Graco 311283E Gh833 Sprayer Users Manual Sprayer, Repair Manual, English

: Graco Graco-311283E-Gh833-Sprayer-Users-Manual-686433 graco-311283e-gh833-sprayer-users-manual-686433 graco pdf

Open the PDF directly: View PDF .
Page Count: 36

311283E

ENG

Repair

GH™ 833 Sprayers

For use with Architectural Coatings, Paints, Roof Coatings and Below Grade Coatings. For

professional use only.

Model: 249318, 249617, 253471, 253472

4000 psi (27.6 MPa, 275.8 bar) Maximum Working Pressure

Korean patent: 10-0647761

Related Manuals

IMPORTANT SAFETY INSTRUCTIONS

Read all warnings and instructions in this

manual. Save these instructions.

311279

311484

311485

311254

ti7107b

Warning

2311283E

Warning

The following warnings are for the setup, use, grounding, maintenance, and repair of this equipment. The exclama-

tion point symbol alerts you to a general warning and the hazard symbols refer to procedure-specific risks. When

these symbols appear in the body of this manual, refer back to these Warnings. Product-specific hazard symbols and

warnings not covered in this section may appear throughout the body of this manual where applicable.

WARNINGWARNINGWARNING

WARNING

FIRE AND EXPLOSION HAZARD

Flammable fumes, such as solvent and paint fumes, in work area can ignite or explode. To help prevent

fire and explosion:

• Use equipment only in well ventilated area.

• Do not fill fuel tank while engine is running or hot; shut off engine and let it cool. Fuel is flammable and

can ignite or explode if spilled on hot surface.

• Eliminate all ignition sources; such as pilot lights, cigarettes, portable electric lamps, and plastic drop

cloths (potential static arc).

• Keep work area free of debris, including solvent, rags and gasoline.

• Do not plug or unplug power cords, or turn power or light switches on or off when flammable fumes are

present.

• Ground all equipment in the work area. See Grounding instructions.

• Use only grounded hoses.

• Hold gun firmly to side of grounded pail when triggering into pail.

• If there is static sparking or you feel a shock, stop operation immediately. Do not use equipment until

you identify and correct the problem.

• Keep a working fire extinguisher in the work area.

SKIN INJECTION HAZARD

High-pressure fluid from gun, hose leaks, or ruptured components will pierce skin. This may look like just a

cut, but it is a serious injury that can result in amputation. Get immediate surgical treatment.

• Do not point gun at anyone or at any part of the body.

• Do not put your hand over the spray tip.

• Do not stop or deflect leaks with your hand, body, glove, or rag.

• Do not spray without tip guard and trigger guard installed.

• Engage trigger lock when not spraying.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,

checking, or servicing equipment.

PRESSURIZED EQUIPMENT HAZARD

Fluid from the gun/dispense valve, leaks, or ruptured components can splash in the eyes or on skin and

cause serious injury.

• Follow Pressure Relief Procedure in this manual, when you stop spraying and before cleaning,

checking, or servicing equipment.

• Tighten all fluid connections before operating the equipment.

• Check hoses, tubes, and couplings daily. Replace worn or damaged parts immediately.

RECOIL HAZARD

Brace yourself; gun may recoil when triggered and cause you to fall, which could cause serious injury.

Warning

311283E 3

EQUIPMENT MISUSE HAZARD

Misuse can cause death or serious injury.

• Do not operate the unit when fatigued or under the influence of drugs or alcohol.

• Do not exceed the maximum working pressure or temperature rating of the lowest rated system com-

ponent. See Technical Data in all equipment manuals.

• Use fluids and solvents that are compatible with equipment wetted parts. See Technical Data in all

equipment manuals. Read fluid and solvent manufacturer’s warnings. For complete information about

your material, request MSDS forms from distributor or retailer.

• Check equipment daily. Repair or replace worn or damaged parts immediately with genuine Manufac-

turer’s replacement parts only.

• Do not alter or modify equipment.

• Use equipment only for its intended purpose. Call your distributor for information.

• Route hoses and cables away from traffic areas, sharp edges, moving parts, and hot surfaces.

• Do not kink or over bend hoses or use hoses to pull equipment.

• Keep children and animals away from work area.

• Comply with all applicable safety regulations.

MOVING PARTS HAZARD

Moving parts can pinch or amputate fingers and other body parts.

• Keep clear of moving parts.

