FIGURE 13.7. Securely

tighten. Torque to 13 ft-lbs ± 20%. ‘

3. Repeat for opposite side.

4. Install the seat pan. Refer to Removing/Installing Seat Pan on page 54.

5. Install the batteries. Refer to the owner’s manual shipped with the wheelchair.

SECTION 13—TILT AND RECLINE

2G Tarsys®Powered Seating System 136 Part No 1114842

FIGURE 13.7 Removing/Installing Recline Links

Mounting hole

for 10° recline

Mounting hole

for 15° recline

Washer

*Retaining

Ring

*NOTE: Use new retaining ring.

DETAIL A: 10°/15° RECLINE LINK

Mounting hole

for 10° recline

Mounting hole

for 15° recline

Shoulder

Bolt

Front Pivot

Assembly

Locknut

10° and 15° Recline Link

Mounting hole for 5° recline

Mounting hole

for 0° recline

Washer

*Retaining

Ring

*NOTE: Use new retaining ring.

DETAIL B: 0°/5° RECLINE LINK

Mounting hole for 0° recline

Mounting hole

for 5° recline

Shoulder

Bolt

Front Pivot

Assembly

Locknut

0° and 5° Recline Link

Mounting Reclining Link to Center Seat Frame Mounting Reclining Link to Center Seat Frame

Mounting Reclining Link

to Front Pivot Assembly

Mounting Reclining Link

to Front Pivot Assembly

SECTION 13—TILT AND RECLINE

Part No 1114842 137 2G Tarsys®Powered Seating System

Removing/Installing Tilt Links

 WARNING

Remove the existing tilt link and install the new tilt link on one side of the

wheelchair at a time. Otherwise, injury or damage may occur.

NOTE: For this procedure, refer to FIGURE 13.8 on page 138.

Removing

1. Note the orientation of the tilt angle blocks for proper reinstallation.

2. Remove the locknut, bushing and shoulder bolt securing the tilt link to the front pivot

assembly.

3. Remove the retaining ring securing the flat washer, two nylon washers and the tilt link

to the center seat frame pin.

4. Remove the tilt link from the center seat frame pin.

Installing

1. Position one nylon washer, tilt link, one nylon washer, and flat washer onto the center

seat frame pin.

CAUTION

Be sure to use a new retaining ring that is not bent or damaged.

2. Secure the flat washer, two nylon washers and the tilt link to the center seat frame pin

using a new retaining ring.

3. Verify that the retaining ring is fully seated in the groove in the pin.

4. Install the shoulder bolt through the front pivot assembly, tilt link, front pivot

assembly, bushing and tilt angle block.

NOTE: The tilt angle block should be oriented as noted in STEP 1 of Removing on page 137. If

unsure of the orientation, refer to Adjusting Seat Angle on page 61.

5. Secure the tilt link, tilt angle block and bushing to the front pivot assembly using the

locknut. Torque to 23 ft-lbs ± 20%.

6. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

SECTION 13—TILT AND RECLINE

2G Tarsys®Powered Seating System 138 Part No 1114842

FIGURE 13.8 Removing/Installing Tilt Links

Shoulder Bolt

Shoulder Bolt

Bushing

Locknuts

Retaining

Ring

Flat Washer

Nylon

Washers

Tilt Link

Center Seat

Frame Pin

Front Pivot

Assembly

Tilt Angle Block

NOTE: Tilt Only center seat

frame shown for clarity.

Tilt/Recline systems install in

the same way.

SECTION 14—ELECTRONICS

Part No 1114842 139 2G Tarsys®Powered Seating System

SECTION 14—ELECTRONICS

 WARNING

After ANY adjustments, repair or service and before use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

After performing any of the procedures in this section, perform the post-service

inspection. Refer to Post-Service Inspection Checklist on page 21.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Use only the actuator controls listed in the following chart to activate the tilt/recline

functions. DO NOT use any other actuator controls. Such devices may result in

excess heating and cause damage to the actuator and associated cables and could

cause a fire, death, physical injury or property damage. If such devices are used,

Invacare shall not be liable and the limited warranty is void.

Removing/Installing the Single Actuator Control (SAC)

NOTE: For this procedure, refer to FIGURE 14.1 on page 141.

NOTE: The SAC is no longer available for replacement. If replacement is necessary, a TAC must

be installed. Refer to Removing/Installing the TAC or TRCM on page 141.

Removing

1. Turn the joystick off.

2. Remove the two thumb screws (not shown) that secure the rear shroud to the base.

3. Remove the rear shroud. Refer to Removing/Installing Rear Shroud on page 102.

4. Disconnect the SAC 5-pin connector from the MK5 controller (at the rear of the battery

box). Refer to Detail “B”.

5. Disconnect the SAC actuator connector (WHITE, 2-pin Anderson) from the tilt

actuator cable. Refer to Detail “B”.

SEATING SYSTEM ACTUATOR CONTROL

TRSS TRCM SAC TAC

TILT ONLY YYYN

TILT ONLY WITH POWER ELEVATING LEGRESTS NYNN

RECLINE ONLY NYNY

RECLINE ONLY WITH POWER ELEVATING LEGRESTS NYNN

TILT/RECLINE NYNN

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 140 Part No 1114842

6. Disconnect the auxiliary power connector of the SAC from the power take off

connector of the MK5 controller.

7. Disconnect the tilt potentiometer connector from the SAC 3-pin Molex connector.

8. Remove the two hex screws securing the half clamps to the armrest. Refer to

Detail “A”.

