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2165 5f6b01e9-24b8-4105-b676-499699830a70

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Operator’s Manual

MODELS 2165 / 2175 / 2185 / 2195

ASSEMBLY • OPERATION • MAINTENANCE

BACKHOES

703 $4.00 50033329

BUSH HOG,L.L.C.

CONGRATULATIONS!

You have invested in the best implement of its type on the market today.

The care you give your Great Bend implement will greatly determine your satisfaction

with its performance and its service life. We urge a careful study of this manual to provide

you with a thorough understanding of your new implement before operating, as well as

suggestions for operation and maintenance.

If your manual should become lost or destroyed, Great Bend will be glad to provide you with

a new copy. Order from Great Bend, P. O. Box 1039, Selma, Alabama 36702-1039.

As an authorized Great Bend dealer, we stock genuine Great Bend parts which are

manufactured with the same precision and skill as our original equipment. Our trained

service personnel are well informed on methods required to service Great Bend equipment,

and are ready and able to help you.

Should you require additional information or assistance, please contact us.

YOUR AUTHORIZED

GREAT BEND DEALER

BECAUSE GREAT BEND MAINTAINS AN ONGOING

PROGRAM OF PRODUCT IMPROVEMENT, WE

RESERVE THE RIGHT TO MAKE IMPROVEMENTS IN

DESIGN OR CHANGES IN SPECIFICATIONS WITH-

OUT INCURRING ANY OBLIGATION TO INSTALL

THEM ON UNITS PREVIOUSLY SOLD.

BECAUSE OF THE POSSIBILITY THAT SOME

PHOTOGRAPHS IN THIS MANUAL WERE TAKEN OF

PROTOTYPE MODELS, PRODUCTION MODELS MAY

VARY IN SOME DETAIL. IN ADDITION, SOME

PHOTOGRAPHS MAY SHOW SHIELDS REMOVED

FOR PURPOSES OF CLARITY. NEVER OPERATE

THIS IMPLEMENT WITHOUT ALL SHIELDS IN PLACE.

BACKHOES

Operator’s Manual

TABLE OF CONTENTS

SECTION/PARA PAGE

Warranty . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2

Dealer Preparation Check List . . . . . . . . . . . . . 3

Safety Procedures. . . . . . . . . . . . . . . . . . . . . . 5

Federal Laws and Regulations. . . . . . . . . . . . . 7

General Operation. . . . . . . . . . . . . . . . . . . . . . 8

Controls . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 8

Operating The Backhoe. . . . . . . . . . . . . . . . . . 9

Transporting The Backhoe. . . . . . . . . . . . . . . 10

Placing The Stabilizers . . . . . . . . . . . . . . . . . 11

Filling The Bucket . . . . . . . . . . . . . . . . . . . . . 12

Dumping The Bucket . . . . . . . . . . . . . . . . . . . 12

Trenching . . . . . . . . . . . . . . . . . . . . . . . . . . . 12

Back Filling . . . . . . . . . . . . . . . . . . . . . . . . . . 13

Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 14

Beginning Of Season. . . . . . . . . . . . . . . . . . . 14

Hydraulic System . . . . . . . . . . . . . . . . . . . . . 14

RETAIL CUSTOMER’S RESPONSIBILITY

UNDER THE GREAT BEND WARRANTY

It is the Retail Customer and/or Operator’s responsibility to read the Operator’s Manual, to operate, lubricate,

maintain, and store the product in accordance with all instructions and safety procedures. Failure of the opera-

tor to read the Operator’s Manual is a misuse of this equipment.

It is the Retail Customer and/or Operator’s responsibility to inspect the product and to have any part(s) repaired

or replaced when continued operation would cause damage or excessive wear to other parts or cause a safety

hazard.

It is the Retail Customer’s responsibility to deliver the product to the authorized Great Bend dealer from whom

he purchased it, for service or replacement of defective parts which are covered by warranty. Repairs to be sub-

mitted for warranty consideration must be made within forty-five (45) days of failure.

It is the Retail Customer’s responsibility for any cost incurred by the Dealer for traveling to or hauling of the

product for the purpose of performing a warranty obligation or inspection.

SECTION/PARA PAGE

Tooth Replacement 15

Lubrication 15

Removal / Storage 16

Stabilizer Pads 17

Hydraulic Trouble Shooting 17

Valve Repair 23

Assembly 24

Mounting Kit Instructions 25

PTO Pump Kits 30

Hydraulic Hook-Up To Tractor 31

Power Beyond Kit 35

Flow Divider Kit 38

General Specifications 42

Removing From Shipping Pallet 43

Safety Decals 44

Torque Specifications 45

Great Bend

LIMITED WARRANTY

✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯

Great Bend / Bush Hog L.L.C., warrants to the original purchaser of any new Great Bend equipment,

purchased from an authorized Great Bend dealer, that the equipment be free from defects in material and work-

manship for a period of one (1) year for non-commercial, state, and municipalities’ use and ninety (90) days for

commercial use from date of retail sale. The obligation of Great Bend / Bush Hog L.L.C. to the purchaser under

this warranty is limited to the repair or replacement of defective parts.

Replacement or repair parts installed in the equipment covered by this limited warranty are warranted

for ninety (90) days from the date of purchase of such part or to the expiration of the applicable new equip-

ment warranty period, whichever occurs later. Warranted parts shall be provided at no cost to the user at an

authorized Great Bend dealer during regular working hours. Great Bend reserves the right to inspect any equip-

ment or parts which are claimed to have been defective in material or workmanship.