• Do not operate equipment with protective guards or covers removed.

• Pressurized equipment can start without warning. Before checking, moving, or servicing equipment,

follow the Pressure Relief Procedure in this manual. Disconnect power or air supply.

PRESSURIZED ALUMINUM PARTS HAZARD

Do not use 1,1,1-trichloroethane, methylene chloride, other halogenated hydrocarbon solvents or fluids

containing such solvents in pressurized aluminum equipment. Such use can cause serious chemical reac-

tion and equipment rupture, and result in death, serious injury, and property damage.

SUCTION HAZARD

Never place hands near the pump fluid inlet when pump is operating or pressurized. Powerful suction could

cause serious injury.

CARBON MONOXIDE HAZARD

Exhaust contains poisonous carbon monoxide, which is colorless and odorless. Breathing carbon

monoxide can cause death. Do not operate in an enclosed area.

TOXIC FLUID OR FUMES HAZARD

Toxic fluids or fumes can cause serious injury or death if splashed in the eyes or on skin, inhaled, or swal-

lowed.

• Read MSDS’s to know the specific hazards of the fluids you are using.

• Store hazardous fluid in approved containers, and dispose of it according to applicable guidelines.

BURN HAZARD

Equipment surfaces and fluid that’s heated can become very hot during operation. To avoid severe burns,

do not touch hot fluid or equipment. Wait until equipment/fluid has cooled completely.

PERSONAL PROTECTIVE EQUIPMENT

You must wear appropriate protective equipment when operating, servicing, or when in the operating area

of the equipment to help protect you from serious injury, including eye injury, inhalation of toxic fumes,

burns, and hearing loss. This equipment includes but is not limited to:

• Protective eyewear

• Clothing and respirator as recommended by the fluid and solvent manufacturer

•Gloves

• Hearing protection

WARNINGWARNINGWARNING

WARNING

Component Identification

4311283E

Component Identification

,

ti7133b

ti7107b

3

2

4

1

6

7

5

9

11

10

ti7133

8

Ref Description

1 Hydraulic pump valve

2 Pressure control

3 Lock ring

4 Drain valve

5 Engine ON/OFF switch

6 Engine controls

7 Trigger lock

8 Serial number ID label

9 Lift locations

10 Suction holder

11 Hydraulic oil fill

Operation

311283E 5

Operation

Pressure Relief Procedure

1. Set pump valve OFF. Turn engine OFF.

2. Turn pressure to lowest setting. Trigger gun into pail

to relieve pressure.

3. Open prime valve (vertical).

If you suspect that the spray tip or hose is completely

clogged, or that pressure has not been fully relieved after

following the steps above, VERY SLOWLY, loosen tip

guard retaining nut or hose end coupling to relieve pres-

sure gradually, then loosen completely. Then clean tip

and hose.

General Repair Information

• Install belt guard before operation of sprayer and

replace if damaged. Belt guard reduces risk of

pinching and loss of fingers.

To reduce risk of serious injury,:

• Keep all screws, nuts, washers, etc. removed during

repair procedures. These parts usually are not pro-

vided with replacement kits.

• Test repairs after problems are corrected.

• If sprayer does not operate properly, review repair

procedure to verify you did it correctly. See Trouble-

shooting, page 7.

• Do not touch moving parts with fingers or tools while

testing repair.

Grounding

Ground sprayer with grounding clamp to earth ground

for safe sprayer operation.

System pressure must be manually relieved to prevent

it from starting or spraying accidentally. Fluid under high

pressure can be injected into the skin and cause seri-

ous injury. To reduce risk of injury from injection, follow

this procedure whenever you are instructed to relieve

pressure, stop spraying, service equipment or install or

clean spray tip. Read warnings, page 4.

TIA

• Hydraulic system and engine may become very hot

during operation and could burn skin if touched.

Flammable materials spilled on hot, bare motor

could cause fire or explosion. Have belt guard in

place during operation to reduce risk of pinching or

loss of fingers.

Maintenance

6311283E

Maintenance

For detailed engine maintenance and specifications, re-

fer to separate Honda Engines Owner’s Manual, sup-

plied.

Spark Plug:

• Use BPR6ES (NGK) or W20EPR-U (NIPPON-

DENSO) plug, only.

• Gap plug to 0.028 to 0.031 in. (0.7 to 0.8 mm).

• Use spark plug wrench when installing and remov-

ing plug.