9. Remove the SAC and mounting hardware from the armrest.

NOTE: The mounting hardware includes the half clamps, mounting plate, hex screws and

mounting screws.

10. Remove the two mounting screws securing the SAC to the mounting plate.

11. Remove the SAC from the mounting plate.

Installing

1. Secure the SAC to the mounting plate using the two mounting screws.

2. If necessary, secure the mounting plate to the non-threaded half clamp using the two

hex screws.

3. Position the non-threaded half clamp onto the armrest.

4. Secure the threaded half clamp to the armrest by tightening the two hex screws.

5. Connect the SAC 5-pin connector to the MK5 controller (at the rear of the battery box).

6. Connect the SAC actuator connector (WHITE, 2-pin Anderson) to the tilt actuator

cable.

7. Connect the auxiliary power connectors.

8. Connect the tilt potentiometer connector to the SAC 3-pin Molex connector.

9. Secure the SAC cables. Refer to Securing the Cables on page 157.

10. Adjust the tilt potentiometer. Refer to Adjusting the Tilt Potentiometer on page 152.

11. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

12. Install the rear shroud. Refer to Removing/Installing Rear Shroud on page 102.

SECTION 14—ELECTRONICS

Part No 1114842 141 2G Tarsys®Powered Seating System

FIGURE 14.1 Removing/Installing the Single Actuator Control (SAC)

Removing/Installing the TAC or TRCM

NOTE: For this procedure, refer to FIGURE 14.2 on page 143 and FIGURE 14.3 on page 145.

NOTE: TAC stands for Two Actuator Control.

NOTE: TRCM stands for Tilt Recline Control Module.

Removing the TAC/TRCM Controller Bracket

Round Back Canes

1. Remove the two long hex screws and locknuts securing the controller bracket to the

upper bracket (Detail “C”).

Half Clamp

(Threaded)

Armrest

Half Clamp (Non-threaded)

Mounting Screws

Mounting Plate

SAC

Hex Screws

SAC

5-pin Connector

(To Controller)

Auxiliary Power Connector

Actuator Connector

(WHITE 2-pin Anderson) SAC Connector

(3-Pin Molex)

DETAIL “A”

DETAIL “B”

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 142 Part No 1114842

2. Remove the two short hex screws, washers and coved washers securing the upper

bracket to the back cane.

3. Remove the controller bracket with TAC/TRCM from the back cane.

Extruded Canes

1. Loosen the four hex screws that secure the spreader bar to the back canes.

2. Loosen the two hex screws and washers that secure the controller bracket to the T-nuts

and back cane.

3. Remove the T-nuts.

4. Remove the controller bracket with TAC/TRCM from the back cane.

Installing the TAC/TRCM Controller Bracket

Securing the Controller Bracket to the Back Cane

NOTE: For this procedure, refer to FIGURE 14.2 on page 143 and FIGURE 14.3 on page 145.

Round Back Canes

1. If necessary, install the TAC/TRCM onto the controller bracket. Refer to Installing the

TAC/TRCM onto the Controller Bracket on page 144.

2. If necessary, install the two short hex screws, washers and coved washers to secure the

upper bracket to the back cane (Detail “C”). Torque the hex screws to 75 in-lbs ± 20%.

3. Install the two long hex screws and locknuts to secure the controller bracket to the

upper bracket.

4. Program the TAC. Refer to Refer to Programming the TAC on page 146.

Extruded Canes

1. If necessary, install the TAC/TRCM onto the controller bracket. Refer to Installing the

TAC/TRCM onto the Controller Bracket on page 144.

2. Note the position of the existing spreader bar, by measuring from the top of the back

canes to the top of the spreader bar (Detail “B” of FIGURE 14.2 on page 143).

3. Note the position of the back pan, by measuring from the top of the back pan to the

top of the back canes.

4. Loosen, but DO NOT remove, the four hex screws that secure the existing spreader bar

to the back canes (Detail “A” of FIGURE 14.2 on page 143).

5. Lift up and remove the existing spreader bar, with T-nuts, from the slots on the back canes.

6. Loosely install the two hex screws and washers to secure the controller bracket to the

T-nuts (Detail “B” of FIGURE 14.3 on page 145).

7. Slide the T-nuts into the slots in the back cane.

SECTION 14—ELECTRONICS

Part No 1114842 143 2G Tarsys®Powered Seating System

8. Slide the controller bracket up/down on the back cane until the bottom of the

controller bracket is 1-inch ± ¼-inch above the top of the pivot arm (Detail “A”

FIGURE 14.3 on page 145).

9. Torque the hex screws to 75 in-lbs ± 20% to secure the controller bracket to the T-nuts

and back cane.

10. Align the T-nuts on the spreader bar with the slots in the back canes.

11. Slide the spreader bar to the position noted when removing the spreader bar (Detail

“A” of FIGURE 14.2).

12. Make sure the measurements shown in Detail “B” of FIGURE 14.2 and noted in STEP

2 are the same on both sides.

13. Tighten the four hex screws that secure the spreader bar to the back canes. Torque to

75 in-lbs ± 20%.

14. Program the TAC. Refer to Programming the TAC on page 146.

FIGURE 14.2 Controller Bracket

Hex

Screws/T-Nuts

(T-Nuts in Back

Cane Slot)

Spreader Bar

DETAIL “B”

VSR Actuator

Locknut

Hex Bolt

Back Pan ASM

NOTE A: Measurements from

the top of the back cane to the top

of the back pan MUST be equal.