DISCLAIMER OF IMPLIED WARRANTIES & CONSEQUENTIAL DAMAGES

Great Bend’s obligation under this limited warranty, to the extent allowed by law, is in lieu of all war-

ranties, implied or expressed, INCLUDING IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS

FOR A PARTICULAR PURPOSE and any liability for incidental and consequential damages with respect to the

sale or use of the items warranted. Such incidental and consequential damages shall include but not be limited

to: transportation charges other than normal freight charges; cost of installation other than cost approved by

Great Bend; duty; taxes; charges for normal service or adjustment; loss of crops or any other loss of income;

rental of substitute equipment, expenses due to loss, damage, detention or delay in the delivery of equipment or

parts resulting from acts beyond the control of Great Bend.

THIS LIMITED WARRANTY SHALL NOT APPLY:

1. To transportation to and from dealership or service calls made by dealers, ie, driving time, towing, pickup

and delivery.

2. To vendor items which carry their own warranties, such as engines, tires, and tubes.

3. If the unit has been subjected to misapplication, abuse, misuse, negligence, fire or other accident.

4. If parts not made or supplied by Great Bend have been used in connection with the unit, if, in the

sole judgement of Great Bend such use affects its performance, stability or reliability.

5. If the unit has been altered or repaired outside of an authorized Great Bend dealership in a manner

which, in the sole judgement of Great Bend, affects its performance, stability or reliability.

6. To normal maintenance service and normal replacement items such as gearbox lubricant, hydraulic fluid,

worn blades, or to normal deterioration of such things as belts and exterior finish due to use or

exposure.

7. To expendable or wear items such as teeth, chains, sprockets, belts, springs and any other items that in the

company’s sole judgement is a wear item.

NO EMPLOYEE OR REPRESENTATIVE OF GREAT BEND IS AUTHORIZED TO CHANGE THIS

LIMITED WARRANTY IN ANY WAY OR GRANT ANY OTHER WARRANTY UNLESS SUCH CHANGE IS

MADE IN WRITING AND SIGNED BY GREAT BEND’S SERVICE MANAGER, POST OFFICE BOX 1039,

SELMA, ALABAMA 36702-1039.

✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯✯

Record the model number, serial number and date

purchased. This information will be helpful to your

dealer if parts or service are required.

MAKE CERTAIN THE WARRANTY REGISTRATION

CARD HAS BEEN FILED WITH GREAT BEND/

SELMA, ALABAMA

MODEL NUMBER

SERIAL NUMBER

DATE OF RETAIL SALE

DEALER PREPARATION CHECK LIST

2165, 2175, 2185 and 2195 BACKHOES

BEFORE DELIVERING MACHINE - The following check list should be completed.

Use the Operator’s Manual as a guide.

❑Machine properly assembled.

❑All safety decals readable (See decal page).

❑All bolts tightened to torque specifications given in the torque chart.

❑Machine operates properly.

❑Operator’s manual has been delivered to owner and he has been instructed

on the safe and proper use of the backhoe.

Dealer’s Signature

CAUTION:

It is recommended that the tractor be equipped with Rollover

Protection System (ROPS) and seat belt be used for all

implement operations.

It is the responsibility of the dealer to complete the procedures listed

above before delivery of this implement to the customer.

THIS CHECKLIST TO REMAIN IN OWNER’S MANUAL

Safety Alert Symbol

This Safety Alert Symbol means: “ATTENTION! BECOME ALERT!

YOUR SAFETY IS INVOLVED!”

This symbol is used to call attention to safety

precautions that should be followed by the

operator to avoid accidents. When you see this

symbol, carefully read the message that follows

and heed its advice. Failure to comply with safe-

ty precautions could result in death or serious

bodily injury.

Safety Signs Signal Words

The signal words DANGER, WARNING, AND CAUTION are used on the equipment safety signs. These words

are intended to alert the viewer to the existence and the degree of hazard seriousness.

This signal word indicates a potentially hazardous situation

which, if not avoided, will result in death or serious injury.

White letters on RED

This signal word indicates a potentially hazardous situation

which, if not avoided, could result in death or serious injury

It may also be used to alert against unsafe practices.

Black letters on ORANGE

This signal word indicates a potentially hazardous situation exist

which, if not avoided, may result in minor or moderate injury.

It may also be used to alert against unsafe practices.

Black letters on YELLOW

IMPORTANT SAFETY PRECAUTIONS

This symbol is used to call attention to safe-

ty precautions that should be followed by

the operator to avoid accidents. When you

see this symbol, carefully read the message

that follows and heed its advice. Failure to

comply with safety precautions could result

in serious bodily injury.

In addition to the design and configuration of equipment, hazard control and accident prevention are dependent upon the

awareness, concern, prudence and proper training of personnel in the operation, transport, maintenance and storage of

equipment. Lack of attention to safety can result in accident, personal injury, reduction of efficiency and worst of all—loss

of life. Watch for safety hazards and correct deficiencies promptly. Use the following safety precautions as a general

guide to safe operations when using this machine. Additional safety precautions are used throughout this manual for

specific operating and maintenance procedures. Read this manual and review the safety precautions often until you know

the limitations.

THE TRACTOR

1. Read the tractor operator’s manual to learn how to operate your tractor safely. Failure to do so could result in seri-

ous injury or death and equipment damage.

2. It is recommended that tractor be equipped with Rollover Protective System (ROPS) and a seat belt be used for all

loader operations.

3. Add wheel ballast or front weight for stability.

4. Move wheels to the tractor manufacturer’s widest recommended settings to increase stability.

5. For better stability, use tractor with wide front axle rather than tricycle front wheels.

6. Move and turn the tractor at low speeds.

7. Stop tractor engine, place transmission in park (or neutral), engage parking brake, lower loader arms to ground,

cycle all hydraulic controls to relieve pressure, allow machine moving parts to stop, remove ignition key to prevent

unauthorized person from starting engine before dismounting tractor or servicing, repairing, or making adjustments

to the equipment.