Frequency Procedure

Daily Check engine oil level and fill as necessary.

Daily Check hydraulic oil level and fill as necessary.

Daily Check hose for wear and damage.

Daily Check gun safety for proper operation.

Daily Check pressure drain valve for proper operation.

Daily Check and fill gas tank.

Daily Check that displacement pump is tight.

Daily Check level of TSL in displacement pump packing nut. Fill nut, if neces-

sary. Keep TSL in nut to help prevent fluid build up on piston rod and

premature wear of packings and pump corrosion.

After first 20 hours

of operation

Drain engine oil and refill with clean oil. Reference Honda Engines

Owner’s Manual for correct oil viscosity.

Weekly Remove engine air filter cover and clean element. Replace element, if

necessary. If operating in an unusually dusty environment; check filter

daily and replace, if necessary.

Replacement elements can be purchased from your local Honda dealer.

Weekly/Daily Remove and debris or media from hydraulic rod.

After each 100

hours of operation

Change engine oil. Reference Honda Engines Owner’s Manual for cor-

rect oil viscosity.

Semi-annually Check belt wear; replace if necessary.

Yearly or 2000

hours

Replace hydraulic oil and filter element with Graco ISO 46 Hydraulic Oil

169236; 5 gallon/20 liter or 207428; 1 gallon/3.8 liter) and filter element

287871.

Troubleshooting

311283E 7

Troubleshooting

PROBLEM CAUSE SOLUTION

Gas engine pulls hard (won't start) Hydraulic pressure is too high Turn hydraulic pressure knob coun-

terclockwise to lowest setting

Gas engine does not start Switch OFF, low oil, no gasoline Consult engine manual, supplied

Gas engine doesn't work properly Faulty engine Consult engine manual, supplied

Gas engine operates, but displace-

ment pump doesn't operate

Pump valve is OFF Set pump valve ON

Pressure setting too low Increase pressure

Displacement pump outlet filter (if

used) is dirty or clogged

Clean the filter

Tip or tip filter (if used) is clogged Remove tip and/or filter and clean

Hydraulic fluid too low Shut off sprayer. Add fluid*.

Belt worn, broken or off Replace belt.

Hydraulic pump worn or damaged Bring sprayer to Graco distributor for

repair

Dried paint seized paint pump rod Service pump. See manual 311485

Hydraulic motor not shifting Set pump valve OFF. Turn pressure

down. Turn engine OFF. Pry rod up or

down until hydraulic motor shifts.

Displacement pump operates, but

output is low on upstroke

Piston ball check not seating properly Service piston ball check. See man-

ual 311485

Piston packings worn or damaged Replace packings. See manual

311485

Displacement pump operates but

output is low on downstroke and/or

on both strokes

Piston packings worn or damaged Tighten packing nut or replace pack-

ings. See manual 311485

Intake valve ball check not seating

properly

Service intake valve ball check. See

manual 311485

Suction tube air leak

Paint leaks and runs over side of wet-

cup

Loose wet-cup Tighten wet-cup enough to stop leak-

age

Throat packings worn or damaged Replace packings. See manual

311485

Excessive leakage around hydraulic

motor piston rod wiper

Piston rod seal worn or damaged Replace these parts.

Fluid delivery is low Pressure setting too low Increase pressure

Displacement pump outlet filter (if

used) is dirty or clogged

Clean filter

Intake line to pump inlet is not tight Tighten

Hydraulic motor is worn or damaged Bring sprayer to Graco distributor for

repair

Large pressure drop in fluid hose Use larger diameter or shorter hose

Troubleshooting

8311283E

The sprayer overheats Paint buildup on hydraulic compo-

nents

Clean

Oil level is low Fill with oil.

Spitting from gun Air in fluid pump or hose Check for loose connections on

siphon assembly, tighten, then rep-

rime pump.

Loose intake suction Tighten.

Fluid supply is low or empty Refill supply container.

Excessive hydraulic pump noise Low hydraulic fluid level Turn sprayer OFF. Add fluid*.

*Check hydraulic fluid level often. Do not allow it to become too low. Use only Graco approved hydraulic fluid, page 6.

PROBLEM CAUSE SOLUTION

Compensator Seal Replacement

311283E 9

Compensator Seal Replacement

Removal

1. Relieve pressure, page 5. Allow hydraulic system to

cool before beginning the service procedure.

2. Remove screw(197) and pump handle cover (196).

Remove four cover bolts (79) and cover (140).