NOTE B: Measurements from

the top of the back cane to the top

of the spreader bar MUST be

equal.

NOTE A

NOTE B

DETAIL “A”

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 144 Part No 1114842

Removing the TAC/TRCM from the Controller Bracket

1. Turn the joystick off.

2. Remove the rear shroud. Refer to Removing/Installing Rear Shroud on page 102

3. Disconnect the auxiliary power connectors.

4. Disconnect the tilt and/or recline potentiometers from the 3-pin Molex connectors.

5. Disconnect the tilt, recline, VSR and/or power legrest actuators from the 2-pin

Anderson connectors.

6. Disconnect the TRCM or TAC from the 9 pin sub D connector on the MK5 controller.

7. Remove the two Phillips screws securing the TRCM/TAC to the controller bracket

(Detail “B”).

8. Note the location of any tie-wraps securing the TRCM/TAC cables to the wheelchair

frame and/or other cables.

9. Cut any tie-wraps securing the TRCM/TAC cables to the wheelchair frame and/or

other cables.

Installing the TAC/TRCM onto the Controller Bracket

NOTE: For this procedure, refer to FIGURE 14.3 on page 145.

1. Secure the TAC to the controller bracket using the two mounting screws (Detail “B”).

2. Connect the tilt actuator to the 2-pin Anderson connector labeled “Tilt” on the TAC.

3. Connect the tilt potentiometer to the 3-pin Molex connector labeled “Tilt” on the TAC.

4. Connect the auxiliary power connector of the TAC to the power take off connector of

the MK5 controller.

5. Connect the TAC to the 5-pin connector on the MK5 controller.

6. Secure the controller bracket to the back cane. Refer to Securing the Controller Bracket

to the Back Cane on page 142.

7. Install the rear shroud. Refer to Removing/Installing Rear Shroud on page 102

SECTION 14—ELECTRONICS

Part No 1114842 145 2G Tarsys®Powered Seating System

FIGURE 14.3 Removing/Installing the TAC or TRCM

9-pin Sub D

Accessory

Connector

Left Power Legrest

Actuator Connector

(2-pin Anderson)

Right Power Legrest

Actuator Connector

(2-pin Anderson)

VSR Actuator Connector

(2-pin Anderson)

Tilt Actuator Connector

(2-pin Anderson)

Recline Actuator

Connector

(2-pin

Anderson)

Recline Potentiometer

Connector (3-pin Molex)

5-pin

Connector to

MK5

Controller

Auxiliary Power

Connector

Tilt Potentiometer

Connector (3-pin Molex)

TAC/TRCM

Description

DETAIL “A” - POSITIONING MOUNTING

BRACKET ON EXTRUDED CANES

TRCM/TAC

TRCM/TAC

Controller Bracket

Pivot Arm

1-inch ± ¼-inch

TRCM/TAC

Controller Bracket

DETAIL “B”

DETAIL “C”

Hex Screw

Washer

T-Nut

Extruded

Back

Cane

Mounting Screw

Controller

Bracket

Round

Back

Cane

Coved

Washer

Washer

Short Hex Screw

Long

Hex

Screws

Upper Bracket

Locknut

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 146 Part No 1114842

Programming the TAC

1. Connect the remote programmer into the front face of the TAC.

2. Press the Power button to turn on the remote programmer.

3. Scroll to the ADVANCED menu and press the Select button.

4. Scroll to SYSTEM TYPE and select the appropriate standard program.

5. Press the Menu button.

6. Scroll to ACTUATOR SELECTION and press the Select button.

7. Select each direction input control and adjust to the following settings:

• Forward - U/D

• Reverse - U/D

• Right - Up

• Left - Down

8. Press the Save button.

9. Press the Menu button.

10. Scroll to PERFORMANCE ADJUST and press the Select button.

11. Scroll to LIMITS TYPE and press the Select button.

12. Select the appropriate input type (Potentiometers) and press the Save button.

13. Calibrate the tilt potentiometer. Refer to Calibrating the Tilt Potentiometer for a TAC

on page 146.

Calibrating the Tilt Potentiometer for a TAC

1. Select CALIBRATIONS from the main menu. The calibrations menu will be displayed.

2. Select the menu item that corresponds to the potentiometer to be adjusted. The Up

Angle adjustment screen will then be displayed.

3. Position the seat back in the fully upright position.

4. Using a protractor or angle pitch calculator, measure the actual angle of the seat with

respect to the floor. This measurement should range from 0° to 10°.

5. Adjust the tilt up angle setting on the programmer to the measured angle.

¸TILT ANGLE

RECLINE ANGLE

SECTION 14—ELECTRONICS

Part No 1114842 147 2G Tarsys®Powered Seating System

6. Press the SELECT key on the programmer to proceed to the Tilt Down adjustment

screen.

7. Tilt the seat until the measured angle is approximately 50°.

8. Adjust the tilt down angle setting on the programmer to the measured angle. The

range is between 45°and 55°.

9. Press the SAVE key on the programmer to store both the up and down angle

adjustments in the user memory.

NOTE: The adjustments in STEPS 10 to 15 will ensure the programmed angle setting for the seat

matches the mechanical adjustment made for the seat. This will prevent the actuator from running

excessively when the seat has finished moving.