8. Wear personal protective equipment (PPE) such as, but not limited to, protection for eyes, ears, lungs, head, hands

and feet when operating, servicing, or repairing equipment. Avoid wearing loose clothing or jewelry that may catch

and entangle on equipment moving parts.

THE BACKHOE

1. DO NOT operate the backhoe unless it is rigidly attached to the tractor or skid steer loader.

2. KNOW your controls. Read this operator’s manual and the manual provided with your tractor. Learn how to stop the

tractor, the engine and the backhoe quickly in an emergency.

3. PROVIDE adequate front end weight to counter-balance the backhoe at all times. 20% of the total tractor, loader and

backhoe weight must be on the tractor front axle. If unsure of weight distribution, determine at a weight scale. Total

vehicle weight , including backhoe and counter weights, must not exceed the ROPS certificate for gross vehicle weight.

4. BE SURE the area is clear of overhead or underground utilities or other hazards.

5. POSITION a barricade around the work area.

6. KEEP all bystanders a safe distance away.

7. DO NOT attempt to enter operator’s platform of backhoe by using the stabilizers as a step.

8. OPERATE from the backhoe operator’s seat only.

9. ALLOW only one person to operate the backhoe at any time.

10. DISENGAGE safety locks as shown in Figures 1 & 3 before attempting to operate the backhoe.

11. NEVER dig with the backhoe unless the stabilizers are properly set.

12. DO NOT dig under stabilizers or tractor backhoe. Soft ground or sandy soil can cause cave-ins.

13. KEEP BUCKET away from the stabilizer area to avoid possible stabilizer damage.

14. ALWAYS swing bucket uphill to dump when on a hillside and keep loaded bucket low.

15. SET BRAKES and block wheels when operating on hills and banks to avoid dangerous runaway.

16. WATCH for overhead wires. DO NOT touch wires with any part of the backhoe.

17. NEVER allow a person to work under a raised bucket.

18. NEVER lift a person with the backhoe.

19. DO NOT use the backhoe as a battering ram. Use the backhoe only for digging.

20. ALWAYS lower the backhoe bucket and stabilizers to the ground, shut off engine, and apply the parking brake

before getting off unit, or when not digging.

21. NEVER leave the tractor unattended with the engine running.

22. DO NOT attempt to raise the tractor off the ground or move the tractor forward or backward using the backhoe

dipperstick or bucket.

TRANSPORTATION

1. ALWAYS engage safety locks before transporting backhoe. See Figures 1 & 3.

2. DO NOT drive the tractor near the edge of a ditch or excavation.

3. ALWAYS use accessory lights and devices when transporting on a road or highway to warn operators of other

vehicles. Check your local government regulations.

4. BE SURE the SMV emblem is visible to the rear.

ADJUSTMENTS AND INSPECTION

1. CHECK pins that attach backhoe to tractor and all pivot pins for tightness several times daily. Replace any parts

that are bent, broken or missing.

2. ALWAYS engage safety locks before servicing backhoe. See Figures 1 & 3.

3. DO NOT oil, grease, or adjust the backhoe while it is in motion. For greasing, see Service section for details.

4. DO NOT change any backhoe relief valve settings. They are factory set for best backhoe performance and safety.

5. PROTECT YOUR EYES - WEAR SAFETY GLASSES.

6. GUARD AGAINST INJURY when driving connecting pins or performing any repair in which particles can chip from

work piece or striking tool.

7. DO NOT remove any guards on backhoe or tractor.

AVOID HIGH-PRESSURE FLUIDS

SAFETY PRECAUTIONS CONTINUED

ESCAPING fluid under pressure can have sufficient force to penetrate the skin

and cause serious injury. Be sure to stop engine and relieve all pressure before

disconnecting lines. Be sure all connections are tight and that lines, pipes, and

hoses are not damaged before applying pressure to the system. Fluid escaping

from a very small hole can be almost invisible. Use a piece of cardboard or wood

- not your hands-to search for suspected leaks.

SEE A DOCTOR at once if injured by escaping fluid. Serious infection or gan-

grene can develop if proper medical treatment is not administered immediately.

IMPORTANT FEDERAL LAWS AND REGULATIONS* CONCERNING

EMPLOYERS, EMPLOYEES AND OPERATIONS.

*(This section is intended to explain in broad terms the concept and effect of the following federal laws and

regulations. It is not intended as a legal interpretation of the laws and should not be considered as such).

U.S. Public Law 91-596 (The Williams-Steiger Occupational Safety and Health Act of 1970) OSHA

This Act Seeks:

“...to assure so far as possible every working man and woman in the nation safe and healthful working

conditions and to preserve our human resources...”

DUTIES

Sec. 5 (a) Each employer—

(1) shall furnish to each of his employees employment and a place of employment

which are free from recognized hazards that are causing or are likely to cause

death or serious physical harm to his employees;

(2) shall comply with occupational safety and health standards promulgated under

this Act.

(b) Each employee shall comply with occupational safety and health standards

and all rules, regulations and orders issued pursuant to this Act which are

applicable to his own actions and conduct.

OSHA Regulations

Current OSHA regulations state in part: “At the time of initial assignment and at least annually thereafter, the

employer shall instruct every employee in the safe operation and servicing of all equipment with which the

employee is, or will be involved.” These will include (but are not limited to) instructions to:

Keep all guards in place when the machine is in operation;

Permit no riders on equipment;

Stop engine, disconnect the power source, and wait for all machine movement to stop before

servicing, adjusting, cleaning or unclogging the equipment, except where the machine must be

running to be properly serviced or maintained, in which case the employer shall instruct employees

as to all steps and procedures which are necessary to safely service or maintain the equipment.