NOTE: It is not necessary to remove the hydraulic

lines before removing the cover. The cover is

designed to provide ample room for the cover to fit

over the hose.

3. Remove compensator screws and seperate com-

pensator and adapter block.

4. Install new gaskets and torque screws.

5. Install cover (140) with four screws (79). Torque to

25-30 in-lb (2.8 - 3.4 Nzm). Install pump handle

cover (196) with screw (197).

ti7805b

140

79

196

197

Torque 50 in-lbs

4 plcs

Adapter

Block

O-Ring

Gasket

O-Ring

Lubricate before installation

ti17601a

Gasket

Note Gasket Orientation

Compensator

Assembly

Torque 50 in-lbs

4 plcs

1

4

3

2

Torque sequence: 1-2-3-4-1

All cap screws must be tightened

When compensator assembled to

Gasket Adaptor Block. Do not

pre-tighten cap screws.

ti7111b

140

197 196 79

Displacement Pump Replacement

10 311283E

Displacement Pump Replacement

See manual 311485 for pump repair instructions.

Removal

1. Flush pump (36). Stop pump on down stroke if

possible.

2. Relieve pressure, page 5.

3. Remove suction set (147) from pump (36).

4. Remove filter housing (110), page 16.

5. Remove clip (121).

6. Slide cover up (124).

7. Separate coupling (125) and remove.

36

147

ti7119

110

121

ti7789

124

ti7816

ti7814

125

Displacement Pump Replacement

311283E 11

8. Loosen jam nut (122) with a hammer. Unscrew

pump (36) from power head.

9. Remove pump (36).

Installation

1. Screw jam nut (122) to bottom of pump threads (36).

2. Slide cover (124) up over pump rod. Screw pump

completely up into power head.

3. Hand tighten jam nut (122). Then tighten securely

1/8 to 1/4 turn with hammer or torque to 330 ft-lb

(447.4 N•m).

4. Slide cover (124) up over pump rod. With engine in

OFF position, pull recoil starter to move rod until it

contacts pump rod.

5. Install coupling (125) around pump rod.

6. Slide cover (124) over coupling (125).

ti7782

122

36

ti7804

36

36

122

ti7779

ti7817

122

ti7771

125

ti7815

125

124

Displacement Pump Replacement

12 311283E

7. Install clip pin (121) to secure. 8. Install filter housing (110), page 16.

9. Connect suction hose (147) to pump outlet (36).

121

125

ti7809

ti7772

110

36

147

Pump Power Head Replacement

311283E 13

Pump Power Head Replacement

Removal

1. Relieve pressure, page 5.

2. Remove hydraulic lines (100, 101) from head (75).

3. Loosen (4) mounting bolts (7) on the adapter

enough to lift and remove assembly.

4. Remove power head from unit.

Installation

1. Install power head on unit.

100 101

75

ti7803

7

ti7841

ti7847

ti7851

Pump Power Head Replacement

14 311283E

2. Tighten power head bolts (7). Torque bolts to 400 +

10 in-lb (45 + 1 N•m).

3. Attach hoses (100, 101) to head (75). Torque to 450

+ 10 in-lb (50.84 N•m).

4. To purge air from hydraulic lines, increase pressure

enough to start hydraulic motor stroking and allow

fluid to circulate for 15 seconds.Turn pressure

down. Turn prime valve horizontal (closed).

ti7853

101

100

75

ti7777

Hydraulic Motor

311283E 15

Hydraulic Motor

1

2

3

4

1

450 in-lb (51 N.m)

600 in-lb (68 N.m)

60 in-lb (7 N.m)

930 in-lb (105 N.m)

Torqued in 3 steps

2

3

4

ti7868

Filter Housing Replacement

16 311283E

Filter Housing Replacement

Removal

1. Relieve pressure, page 5.

2. Remove paint and drain lines from filter housing.

3. Loosen filter housing fitting (110) until housing and

remove housing from pump.

Installation

1. Install filter housing (110) in pump opening.

2. Tighten fitting.

3. Attach paint and drain lines.

ti7845

ti7119

110

ti7772

110

ti7850

Torque to 225 + 10 in-lb. (25.4+ 1.1 N.m)

Hydraulic Pump Replacement

311283E 17

Hydraulic Pump Replacement

Changing Hydraulic Oil

Draining Oil

a. Place drain pan under oil tank and drain plug.

b. Unscrew reservoir (64) drain plug and drain oil

from reservoir.