10. Press the Menu button.

11. Select PERFORMANCE ADJUST and press the Select button.

NOTE: For STEP 12, listen to the tilt actuator while observing the seat position.

12. Tilt the seating system to the full upright position.

13. Perform one of the following:

• If the tilt actuator continues to run after the seating system stops moving, proceed

to STEP 14.

• If the tilt actuator stops when the seating system stops moving, proceed to STEP 17.

14. Increase the tilt up angle setting on the programmer.

15. Press the Save button.

16. Repeat STEPS 10 to 15 until the actuator stops when the seating system stops moving.

17. Press the Power button.

18. Disconnect the remote programmer from the TAC.

TILT UP ANGLE

5

PRESS SELECT

TO CONTINUE

TILT DOWN ANGLE

50

PRESS SAVE

TO SET ANGLES

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 148 Part No 1114842

 WARNING

NEVER operate the wheelchair while the seat is in any seat angle position over 20°

RELATIVE TO THE VERTICAL POSITION. Drive lockout MUST not be adjusted

beyond 20°.

The wheelchair user MUST have a clear line of sight to drive safely. On initial chair

delivery and after adjusting the back angle, drive lockout switch or tilt system, tilt

the seat back to the farthest driving position immediately before drive lockout

engages and ensure there is a clear line of sight present in which to drive the wheel-

chair. If a clear line of sight is not present, have the back angle repositioned or read-

just the lockout angle such that safe driving with a clear line of sight is achieved.

Otherwise injury or damage may occur.

19. Tilt the system up and down and test that the drive lockout works at no more than 20°

of tilt.

20. Secure the TAC cables. Refer to TAC Cables on page 157.

Replacing the Tilt Recline Single Switch (TRSS)

NOTE: For this procedure, refer to FIGURE 14.4 on page 149.

1. Turn the joystick off.

2. Disconnect the joystick.

3. Disconnect the auxiliary power connectors.

4. Disconnect the actuator (WHITE connector).

5. Disconnect the mercury switch (3-pin Molex connector).

6. Note the locations of any tie-wraps securing cables connected to the TRSS for proper

installation.

7. Cut the tie-wraps securing the cables connected to the TRSS.

8. Remove the two button head screws securing the TRSS to the mounting bracket.

9. Remove the TRSS from the mounting bracket.

10. Reverse STEPS 2–9 to install the TRSS.

11. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

SECTION 14—ELECTRONICS

Part No 1114842 149 2G Tarsys®Powered Seating System

FIGURE 14.4 Replacing the Tilt Recline Single Switch (TRSS)

Removing/Installing Joystick(s)

NOTE: For this procedure, refer to FIGURE 14.5 on page 150.

Removing

1. Disconnect the joystick.

2. Turn the adjustment lock lever to release the joystick mounting tube.

3. Cut any tie-wraps securing the joystick to the seating system.

4. Remove the joystick mounting tube from wheelchair.

Installing

1. Slide the joystick mounting tube through the bracket to the desired position.

2. Slide the adjustment lock with lever over the end of the joystick mounting tube and

secure the adjustment lock to the tube by turning the adjustment lock lever.

3. Tie-wrap the joystick cable to the joystick mounting tube and to the bottom of the

armrest (not shown).

4. Connect the joystick connectors (not shown).

5. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

Auxiliary Power

Connector

Actuator

Connector

(WHITE)

Mercury Switch Connector

(Molex Connector)

TRSS

Button Head Screws

Mounting Bracket

TRSS

Joystick

Mounting

Tube

Socket

Screws

TRSS

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 150 Part No 1114842

FIGURE 14.5 Removing/Installing Joystick(s)

Drive Lock-Out

Drive lock-out is a feature designed to prevent the wheelchair from being driven after the

seating system has been tilted or reclined beyond 20°* relative to the vertical position. The

back can be positioned at a 10° relative offset to the seat base, thereby resulting in a back

angle potential of 30° before which the drive lock-out is activated. This may affect the

wheelchair user’s line of sight while driving. Make sure the wheelchair user can see

properly to ensure safe driving. When the drive lock-out feature has been activated, the

LED on the single function toggle switch will light.

*NOTE: 20° back angle can be any combination of tilt, recline, back angle, and/or surface angle.

 WARNING

NEVER operate the wheelchair while in any tilted/reclined position over 20° relative

to the vertical position. If the drive lock-out does not stop the wheelchair from

operating in a tilt/recline position 20° relative to the vertical position, DO NOT

operate the wheelchair. Adjust the potentiometers. Refer to Adjusting the Tilt

Potentiometer on page 152 or Adjusting Recline Potentiometer on page 154.

Removing/Installing the Tilt Potentiometer

NOTE: For this procedure, refer to FIGURE 14.6 on page 151.

Removing

1. Remove the rear seat shroud. Refer to Removing/Installing Rear Shroud on page 102.

2. Remove the nylon washer and socket screw that secure the tilt linkage to the center

seat frame.

Mounting

Bracket

Joystick

Mounting

Tube

Joystick

NOTE: It is not necessary to remove the mounting brackets.

Opened Hole

Half Clamp

Adjustment Lock

with Lever

Joystick Mounting Bracket

Tie-Wrap

HERE

SECTION 14—ELECTRONICS

Part No 1114842 151 2G Tarsys®Powered Seating System

3. Loosen the set screw from the tilt linkage.

4. Remove the tilt linkage from the tilt potentiometer.

5. Remove the nut and washer securing the tilt potentiometer to the rear pivot assembly.

6. Remove the tilt potentiometer from the rear pivot assembly.

7. Disconnect the tilt potentiometer cable from the TRCM or TAC (3-pin Molex

connector).