Make sure everyone is clear of machinery before starting the engine, engaging power, or operating

the machine.

Child Labor Under 16 Years Old

Some regulations specify that no one under the age of 16 may operate power machinery. It is your

responsibility to know what these regulations are in your own area or situation. (Refer to U.S. Dept. of

Labor, Employment Standard Administration, Wage & Home Division, Child Labor Bulletin #102.)

EMPLOYEE TRACTOR OPERATING INSTRUCTIONS:

1. Securely fasten your seat belt if the tractor has a

ROPS.

2. Where possible, avoid operating the tractor near

ditches, embankments, and holes.

3. Reduce speed when turning, crossing slopes,

and on rough, slick, or muddy surfaces.

4. Stay off slopes too steep for safe operation.

5. Watch where you are going, especially at row

ends, on roads, and around trees.

6. Do not permit others to ride.

7. Operate the tractor smoothly - no jerky turns,

starts, or stops.

8. Hitch only to the drawbar and hitch points recom-

mended by tractor manufacturers.

9. When tractor is stopped, set brakes securely and

use park lock if available.

GENERAL OPERATION

CAUTION

To avoid possible injury,

observe the following

safety rules BEFORE

OPERATING the backhoe:

1. BE SURE area is clear of

underground utilities or

other hazards.

2. POSITION barricade

around work area.

3. PROVIDE adequate

front end weight to

counter-balance tractor at

all times. 20% of the total

tractor, loader and back-

hoe weight must be on the

tractor front axle.

4. Keep bystanders a safe

distance away.

DIRECTIONS: The terms right, left, front and back

shall be determined from the position of the operator

when seated in the operating position on the backhoe.

Engine Speed

The speed at which the backhoe operates is partially

dependent on engine RPM. Use a moderate engine

speed to start and increase it as your experience per-

mits. Refer to “SPECIFICATIONS” for hydraulic flow

volume requirements. When powering from tractor

systems with higher output, reduce engine RPM to

obtain acceptable backhoe operating speed.

Boom

Dipper-Stick

Boom Transport

Lock Pin Location

Stabilizer

Bucket

Link

Stabilizer Cylinder

Figure 1

CONTROLS

The backhoe has two major control levers plus the

stabilizer control levers. These controls are located on

the control console directly ahead of the operator. See

Figure 2. The following is a list of the controls, with the

function of each, reading from left to right.

1. Left Hand Stabilizer: Push lever forward, the LH

stabilizer lowers. Pull lever back, the LH stabilizer

raises.

2. Boom/Swing: Push lever forward, the boom

moves down, away from the operator. Pull lever back,

the boom moves up, toward the operator.

The Boom/Swing Control Lever has an added “float”

function. A detent or stop should be felt when the lever

is pushed forward to move the boom down. Pushing

the lever forward more will overcome the detent and

cause the boom to float, or move down or up freely,

depending on the forces acting on it. When the lever

is released it should return to the center, neutral posi-

tion.

Move lever to the left, the backhoe swings to the left.

Move lever to the right, the backhoe swings to the

right.

By moving the lever to one of the intermediate posi-

tions, the boom can be swung left or right at the same

time it is being raised or lowered, performing the two

operations simultaneously.

SWING LEFT AND LOWER the boom by moving the

control lever forward and to the left.

Mainframe

Left Hand Stabilizer

BOOM &

SWING CROWD &

BUCKET

Right Hand Stabilizer

Swing

Lock Pin Location

Figure 2 Control Handles

SWING LEFT AND RAISE the boom by moving the

control lever back and to the left.

SWING RIGHT AND LOWER the boom by moving

the lever forward and to the right.

SWING RIGHT AND RAISE the boom by moving the

lever back and to the right.

3. Crowd/Bucket: Push lever forward, the dipperstick

moves out, away from the operator. Pull lever back,

the dipperstick moves in, toward the operator.

Move lever to left, the bucket curls in. Move lever to

right, the bucket extends out.

By moving the lever to one of the intermediate posi-

tions, the dipperstick can be extended or retracted at

the same time the bucket is being loaded or dumped.

EXTEND AND LOAD the bucket by moving the lever

forward and to the left.

RETRACT AND LOAD the bucket by moving the

lever back and to the left.

EXTEND AND DUMP the bucket by moving the lever

forward and to the right.

RETRACT AND DUMP the bucket by moving the

lever back and to the right.

The two operations of the boom/swing lever, com-

bined with the two operations performed by the

crowd/bucket control lever, provide four simultaneous

operations from the two levers, keeping cycle time to

a minimum.

4. Right Hand Stabilizer: Push lever forward, the RH

stabilizer lowers. Pull lever back, the RH stabilizer

raises.

OPERATING THE BACKHOE

To avoid possible injury, observe the following

safety rules WHEN OPERATING the backhoe.

1. DISENGAGE safety lock pins as shown in

Figure 3 before attempting to operate the back-

hoe. Store lock pins in angled tubes located at the

rear right hand side of the backhoe below the foot

platform. See Figure 3a.

2. OPERATE from the backhoe operator’s seat

only.

3. LOWER the stabilizers until the rear of the trac-

tor is totally supported by them. NOTE: Rear tires

should not come up off of the ground. See dia-

gram on Page 11.

4. DO NOT dig near the stabilizers.

5. DO NOT touch overhead wires with any part of

the backhoe.

6. DO NOT attempt to raise the tractor off the

ground or move the tractor forward or backward

using the backhoe dipperstick or bucket.

7. DO NOT lose stability by swinging the bucket

downhill when positioned on a slope.

8. DO NOT lower the backhoe boom using the

“float” function. It will freefall, and could result in

injury to bystanders or damage to the backhoe.