Refilling Oil

a. Replace drain plug.

b. Fill tank with Graco Hydraulic Oil, ISO 46. Tank

holds approximately 4 gallons.

Removal

1. Relieve pressure, page 5. Allow hydraulic system

to cool before beginning the service procedure.

2. Drain oil, Changing Hydraulic Oil procedure,

page 17.

3. Remove screw (197) and pump handle cover (196).

Remove four cover bolts (79) and cover (140). (It is

not necessary to remove the hydraulic lines before

removing cover. The cover is designed to provide

ample room for the cover to fit over the hose.)

4. Unscrew suction line connections to hydraulic

pump. Place a container under hoses to catch any

dripping oil.

drain

plug

ti7784

79

140

ti7805b

197196

ti7790

ti7801

Hydraulic Pump Replacement

18 311283E

5. Remove (4) belt cover screws (79), washers (78)

and grommets (80) (2 each side).

6. Remove belt cover (67).

7. Remove belt (19), page 21.

8. Loosen set-screws (87) on front of large pulley (4).

9. Remove pulley (4) from hydraulic pump shaft.

10. Remove nuts (10) and screws (9) holding pump to

frame.

78

67

ti7796

80

79

67

ti7795

4

87

ti7783

4

ti7807

9

10

ti7788

Hydraulic Pump Replacement

311283E 19

11. Remove hydraulic pump (3).

12. Remove fittings (30, 34, 35) from pump (3) and set

aside to use on the new pump.

Installation

1. Install fittings (30, 34, 35) from old pump on new

pump. Torque fitting 30 and 35 to 600 + 10 in-lb

(67.8 N.m). Torque fitting 34 to 450 in-lb (50.8 N.m).

NOTE: Fill pump casing with hyraulic oil before installing

fitting (34).

2. Install new pump (3) in frame.

3. Install screws (9) and nuts (10). Torque to 225 + 10

in-lb (25.42 N.m).

4. Replace large pulley (4) on hydraulic pump shaft.

5. Align pulley (4) on shaft. When properly positioned

approximately 1/8 inch of shaft (139) will protrude.

3

ti7800

34

35

30

3

ti7816

(

34

3

35

30

ti7816

10

9

3

ti7778

4

ti7813

1/8 inch

4

139

ti7835

Hydraulic Pump Replacement

20 311283E

6. Replace set-screws (87). Tighten and torque to 60 +

2 in-lb (6.8 + 0.2 N•m).

NOTE: Tighten set-screw on shaft before tightening

set-screw on pump shaft.

7. Position belt (19) over pulleys (4, 6); Installing Belt,

page 21.

8. Replace belt cover (67) and grommets (80), wash-

ers (78) and screws (79), (2 each side). Torque

screws to 25-30 in-lb (2.8 -3.4 N•m).

9. Install suction lines. Tighten fittings. Torque fitting A

to 225 + 10 in-lb (25.4 + 1.1 N.m). Fitting B to 450

+10 in-lb (50.1 + 1.1. N.m). Fitting C to 225 in-lb

(25.4 N.m).

10. Install cover (140) and with four screws (79). Torque

to 25-30 in-lb (2.8 - 3.4 N•m). Install pump handle

cover (196) with screw (197).

11. Fill oil tank following Refilling Oil procedure on

page 17.

67

79

ti7810

ti7812

78

80

ti7767

ti7889

A

B

C

79

140

ti7111b

197 196

Hydraulic Pump Replacement

311283E 21

Belt Removal and Replacement

(recommended method)

Removing Belt

a. Place a ziptie around belt (19).

b. Slowly pull ziptie toward you while at the same

time slowly pulling engine recoil to rotate pul-

leys. It may be necessary to reposition zip tie

and repeat this procedure a few times to com-

pletely remove belt from pulley.

Installing Belt

a. Put belt over lower pulley (6) and align correctly.

b. Line up belt over top left side of large pulley (4).

c. With the palm of your hand, hold the belt snug

to large pulley while at the same time slowly pull

engine recoil to rotate pulleys.

d. Check belt (19) alignment on both large (4) and

small pulley (6). When properly positioned over

pulleys, belt is centered on pulleys and com-

pletely over all grooves.

NOTE: If belt is not aligned properly, to adjust belt, slowly

pull engine recoil while at the same time pushing or pull-

ing belt to reposition over pulley.