8. Cut any tie-wraps that secure the tilt potentiometer cable to the wheelchair.

Installing

1. Install the tilt potentiometer onto the rear pivot assembly.

2. Install the washer and nut onto the tilt potentiometer.

3. Install and secure the tilt linkage onto the tilt potentiometer with the set screw.

4. Secure the tilt linkage to the center seat frame using the socket screw and nylon

washer.

5. Connect the tilt potentiometer cable to the TRCM or TAC (3-pin Molex connector).

6. Tie-wrap the tilt potentiometer cable to the wheelchair frame as described in Securing

the Cables on page 157.

7. Adjust the tilt potentiometer. Refer to Adjusting the Tilt Potentiometer on page 152.

8. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

FIGURE 14.6 Removing/Installing the Tilt Potentiometer

Tilt

Potentiometer Washer

Nut

Set Screw

Socket Screw

Nylon Washer

Tilt Linkage

Center Seat

Frame

Rear Pivot Assembly

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 152 Part No 1114842

Adjusting the Tilt Potentiometer

NOTE: For this procedure, refer to FIGURE 14.7 on page 153.

NOTE: The tilt potentiometer is adjusted at the factory for 20° drive lockout and should not require

further adjustment. However, if it becomes necessary to adjust the tilt potentiometer, the following

procedure may be used.

Adjusting a Tilt Potentiometer Used With a TRSS

To adjust the tilt potentiometer on a seating system with a single function toggle switch,

follow these steps:

NOTE: A single function toggle switch can only be used in conjunction with a tilt only seating

system.

1. Loosen the set screw on the tilt potentiometer. Refer to Detail “A”.

NOTE: Loosening the set screw enables the tilt potentiometer to be adjusted independently of the

chair seat movement.

NOTE: The up and down directions are noted on the front face of the single function toggle switch.

2. Push the single function toggle switch in the down direction and verify that the seat

tilts back.

3. Push the single function toggle switch in the up direction and verify that the seat raises

to the upright position.

4. Tilt the seat back 20° from the vertical position. Verify angles by using magnetic

protractor (available at any hardware store).

NOTE: 20° from the vertical position is the angle at which drive-lock out should occur.

5. Disconnect the single function toggle switch connector from the actuator connector.

6. Push and hold the single function toggle switch in the up direction.

7. Turn the tilt potentiometer clockwise until it stops.

8. Verify that the drive lock-out light on the single function toggle switch is NOT

illuminated.

9. Push the single function toggle switch in the down direction and verify that the drive

lock-out light on the single function toggle switch is still NOT illuminated.

10. Holding the single function toggle switch in the down direction, turn the tilt

potentiometer counter-clockwise until the drive lock-out light is illuminated.

11. Release the single function toggle switch.

12. Tighten the set screw on the tilt potentiometer.

13. Apply Glyptal to top of set screw to secure in place.

14. Reconnect actuator and single function toggle switch.

15. Tilt the seat up and down to confirm that the drive lock-out light illuminates on/off

when the seat angle passes through the 20° lockout angle.

SECTION 14—ELECTRONICS

Part No 1114842 153 2G Tarsys®Powered Seating System

NOTE: If drive lock-out light does NOT react as described in STEP 15, repeat procedure. If drive

lock-out light still does NOT react as described in STEP 15, DO NOT use unit. Contact Invacare

Technical Support at the number listed on the back cover.

FIGURE 14.7 Adjusting the Tilt Potentiometer

Adjusting Tilt Potentiometer Used With a TRCM, TAC or SAC

To adjust the tilt potentiometer on a seating system with a TRCM, TAC or SAC, follow

these steps:

1. Plug the remote programmer into the wheelchair TRCM controller.

2. Set remote programmer to the current status screen.

NOTE: For STEPS 1-2, refer to the MK5 electronics service manual supplied with wheelchair.

3. Measure the back angle relative to the seat. Verify angles by using magnetic protractor

(available at any hardware store).

4. Loosen the set screw on the tilt potentiometer.

Tilt Potentiometer

Located on Rear

Pivot Assembly

Place Magnetic

Protractor

Here

To Wiring

Harness

To

Potentiometer

Connector

To Actuator

Drive Lock-Out Light

Single Function

Toggle Switch

Tilt Potentiometer

Set Screw

Set Screw

Side View

DETAIL “A”

DETAIL “B” DETAIL “C”

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 154 Part No 1114842

5. Turn potentiometer with small flat screwdriver until screen on remote programmer

reads the angle noted in STEP 3.

NOTE: Seat angle is relative to the horizontal position.

NOTE: Tilt Up Limit - Shows the status of the limit as programmed in the Performance Menu. If

the limit has been reached the status will be TRUE. If the seat or back is not at a limit the status

will be FALSE.

NOTE: Tilt Down Limit - Shows the status of the limit as programmed in the Performance Menu.

If the limit has been reached the status will be TRUE. If the seat or back is not at a limit the status

will be FALSE.

6. While monitoring the current status screen on the remote programmer, tighten the set

screw on the tilt potentiometer shaft.

7. Apply Glyptal to top of set screw to secure in place.

Adjusting Recline Potentiometer

NOTE: For this procedure, refer to FIGURE 14.8 on page 155.