CAUTION

In general, the direction of movement of a control

lever corresponds to the movement of the operating

member.

Figure 3 Safety Locks

Swing Lock Pin Boom Transport Lock Pin

Figure 3a

Lock Pins

Storage Tubes

Smooth, light handling of the controls will result in the

most efficient backhoe operation.

Operate the backhoe control levers to become famil-

iar with their speed and movements. The engine

speed and the size of the hydraulic system will deter-

mine the speed of cylinder operation. When powering

from tractor systems with higher output than required,

reduce engine RPM to obtain acceptable backhoe

operating speed. If backhoe is to be mounted to a

tractor or to a skid steer loader with a hydraulic flow

rate exceeding 12 gallons per minute (gpm), then the

backhoe must be equipped with a Flow Divider Kit.

Refer to “Flow Divider Kit” section of this manual for

assembly and installation instructions.

Swing the boom several times to practice controlling

the speed of swing. Do not operate the swing more

than 45° each way for the first few times, then gradu-

ally increase the arc.

IMPORTANT: To avoid damage to the backhoe, do

not slam unit into the rubber bumpers when

swinging the boom right or left.

The boom “float” function may be used during digging

to eliminate down pressure when cleaning the bottom

of a trench. The primary purpose of the boom “float”

function is to protect the operator from serious injury in

the event that the backhoe or tractor hitch would fail.

operator to save time in clearing the excavation.

This dual operation of controls will speed and simplify

the digging operation. Normally the two or more

movements will not be equal or even simultaneous,

but as the pressure within the cylinders changes, and

the resistance on an operating member of the hoe

lessens, it will begin to move. It is balancing the force

of one member against the other.

NOTE: Actuating the bucket is the key to powerful dig-

ging. Operating the crowd and bucket controls simul-

taneously will insure a full bucket and prevent waste

motion and time.

TRANSPORTING THE BACKHOE

IMPORTANT: To prevent serious damage to the

tractor, read and follow the instructions on the fol-

lowing decal:

Location: Right Side of Boom

It is not difficult to become an efficient operator.

Control lever operating decal is located on back of the

control console. Study this decal. It will assist you in

becoming familiar with the controls.

Best results are obtained by digging near the center

of the swing arc so material can be dumped on either

side.

As the operator becomes more familiar with the oper-

ation of the backhoe, it will be common practice to

operate two controls at one time. For example, with

the bucket extended and the dipperstick extended,

the lift control and crowd control can be operated

together to bring the bucket toward the operator with

down pressure on it. As the dipperstick approaches

the operator, the crowd and bucket controls can be

operated to close the bucket and trap the material. At

the end of the stroke, the lift and crowd controls are

operated to move the load up and away from the

Location: Back Of Control Panel

IMPORTANT

IMPROPER TRANSPORTING

METHODS CAN CAUSE SER-

IOUS DAMAGE TO TRACTOR.

•

ENGAGE BOTH SAFETY LOCKS

WHEN TRANSPORTING BACKHOE.

•

TRAVEL SLOWLY OVER ROUGH

TERRAIN.

•

WHEN TRANSPORTING ON TRUCK

OR TRAILER, LOWER BACKHOE

BOOM SO BUCKET RESTS

FIRMLY ON BED. APPLY

RESTRAINTS TO TRACTOR, NOT

TO BACKHOE OR BACKHOE

ATTACHING KIT.

50102295

CAUTION

To avoid possible injury, observe the following safety

rules when transporting the backhoe:

1. ALWAYS engage safety locks as shown on Figs. 1

and 3 when transporting backhoe.

2. TRAVEL SLOWLY over rough terrain, on hillsides,

and around curves to prevent tipping.

3. DO NOT drive the tractor near the edge of a ditch

or excavation.

4. USE accessory lights and SMV emblem when trav-

eling on highways.

Before leaving backhoe operator’s seat, position the

backhoe for transport by raising boom, crowding dip-

perstick in, swinging to center and raising the stabiliz-

ers.

When transporting for long distances, periodically

examine the backhoe and raise stabilizers and buck-

et back up to the full transport height. It is normal for

the backhoe to slowly settle while being transported.

PLACING THE STABILIZERS

Decreased

Digging

Depth

Narrower

Stabilizer

Platform Stabilizers Improperly Positioned

Stabilizers Properly Positioned

Set the stabilizers to remove weight from the rear wheels. The wheels are to remain touching the ground as this

provides for the widest stabilizer stance and the lowest center of gravity. Raising the wheels off the ground will

not only reduce stability and digging depth, but will impair performance and impose unnecessary stress on the

unit.

WHEN TRANSPORTING

Note:

Bucket should be

lowered to bed

when possible.

DO NOT attach hold down

chains anywhere on backhoe

assembly.

Block and secure

tractor only.

DO NOT CHAIN BACKHOE DOWN IN ORDER

TO SECURE TRACTOR TO TRAILER

CAUTION

Figure 4

General Operations

FILLING THE BUCKET

Control the bucket attitude throughout the digging cycle to

keep teeth at the proper angle for best penetration. This will

minimize dragging and scraping the bucket through the

ground.

When digging in hard-packed soil, bucket penetration can

be increased by applying down pressure with the boom

while crowding in and curling the bucket. If the crowd action

“stalls” it may be necessary to apply lift occasionally during

the digging cycle to correct the bucket depth.

To obtain a cleaner trench and avoid the buildup of materi-

al directly in front of the backhoe, crowd out and complete-

ly curl the bucket while starting to lift it from the excavation.

In this way, excess material will fall back into the excavation.

DUMPING THE BUCKET

To dump the bucket at the end of the digging cycle, lift the

bucket clear of the trench while crowding it out and swing-

ing it to the spoil pile.