Moving parts can pinch or amputate fingers and other

body parts. To avoid serious injury be sure engine is in

OFF position before pulling engine recoil.

19

ziptie

ti7843

ti7842

ti7869

Properly Aligned Not Aligned Properly

ti7834 ti7837

Hydraulic Pump Replacement

22 311283E

Alternate Belt Removal and Installation

Removing Belt

a. Loosen engine bolts (21) to relieve tension on

belt.

b. Slide belt off pulleys.

Installing Belt

a. Install belt (19) over small (6) and large (4)

pulleys.

b. Tighten engine bolts (21). Torque to 225 + 10

in-lb (25.4 + 1.1 N.m).

c. Check belt (19) alignment on both large (4) and

small pulley (6). When properly positioned over

pulleys, belt should be centered on pulleys and

completely over all grooves.

NOTE: If belt is not aligned properly, to adjust belt, slowly

pull engine recoil while at the same time pushing or pull-

ing belt to reposition over pulley.

Properly Aligned Not Aligned Properly

ti7834 ti7837

4

6

19

21

ti7870

Hydraulic Pump Replacement

311283E 23

Replacing Oil Reservoir

Removal

1. Relieve pressure, page 5.

2. Drain oil from reservoir (64) following Draining Oil

procedure, page 17. Keep plug for use on new res-

ervoir.

3. Remove fill cap (27) and filter assembly (111). Keep

for use on new reservoir.

4. Loosen and remove suction hose (153).

5. Remove and keep suction fitting (32) for use on new

reservoir.

6. Loosen and remove return lines (100, 101).

Drain Plug

ti 7784

27

111

ti7785

153

ti7785

32

101

ti7803

100

Hydraulic Pump Replacement

24 311283E

7. Remove cooler line from reservoir (64).

8. Remove (2) top bolts (86) and 2 bottom nuts (84)

securing reservoir (64) to frame.

9. Lift reservoir (64) out of frame.

Installation

1. Install plug (102), return elbow (31), suction fitting

(32), inlet screen (89) and filter assembly (111) in

new reservoir (64).

ti7791

ti7846

ti7786

64

ti7806

27

111

32

102

31

89

Hydraulic Pump Replacement

311283E 25

2. Install new reservoir (64) in frame.

3. Replace bolts (86) and nuts (84). Tighten bolts.

Torque to 125 + 10 in-lb 14 + 1.1 N•m).

4. Connect coolant line to reservoir (64). Torque to 225

in-lb (14.1 N.m).

5. Reattach return lines (100, 101). Torque to 450 + 10

in-lb (51 + 1.1 N•m).

6. Reattach suction hose (153). Toque to 600 + 10

in-lb (68 + 1.1 N•m).

64

ti7781

ti7766

101

ti7777

100

153

ti7785

Hydraulic Pump Replacement

26 311283E

7. Verify drain plug has been replaced. Fill oil reservoir

with oil to high mark on dip stick (approximately 3.5

gallons).

8. Replace cap (27).

Drain Plug

ti7784

27

ti7785

Changing Hydraulic Fluid Filter

311283E 27

Changing Hydraulic Fluid Filter

Removal

1. Relieve pressure, page 5.

2. Loosen and remove hose (101) from fitting (103).

3. Remove filter housing (111) from reservoir (64).

4. Remove bottom filer cap (155) from housing (111).

5. Pull filter (108) off cap (155).

Installation

1. Install new o-ring (113) from kit.

2. Install new filter (108) over cap (155).

3. Install cap (155) and filter (108) in filter housing

(111). Hand tighten cap till snug. Then torque to 375

+ 10 in-lb (42 + 1.1 N•m).

4. Install filter housing (111) into reservoir.

5. Install fitting (103) in filter housing (111). Torque to

600 + 10 in-lb (67.8 + 1.1 N.m).

6. Reattach hose (101) to fitting (103). Torque to 450 +

10 in-lbs (51 + 1.1 N•m).

103

111

155

113

101

108

ti7763

Cooler Replacement

28 311283E

Cooler Replacement

Removal

1. Relieve pressure, page 5.

2. Loosen ground screw and remove ground clamp

(95) from sprayer.

3. Loosen and remove return line to oil tank and

hydraulic line to cooler.

4. Remove screws (79), washers (78) and support bar

(77) from cooling coil (72).