To adjust the recline potentiometer on a seating system with a TRCM or TAC, follow these

steps:

1. Hook up remote programmer to the wheelchair TRCM or TAC.

2. Set remote programmer to the current status screen.

NOTE: For STEPS 1-2, refer to the MK5 electronics Service Manual supplied with wheelchair.

3. Measure the back angle relative to the seat. Verify angles by using magnetic protractor.

(Available at any hardware store).

4. Remove the seat pan. Refer to Removing/Installing Seat Pan on page 54.

5. Loosen the set screw on the recline potentiometer shaft.

6. Turn potentiometer until screen on remote programmer reads 90° recline angle in

current status screen of TRCM or TAC.

NOTE: Back angle is relative to the seat frame.

NOTE: Recline Up Limit - Shows the status of the limit as programmed in the Performance Menu

of TRCM or TAC. If the limit has been reached the status will be TRUE. If the seat or back is not

at a limit the status will be FALSE.

NOTE: Recline Down Limit - Shows the status of the limit as programmed in the Performance

Menu of TRCM or TAC. If the limit has been reached the status will be TRUE. If the seat or back

is not at a limit the status will be FALSE.

7. While monitoring the current status screen on the remote programmer, tighten the set

screw on the recline potentiometer shaft.

8. Apply Glyptal to top of set screw to secure in place.

SECTION 14—ELECTRONICS

Part No 1114842 155 2G Tarsys®Powered Seating System

FIGURE 14.8 Adjusting Recline Potentiometer

Removing/Installing the Recline Potentiometer

NOTE: For this procedure, refer to FIGURE 14.9 on page 156.

Removing

1. Remove the socket screw, spacer and locknut securing the linkage to the center seat

frame.

2. Loosen the set screw on the recline linkage.

3. Remove the recline linkage from the recline potentiometer.

4. Remove the nut and washer securing the recline potentiometer to the bracket.

5. Remove the recline potentiometer from the bracket.

6. Unplug the recline potentiometer cable from the TRCM or TAC.

7. Cut any tie-wraps securing the recline potentiometer cable to the wheelchair.

Installing

1. Install the recline potentiometer up through the bracket.

2. Install the washer onto the recline potentiometer and secure to the bracket using the

nut.

3. Install the recline linkage onto the recline potentiometer.

DETAIL “A”

Set Screw

Recline

Potentiometer

SECTION 14—ELECTRONICS

2G Tarsys®Powered Seating System 156 Part No 1114842

4. Turn the potentiometer fully clockwise until it stops, and then back 1/8 turn

counter-clockwise.

5. Tighten the set screw to secure the recline linkage to the recline potentiometer.

6. Secure the recline linkage to the center seat frame using the socket screw, spacer and

locknut.

7. Route and secure the recline potentiometer cable as described in Securing the Cables

on page 157.

8. Plug the recline potentiometer cable into the TRCM or TAC (3-pin Molex connector).

9. Adjust the recline potentiometer. Adjusting Recline Potentiometer on page 154.

10. Perform the post-service inspection. Refer to Post-Service Inspection Checklist on

page 21.

FIGURE 14.9 Removing/Installing the Recline Potentiometer

Recline

Linkage

Washer and

Nut

Set Screw

Bracket

Socket

Screw

Spacer

Locknut

Center

Seat

Frame

Recline

Potentiometer

SECTION 15—WIRING AND CABLES

Part No 1114842 157 2G Tarsys®Powered Seating System

SECTION 15—WIRING AND CABLES

 WARNING

After ANY adjustments, repair or service and before use, make sure all attaching

hardware is tightened securely - otherwise injury or damage may occur.

Before adjusting, repairing or servicing the seating system, ALWAYS turn the

wheelchair power OFF, otherwise, injury or damage may result.

Pinch points exist between seat and base frames. Use caution, otherwise injury may

occur.

Securing the Cables

 WARNING

Cables MUST be secured to the wheelchair frame and/or base with tie-wraps after

servicing is complete. Failure to follow the warnings and instructions below could

result in injury to the users, attendants and/or bystanders and/or damage to the

wheelchair.

Cables MUST be secured so there are no loops of excess cable extending away from

the wheelchair. Bundle all excess cable together and secure with a tie-wrap. It may

also be necessary to secure these bundles to the frame and/or base.

Always test all wheelchair functions after securing the cables to be sure cables DO

NOT get pinched or crushed during operation of the wheelchair.

TAC Cables

NOTE: For this procedure, refer to FIGURE 15.1 on page 158.

1. Make sure the wheelchair is in the upright position.

CAUTION

The wheelchair MUST be in the upright position before securing the TAC cables to

prevent stretching and possibly breaking cables.

2. Tie-wrap the auxiliary power connector/potentiometer cable, actuator cable and MK5

Controller (5-pin connector) cable from the TAC.

NOTE: The accessory cable (9-pin sub D) does not need to be tie-wrapped with the other cables.

SECTION 15—WIRING AND CABLES

2G Tarsys®Powered Seating System 158 Part No 1114842

FIGURE 15.1 Securing the TAC Cables

Tilt Actuator Cable

NOTE: For this procedure, refer to FIGURE 15.2.

1. Connect the tilt actuator cable to the TRCM, SAC or TRSS connector (2-pin Anderson).

2. Bundle up the tilt actuator cable and tie-wrap it to the tilt actuator. Refer to

FIGURE 15.2.