As the pile is approached, dump the bucket. When the

bucket is empty, the dipperstick and bucket are in position

to resume digging upon return to the trench.

IMPORTANT: Avoid constant jarring or hammering-type

contact between the spoil pile and the loaded bucket, as this

may cause premature wear to the backhoe pins and bush-

ings.

TRENCHING BETWEEN A BUILDING AND

OPEN EXCAVATIONS

Start the trench at the building. Trench out halfway to the

excavation. Then start trenching from the excavation to the

first trench. Dig toward the first trench until there is just

enough room to move the unit out between the two tren-

ches.

Position the unit so the backhoe swing post is over the cen-

terline of the trench connection. Dig with the backhoe at

extreme swing positions, and in as close to the stabilizers

as possible. Pile the spoil on the opposite side of the tren-

ches.

Position the unit forward with the lift and crowd levers so

the two trenches can be connected. Pile the spoil on the

opposite side of the trench.

General Operations

SIDE SLOPE EXCAVATING OR TRENCHING

Dig with the backhoe uphill whenever possible.

Level the backhoe on slopes with the stabilizers to dig

plumb trenches, or use the backhoe or loader to cut a level

slot for the uphill wheel and stabilizer. Pile the spoil from the

slot on the low side.

When on the side of a steep slope, cut a level surface along

the uphill side of the trench with the loader.

Pile the spoil of the cut downhill. When digging, pile the spoil

of the trench uphill.

Dig field trenches progressively. As soon as one trench is

completed, have the workmen lay the tile. Start the next

trench, using the spoil to fill the previous trench.

MISCELLANEOUS

When finishing straight walls or bellholes in sandy soil, use

a platform under the rear tires and the stabilizers. The plat-

form distributes the load over a larger area and lessens the

possibility of a cave-in. The platform also tends to keep the

unit from creeping rearward if hard digging is encountered.

FINISHING STRAIGHT WALLS

Finish the far wall by crowding out while forcing the bucket

down from the boom. Actuate the bucket (curl out) to keep

the bottom of the bucket vertical.

To finish the near wall, lift up and crowd in. Keep the edges

of the bucket horizontal.

BACKFILLING

Backfill by lifting the bucket over the spoil pile and then

crowding in. Pull both the crowd and lift levers for smooth,

even backfilling.

IMPORTANT: Do not backfill by using the swing circuit

and dragging the bucket sideways. Doing so can cause

damage to the dipperstick, boom, or swing cylinders

and/or the mainframe.

fully several times to purge the system of air.

Hydraulic System Hoses

Oil leaks in the pressure side of the system can be

located by carefully inspecting the external area of the

hoses and fittings.

Check the return side of the system for leaks by

examining the oil in the reservoir. If air is being drawn

into the system, the oil will contain air bubbles and

appear to foam.

When tightening connections, always use two

wrenches.

IMPORTANT: Do not over-tighten fittings. Make them

just tight enough to eliminate leaks.

NEVER use teflon tape on pipe thread fittings.

Always use a paste-type sealer.

Hoses on any backhoe are very severely worked and

will fail in time. Examine them regularly and replace

any that show signs of failure. Pay careful attention to

the routing of hoses so they can move fully and freely

without kinking, and cannot be pinched or cut by any

part of the backhoe.

Hydraulic System Reservoir

On PTO pump systems, maintain the reservoir oil at the

proper level by looking at the dipstick. The

dipstick/breather cap is located directly behind the right

side of the foot platform on the backhoe. When check-

ing oil level, the backhoe should be extended to full

reach with the bucket rolled back and resting on the

ground. All cylinders are retracted except for the boom

cylinder. Do not overfill; oil may be forced out of the

breather cap.

Fill with:

SAE 10W40 engine oil with API “SF/SG” classifica-

tion in northern climates.

SAE 40W engine oil with API “SF/SG” classification

in southern climates.

Change oil every 200 hours or more often if neces-

sary. To change oil, extend backhoe to full reach with

bucket rolled back and resting on ground. Turn off

tractor PTO and shut down tractor engine. Unseat

breather cap from fill tube and remove drain plug from

left rear underside of hydraulic reservoir using 1/4”

hex wrench. Drain oil from reservoir and replace drain

plug. Refill reservoir with 7 gallons of fresh oil fol-

lowing guidelines listed above for proper oil

selection. Reseat breather cap and start engine and

PTO. After cycling all backhoe functions several times

to remove any air from hydraulic system, check oil

level in reservoir with backhoe extended to full reach

and bucket rolled back and resting on ground. If oil

level on dipstick is below “ADD” line, add enough oil

to bring level up to “FULL” line. DO NOT overfill reser-

voir or oil may be forced out through breather cap dur-

ing backhoe operation.

If the tractor system supplies the hydraulic power, ser-

vice according to the tractor instruction manual.

SERVICE

CAUTION

To avoid possible injury, observe the following

safety rules WHEN SERVICING the backhoe:

1. ENGAGE safety locks as shown in Figures 1 & 3

before servicing the backhoe.

2. DO NOT oil, grease or adjust the backhoe while it

is in motion.

3. DO NOT change any backhoe relief valve settings.

They are factory set for best performance and safety.

4. ESCAPING FLUID under

pressure can have sufficient

force to penetrate the skin and

cause serious injury. Be sure

to relieve all pressure before

disconnecting lines. Be sure

all connections are tight and

that lines, pipes and hoses are not damaged before

applying pressure to the system.

5. FLUID ESCAPING from a very small hole can be

almost invisible. Use a small piece of cardboard or

wood - not your hands - to search for suspected leaks.

6. SEE A DOCTOR AT ONCE if injured by escaping

fluid. Serious infection or gangrene can develop if

proper medical treatment is not administered immedi-

ately.