5. Remove coil (72) from sprayer frame.

95

ti7799

ti7802

72

77

79

78

ti7794

72

ti7792

Cooler Replacement

311283E 29

Installation

1. Install new coil (72). Replace support bar (77),

washers (78) and screws (79). Tighten screws.

2. Reconnect return line to oil tank and hydraulic line

to cooler. Torque to 225 in-lb (25.4 N.m).

3. Replace ground wire (95) and tighten screw. Torque

to 25-30 in-lbs (2.8 - 3.4 N.m).

4. Replace bar and screws. Torque to 25-30 in-lb

(2.8-3.4 N.m).

72

ti776 8

ti7776

95

ti7774

78

79

77

Motor Replacement

30 311283E

Motor Replacement

Removal

1. Relieve pressure, page 5.

2. Remove screws (79) and washers (78) and belt

cover (67).

3. Remove belt (19), page 21.

4. Remove screws (21), washers (70) and nuts (10)

securing motor (5) to frame.

5. Remove motor (5) from frame.

Replacing Motor Fan

Removal

a. Loosen and remove bolts (86) on front of fan

(14).

b. Pull fan (14) off small pulley (6).

Installation

a. Position new fan (14) over small pulley (6).

b. Replace bolts (86) and tighten securely.Torque

to 125 + 10 in-lb (14.1 + 1.1 N.m).

Removing Pulley (6)

NOTE: This procedure is only necessary if you

are replacing the motor. When you install a new

motor you reuse the existing pulley.

Removal

a. Loosen set screw (87) located on the side of the

pulley (6).

b. Remove large bolt (24) in the center of pulley

(6).

c. Pull pulley (6) off motor (5).

Installation

a. Position new pulley (6) on motor (5).

b. Install large bolt (24) and washer (65) in center

of pulley (6). Torque to 125 + 10 in-lb (14.1 + 1.1

N.m).

c. Tighten set screw (87). Torque to 60 + 2 in-lb

(25.4 N.m).

Installation

1. Install motor (5) in frame.

2. Replace all screws (21), washers (70) and nuts (10).

Tighten securely.

3. Install belt (19) over pulleys (4, 6), page 21.

4. Replace belt cover (67) and screws (79) and wash-

ers (78) (2 each side). Using a wrench tighten bolts.

Torque to 25-30 in-lb (2.8-3.4 N.m).

Motor Replacement

311283E 31

5

21

70

80 665 24

14

86

10

87

78

79

67

4

19

ti7797

Removing Handle

32 311283E

Removing Handle

Fixed Mounting (optional)

To prevent damaging the unit when transporting it in

a truck or on a trailer, Graco recommends fixed

mounting to the vehicle.

Repositioning Handle

Before you can secure the unit to a truck or trailer bed,

you must reposition the handle.

1. Remove the 4 handle sleeve screws (143).

2. Remove handle assembly (25) by pulling it out of

upper frame tubes (1).

3. Remove frame tube plugs (120) located behind the

wheels.

4. Insert plugs (120) in upper frame handle tubes (a).

5. Insert handle assembly (25) into lower frame tubes

(b). The hose bracket should face down. Adjust to

appropriate in/out location.

6. Install sleeve screws (143) in lower frame tubes.

143

25

1

120

120

(a)

2525

(b)

(b)

143

Removing Handle

311283E 33

Securing Unit to Vehicle Bed

For fixed mounting, fasten U-bolts over sprayer frame as

indicated in the following illustration.

1. Reposition handle, steps 1-5, page 32.

2. Place U-bolts over sprayer frame and through holes

in vehicle bed. Place a washer and nut over bolt

end. Using a wrench, tighten nut securely.

U-bolts

U-bolts

Reposition Handle

Technical Data

34 311283E

Technical Data

Sprayer GH833 Gas

Hydraulic Pressure psi (bar) 2750 (19.0)

Hydraulic Reservoir Capacity Gallon (liters) 4.0 (15.1)

Motor HP (kW) Honda 13 (9.7)

Maximum Delivery gpm (lpm) 4.0 (15.1)

Maximum Tip Size

• 1 gun .065

• 2 guns .046

• 3 guns .037

• 4 guns .032

• 5 guns .028

• 6 guns .026

Fluid Inlet inches 1-1/2 to 11-1/2 NPT (m)

Fluid Outlet inches 1 to 11-1/2 NPT (f)

Dimensions

Weight lb (kg) 360 (163)

Height inch (cm) 40 (101.6)

Width inch (cm) 27 (68.6)

Length inch (cm) 47 (119.3)

Sound Levels*

Sound Pressure 91 dB(A)

Sound Power 106 dB(A)

*measured at maximum normal load conditions

Graco-Approved Hydraulic Oil

169236 - 5 gallons (19 liters)

207428 - 1 gallon (3.8 liters)

Notes

311283E 35

Notes

All written and visual data contained in this document reflects the latest product information available at the time of publication.