FIGURE 15.2 Tilt Actuator Cable

Tilt Potentiometer Cable

NOTE: For this procedure, refer to FIGURE 15.3 on page 159.

1. Connect the tilt potentiometer cable to the TRCM, SAC or TRSS connector (3-pin

Molex).

2. Bundle up the tilt potentiometer cable and tie-wrap it to the rear pivot assembly. Refer

to FIGURE 15.3.

TAC Controller

Accessory Cable

(9-Pin Sub D Cable)

Tie-Wraps

Auxiliary Power

Connector/Potentiometer

Cable

Actuator

Cable

MK5 (5-pin Connector) Cable

Tilt Actuator

Tie-Wrap

SECTION 15—WIRING AND CABLES

Part No 1114842 159 2G Tarsys®Powered Seating System

FIGURE 15.3 Tilt Potentiometer Cable

Power Elevating Legrest, Recline Actuator and Recline Potentiometer

Cables

NOTE: For this procedure, refer to FIGURE 15.4 on page 160 and FIGURE 15.5 on page 161.

1. Perform one of the following:

• Recline Only Systems - Perform the following steps:

NOTE: Two people need to perform this procedure.

i. One person should support the front of the seat assembly.

ii. Note the mounting location of the recline links for proper installation.

iii. The remaining person should remove the two shoulder bolts and locknuts

securing the recline links to the front pivot assembly.

iv. Carefully tilt the seat assembly back.

• Tilt Only or Tilt/Recline Systems - Use the tilt mechanism to tilt the seat back 15°

to allow room to work.

NOTE: Right and left are determined from the perspective of an observer in front of the wheelchair.

2. Route the left power elevating legrest cable and the recline actuator cable to the

bottom of the lower seat shroud and tie-wrap the cables to the lower seat shroud. Refer

to FIGURE 15.4.

3. Repeat STEP 2 for the right power elevating legrest cable.

4. Connect the power elevating legrest and recline potentiometer cables to the TRCM or

TAC connectors (3-pin Molex).

5. Connect the recline actuator cable to the TRCM or TAC connector (2-pin Anderson).

6. Perform one of the following:

• Recline Only Systems - Perform the following steps:

NOTE: Two people need to perform this procedure.

i. One person should support the front of the seat assembly.

Rear Pivot

Assembly

Tilt Potentiometer

Tie-Wrap

SECTION 15—WIRING AND CABLES

2G Tarsys®Powered Seating System 160 Part No 1114842

ii. The remaining person should secure the recline links to the front pivot

assembly in the position noted using the two shoulder bolts and locknuts.

Torque to 23 ft-lbs ± 20%.

• Tilt Only or Tilt/Recline Systems - Use the tilt mechanism to return the seat to the

upright position.

FIGURE 15.4 Power Elevating Legrest, Recline Actuator and Recline Potentiometer Cables -

Tie-Wrap to Lower Seat Shroud

CAUTION

The wheelchair MUST be reclined backward to the maximum position before

securing the power elevating legrest, recline actuator and recline potentiometer

cables to prevent stretching and possibly breaking cables.

7. Recline back as far as possible.

8. From behind the wheelchair, tie-wrap the power elevating legrest, recline actuator

and recline potentiometer cables to the tilt actuator. Refer to FIGURE 15.5.

Left Tie-Wrap

Right Tie-Wraps

NOTE: Right

and left are

determined

from the

perspective of

an observer in

front of the

wheelchair.

Lower Seat

Shroud

Top View

SECTION 15—WIRING AND CABLES

Part No 1114842 161 2G Tarsys®Powered Seating System

9. Use the recline function to return the wheelchair to the upright position.

FIGURE 15.5 Power Elevating Legrest, Recline Actuator and Recline Potentiometer Cables -

Tie-Wrap to Tilt Actuator

4-Way Switch, TRCM and/or TAC Cables

NOTE: For this procedure, refer to FIGURE 15.6 on page 162 and FIGURE 15.7 on page 162.

1. Make sure the wheelchair is in the upright position.

CAUTION

The wheelchair MUST be in the upright position before securing the 4-way switch,

TRCM and/or TAC cables, to prevent stretching and possibly breaking cables.

2. Bundle up the cable for the 4-way toggle switch and tie-wrap it to the TRCM or TAC

controller bracket. Refer to FIGURE 15.6.

Tilt Actuator

Tie-Wrap

Power Elevating

Legrest, Recline

Actuator, and

Recline

Potentiometer

Cables

SECTION 15—WIRING AND CABLES

2G Tarsys®Powered Seating System 162 Part No 1114842

FIGURE 15.6 4-Way Toggle Switch Cable

3. Tie-wrap the auxiliary power connector/potentiometer cable, actuator cable and MK5

Controller (5-pin connector) cable from the TRCM or TAC as shown in FIGURE 15.7.

NOTE: The accessory cable (9-pin sub D) does not need to be tie-wrapped with the other cables.

4. Connect the accessory cable to the 4-way switch cable.

FIGURE 15.7 4-Way Switch, TRCM and/or TAC Cables

Tie-Wraps

4-Way Toggle Switch Cable

TRCM Controller

Bracket

TAC or TRCM Controller

Accessory Cable

(9-Pin Sub D Cable)

Tie-Wraps

Auxiliary Power

Connector/Potentiometer

Cable

Actuator

Cable

MK5 (5-pin

Connector) Cable

SECTION 15—WIRING AND CABLES

Part No 1114842 163 2G Tarsys®Powered Seating System

Joystick, SAC or TRSS Cables

NOTE: For this procedure, refer to FIGURE 15.8.