7. PROTECT YOUR EYES - Wear safety glasses.

Guard against injury when driving connecting pins or

performing any repair in which particles can chip from

work piece or striking tool.

BEGINNING OF SEASON

Remove all protective coverings.

Check hydraulic hoses for deterioration and replace,

if necessary.

Lubricate all grease fittings and oil handle linkages.

Check hydraulic system for loss of fluid and, if neces-

sary, fill to proper level.

Tighten all loose bolts, nuts and setscrews.

Inspect bucket teeth and, if necessary, sharpen or

replace them.

Operate the backhoe slowly for a short time before

placing the unit under full load.

Bleeding Backhoe Hydraulic System

If the hydraulic hoses have been disconnected from

the backhoe or tractor, all trapped air must be

removed after the hoses are connected. Start tractor

engine and operate backhoe through all movements

TOOTH REPLACEMENT

Bolt-On tooth points, when worn, can be replaced by

removing the hardware that connects it to the cutting

edge. Install new tooth and replace hardware if nec-

essary. (Figure 5)

Roll-Pinned tooth points, when worn, can be replaced

by driving out the roll pin with a hammer and punch.

Install the new tooth using a new roll pin and hammer.

(Figure 6)

Economical and efficient operation of the backhoe is

dependent upon regular and proper lubrication of all

moving parts with a quality lubricant.

All parts provided with grease fittings should be lubricat-

ed with a good quality chassis lube type grease. If any

grease fittings are missing, replace them immediately.

Clean all fittings thoroughly before using grease gun.

Lubricate all grease fittings at least twice daily, once

at the beginning of operation and again approximate-

ly halfway through the work day.

Lower stabilizers to the ground and lower boom so

bucket rests on the ground as shown in Figures 7 and

8. Refer to these illustrations for the location of all

grease fittings.

IMPORTANT: Before greasing boom to swing frame

pivot (*) shown in Figures 7 and 8, raise boom and

install transport lock pin shown in Figure 1.

On Models 2165, 2175, 2185 and 2195 the follow-

ing locations should be oiled with SAE30 oil:

A. All Control Handle Linkages

B. Seat Bracket Pivot

Figure 6

Roll-Pin Tooth

LUBRICATION

IMPORTANT: Avoid excessive greasing. Dirt collects

on exposed grease and increases wear greatly. After

greasing, wipe off excessive grease from fittings.

Figure 5

Bolt-On Tooth Nut

Bolt

Point

Roll-Pin

Figure 7 Lubrication Points

2165 & 2175

Tightening Nuts and Bolts

Periodically, check to be sure all bolts and nuts are

tight. See torque chart, page 45 .

Check all pivot pins for cotter pins, washers and

retainers; if missing, replace.

Figure 8 Lubrication Points

2185 & 2195

(3)

(2) (2)

(2)

REMOVAL FROM TRACTOR - STORAGE

The backhoe is self-assisting during the installation

and removal procedures. For removal and storage,

follow these steps:

1. Install the swing safety lock pin as shown in

Figures 1 and 3.

2. Stretch out the boom, dipper stick and bucket as

shown in Figure 9. Lower the bucket to the ground so

that it rests there solidly.

3. Raise the backhoe operator’s seat to the raised

position.

4. Place suitable blocking under the backhoe frame to

support it adequately as indicated in Figure 9.

5. Detach the backhoe from the tractor mechanically

only, not hydraulically at this point. Move the tractor a

few inches away from the backhoe.

Note: To facilitate this procedure, the backhoe can still

be hydraulically moved, raised or lowered, to release

the connection points of the carrying forces.

6. Gently lower the backhoe onto the blocking as indi-

cated in Figure 9. Leave the stabilizers outstretched

and firmly in contact with the ground for added stabil-

ity.

7. The hydraulic system can now be disconnected.

CAUTION

Make sure tractor PTO is disengaged and engine

shut off before disconnecting pump or hydraulic

lines.

a. On PTO pump self-contained systems, the pump

should be removed from the PTO shaft. The hydraulic

system should always remain complete. No hoses or

oil lines should be disconnected during correct

removal and storage procedure.

b. On systems that tap into the tractor for hydraulic

power, these lines can be disconnected now.

IMPORTANT: Be sure to mark the lines to prevent

mix-up during hook-up when the hoe is again

attached to the tractor.

Be sure to cap the ends of the lines to keep clean

while in storage.

8. Now slowly drive the tractor forward and away from

the backhoe. Be careful that all parts clear each other

during separation.

9. Refer to the installation instructions for the attach-

ing kit. This will help with the removal and reattaching.

10. For long term storage, coat exposed lift, swing

and stabilizer cylinder rods with grease.

11. Lubricate all grease fittings and oil all handle link-

ages and seat bracket pivot.

Backhoe Partially Extended

Figure 9

Backhoe Fully Extended

Blocking For Support

STABILIZER PADS

The backhoe is supplied with flip-over stabilizer feet

as standard equipment. They are suitable for most

backhoe work and generally are all that is ever

required. However, foot pad kits are available as

options. These kits bolt to the standard feet and

increase the versatility of the backhoe. See Figure 10.

Hydraulic Trouble Shooting

The trouble shooting material presented in this sec-

tion is offered as a guide to diagnosing probable caus-

es and remedies for general operational problems.

Match your problem with the typical problem exam-

ples given, and note the possible cause and the prop-

er corrective action.

NOTE: When using the following chart, if it is decided

that an overhaul of components or pressure adjust-

ments are necessary to correct malfunctioning, it is

recommended that your dealer make these repairs.

He is equipped to do this work.

Figure 10

WARNING

Escaping hydraulic / diesel fluid under pressure

can penetrate the skin causing serious injury.