Graco reserves the right to make changes at any time without notice.

Original instructions. This manual contains English. MM 311283

Graco Headquarters: Minneapolis

International Offices: Belgium, China, Japan, Korea

GRACO INC. P.O. BOX 1441 MINNEAPOLIS, MN 55440-1441

Copyright 2006, Graco Inc. is registered to ISO 9001

www.graco.com

Revised 06/2011

Graco Standard Warranty

Graco warrants all equipment referenced in this document which is manufactured by Graco and bearing its name to be free from defects in

material and workmanship on the date of sale to the original purchaser for use. With the exception of any special, extended, or limited warranty

published by Graco, Graco will, for a period of twelve months from the date of sale, repair or replace any part of the equipment determined by

Graco to be defective. This warranty applies only when the equipment is installed, operated and maintained in accordance with Graco’s written

recommendations.

This warranty does not cover, and Graco shall not be liable for general wear and tear, or any malfunction, damage or wear caused by faulty

installation, misapplication, abrasion, corrosion, inadequate or improper maintenance, negligence, accident, tampering, or substitution of

non-Graco component parts. Nor shall Graco be liable for malfunction, damage or wear caused by the incompatibility of Graco equipment with

structures, accessories, equipment or materials not supplied by Graco, or the improper design, manufacture, installation, operation or

maintenance of structures, accessories, equipment or materials not supplied by Graco.

This warranty is conditioned upon the prepaid return of the equipment claimed to be defective to an authorized Graco distributor for verification of

the claimed defect. If the claimed defect is verified, Graco will repair or replace free of charge any defective parts. The equipment will be returned

to the original purchaser transportation prepaid. If inspection of the equipment does not disclose any defect in material or workmanship, repairs will

be made at a reasonable charge, which charges may include the costs of parts, labor, and transportation.

THIS WARRANTY IS EXCLUSIVE, AND IS IN LIEU OF ANY OTHER WARRANTIES, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED

TO WARRANTY OF MERCHANTABILITY OR WARRANTY OF FITNESS FOR A PARTICULAR PURPOSE.

Graco’s sole obligation and buyer’s sole remedy for any breach of warranty shall be as set forth above. The buyer agrees that no other remedy

(including, but not limited to, incidental or consequential damages for lost profits, lost sales, injury to person or property, or any other incidental or

consequential loss) shall be available. Any action for breach of warranty must be brought within two (2) years of the date of sale.

GRACO MAKES NO WARRANTY, AND DISCLAIMS ALL IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A

PARTICULAR PURPOSE, IN CONNECTION WITH ACCESSORIES, EQUIPMENT, MATERIALS OR COMPONENTS SOLD BUT NOT

MANUFACTURED BY GRACO. These items sold, but not manufactured by Graco (such as electric motors, switches, hose, etc.), are subject to

the warranty, if any, of their manufacturer. Graco will provide purchaser with reasonable assistance in making any claim for breach of these

warranties.

In no event will Graco be liable for indirect, incidental, special or consequential damages resulting from Graco supplying equipment hereunder, or

the furnishing, performance, or use of any products or other goods sold hereto, whether due to a breach of contract, breach of warranty, the

negligence of Graco, or otherwise.

FOR GRACO CANADA CUSTOMERS

The Parties acknowledge that they have required that the present document, as well as all documents, notices and legal proceedings entered into,

given or instituted pursuant hereto or relating directly or indirectly hereto, be drawn up in English. Les parties reconnaissent avoir convenu que la

rédaction du présente document sera en Anglais, ainsi que tous documents, avis et procédures judiciaires exécutés, donnés ou intentés, à la suite

de ou en rapport, directement ou indirectement, avec les procédures concernées.

Graco Information

For the latest information about Graco products, visit www.graco.com.

TO PLACE AN ORDER, contact your Graco distributor or call 1-800-690-2894 to identify the nearest distributor.