1. Tie-wrap the joystick cable from the MK5 controller to the rear pivot assembly. Refer

to FIGURE 15.8.

FIGURE 15.8 Joystick, SAC or TRSS Cables

2. Connect the joystick cables.

3. Bundle up the connected cables until there is no slack and then tie-wrap them and the

SAC or TRSS cables (if present) to the armrest.

All Cables (Final Steps)

NOTE: For this procedure, refer to FIGURE 15.9 on page 164.

1. Connect the auxiliary power connectors and any remaining cables.

2. Bundle up all loose cables and then tie-wrap them to the rear pivot assembly and to

the rear of the tilt actuator. Refer to FIGURE 15.9.

3. Install the rear shroud in the location indicated in FIGURE 15.8. Refer to

Removing/Installing Rear Shroud on page 102.

CAUTION

The wheelchair must be carefully tilted backward and forward to the maximum

positions in order to determine if any cables are snagged and stretched by the bat-

tery controller shroud. Tie-wrap any loose cables and test again until there is no

snagging.

Rear Pivot assembly

Joystick Cable

Battery Controller

Shroud

Tie-Wraps

SECTION 15—WIRING AND CABLES

2G Tarsys®Powered Seating System 164 Part No 1114842

FIGURE 15.9 All Cables (Final Steps)

Wiring Schematics

TRSS

Tilt

Actuator

Rear Pivot

Assembly

Tilt Actuator Connector

(Anderson Connector)

TRSS

MKIV™Programmer

(For Programming

Actuator and

Wheelchair Control)

MK5 Joystick

MK5 Joystick Connection

(15-Pin D-Sub for Control of

Wheelchair and Actuators)

24 VDC Auxiliary Power Connectors

to AUX Output of Wheelchair

Controller (Custom 3-Pin Plug)

MK5

Wheelchair

Controller

Wheelchair Controller Programmer

Port/Battery Charging Port

(3-Pin Circular DIN Socket)

Tilt Potentiometer

Connector (Molex)

Network Connection to

Programmer Port of Joystick

(3-Pin Circular DIN Plug)

SECTION 15—WIRING AND CABLES

Part No 1114842 165 2G Tarsys®Powered Seating System

SAC

Tilt Actuator Connector (2-Pin Anderson)

SAC

MKIV Programmer

(For Programming

Actuator and

Wheelchair Control)

MK5 Joystick

MK5 Joystick Connection

(15-Pin D-Sub for

Control of Wheelchair

and Actuators)

Network Connection

to ACC Port of

Wheelchair Control

(5-Pin Circular DIN

Plug)

24 VDC Auxiliary Power

Connectors to AUX Output

of Wheelchair Controller

(Custom 3-Pin Plug)

MK5

Wheelchair

Controller

Wheelchair Controller Programmer

Port/Battery Charging Port

(3-Pin Circular DIN Socket)

Network Connection to

Programmer Port of Joystick

(3-Pin Circular DIN Plug)

Tilt Potentiometer Connector (3-Pin Molex)

SECTION 15—WIRING AND CABLES

2G Tarsys®Powered Seating System 166 Part No 1114842

TRCM/TAC

To Tilt Actuator

To Recline Actuator

To VSR Actuator

To Left Legrest Actuator

To Tilt Potentiometer

TRCM/TAC

TRCM/TAC

Programming

Port (5-Pin)

Wheelchair Controller

Auxiliary Programmer Port

(5-Pin Circular DIN Socket)

MK5 Joystick Connection

(15-Pin D-Sub for Control of

Wheelchair and Actuators)

24 VDC Auxiliary Power Connectors to

AUX Output of Wheelchair Controller

(Custom 3-Pin Plug)

Attendant/User Switch Input

(9-Pin D-Sub)

To Right Legrest Actuator

Actuator Controls

(2-Pin Anderson Connectors)

Limit Sensor Inputs

(3-Pin Molex/Amp Connectors)

To Recline Potentiometer

MKIV Programmer

(For Programming

Actuator and

Wheelchair Control)

MK5 Joystick

MK5

Wheelchair

Controller

Wheelchair Controller Programmer

Port/Battery Charging Port (3-Pin

Circular DIN Socket)

Network

Connection to

Programmer Port

of Joystick

(3-Pin Circular

DIN Plug)

Actuator

Control Inputs

(TAC Only)

Network

Connection to ACC

Port of Wheelchair

Control (5-Pin

Circular DIN Plug)

SECTION 15—WIRING AND CABLES

Part No 1114842 167 2G Tarsys®Powered Seating System

NOTES

LIMITED WARRANTY

For warranty information, please refer to the original owner's manual which came with

this product, or contact Invacare for more information.

Invacare Corporation www.invacare.com

USA

One Invacare Way

Elyria, Ohio USA

44036-2125

800-333-6900

Invacare Technical

Support

800-832-4707

Canada

570 Matheson Blvd E Unit 8

Mississauga Ontario

L4Z 4G4 Canada

800-668-5324

All rights reserved. Trademarks are

identified by the symbols ™ and ®.

All trademarks are owned by or licensed

to Invacare Corporation unless otherwise

noted.

Phillips is a registered trademark of the

Phillips Screw Company.

© 2007 Invacare Corporation

Part No 1114842

Rev A - 4/07