Do not use your hand to check for leaks. Use a

piece of cardboard or wood to check for leaks.

Stop engine and relieve pressure before con-

necting or disconnecting lines.

If any liquid is injected into the skin, obtain med-

ical attention immediately or gangrene may

result.

TROUBLESHOOTING PROCEDURES

Problem Cause Correction

Machine fails to operate

when started initially Low oil supply in reservoir Fill to proper level.

No oil supply to machine Oil is not being diverted from the

prime mover hydraulic system.

Be sure that the proper controls are

actuated on the prime mover.

Pump not running Check pump drive to be sure it is

engaged.

Improper hose connection IMPORTANT: Be sure inlet and return

hoses are hooked up correctly.

Improper hook-up will result in

damage to the backhoe valve.

Excessive back pressure Relieve condition. Restriction may be

from outlet to reservoir.

Relief valve setting in backhoe Relief pressure will have to be checked

control valve too low or and corrections made. Backhoe

defective system pressure is 2400 PSI. Relief valve

may need cleaning and or overhauling or

entire cartridge must be replaced.

Machine loses power after Low oil supply in Fill to proper level.

operating satisfactorily reservoir

initially Loose oil line connections, Tighten all hose connections and

leaks in line or broken lines replace any damaged O-rings at

leaking O-ring fittings. Check and

replace any damaged hoses and lines.

Oil is bypassing cylinder piston, Replace or rebuild the cylinder; replace

scored piston, worn piston damaged parts.

packing, or defective piston

assembly

TROUBLESHOOTING (Continued)

Problem Cause Correction

Machine loses power after Diverter valve on prime move Diverter valve may need rebuilding or

operating satisfactorily leaking or bypassing oil internally replacing.

initially through valve to reservoir

Excessive back pressure Relieve condition. Restriction may be

from outlet to reservoir.

Relief valve setting in backhoe Relief pressure will have to be checked

control valve too low or defective and corrections made. Backhoe

system pressure is 2400 PSI. Relief

valve may need cleaning and over-

hauling, or entire cartridge must

be replaced.

Loss of power in lift or Spool not moved to full stroke Check spool travel- should be .26”

crowd cylinder, but other either way, or a total of .52”.

cylinders function properly Overload relief valve in the control Clean relief carefully but do not disturb

valve stuck open or malfunctioning its pressure setting as it cannot be field

calibrated, or replace cartridge.

Problems involving the control This valve is a precision device and is

valve not intended for any extensive field

adjustment or repair. Field replace-

ment parts are limited to seal kits,

cartridges, valve sections and tie rods.

Replacement of these parts, the

opening of check cavities and certain

relief cavities to examine for trapped

dirt, or resetting of the main relief valve

with the use of good pressure gauge,

should be referred to qualified service

personnel.

Dirt and shreds of packing material are

the usual causes of valve malfunction.

Be sure the reservoir oil supply is kept

clean and only factory supplied

packings are used in cylinder repair.

Everything must be clean and free of

dirt during oil line removal and

replacement, and during any cylinder

work.

Loss of power in any one Loose oil line connections, Tighten all hose connections and

cylinder, including lift leaks in line or broken lines replace any damaged O-rings at

and crowd leaking O-ring fittings. Check and

replace any damaged hoses and lines.

Restrictions in oil lines Check and replace any damaged hoses

and lines. Check for pinched hoses.

Oil is bypassing cylinder piston, Replace or rebuild the cylinder; replace

scored piston, worn piston damaged parts.

packing, or defective piston

assembly

Scored piston rods and worn Replace or rebuild the cylinder; replace

guides in cylinder damaged parts.

Bent piston rod in cylinder Replace or rebuild the cylinder; replace

damaged parts.

Troubleshooting (Continued)

Problem Cause Correction

Loss of power in any one Worn or damaged rod seals on Repack cylinder. Rebuild cylinder,

cylinder, including lift cylinder; external leaks replacing damaged parts as necessary.

and crowd

Spool not moved to full stroke Check spool travel - should be .26”

either way, or a total of .52”.

Overload relief valve in the control Clean relief carefully but do not disturb

valve stuck open or malfunctioning its pressure setting as it cannot be field

calibrated, or replace cartridge.

Worn control valve Replace the control valve.

Loss of power in swing Loose oil line connections, Tighten all hose connections and

cylinders, but other leaks in line or broken lines replace any damaged O-rings at

cylinders functioning leaking O-ring fittings. Check and

properly. replace any damaged hoses and lines.

Restrictions in oil lines Check and replace any damaged hoses

and lines. Check for pinched hoses.

Oil is bypassing cylinder piston, Replace or rebuild the cylinder; replace

scored piston, worn piston damaged parts.

packing, or defective piston

assembly

Scored piston rods and worn Replace or rebuild the cylinder; replace

guides in cylinder damaged parts.

Bent piston rod in cylinder Replace or rebuild the cylinder; replace

damaged parts.

Worn or damaged rod seals on Repack cylinder. Rebuild cylinder,

cylinder; external leaks replacing damaged parts as necessary.

Spool not moved to full stroke Check spool travel - should be .26”

either way, or a total of .52”.

Relief valve setting in backhoe Relief pressure will have to be checked

control valve too low or defective and corrections made. Backhoe

system pressure is 2400 PSI. Relief

valve may need cleaning and over

hauling, or entire cartridge must be

replaced.

Worn control valve Replace the control valve.

Maximum swing action Bent piston rod in cylinder Replace or rebuild the cylinder; replace

cannot be obtained damaged parts.

Something jamming the swing Remove interference.

linkage

Slow operation of machine

(lack of power) all cylinders Low oil supply in reservoir Fill to proper level.

Oil viscosity too heavy, or oil Use recommended hydraulic fluid. Run

is not at operating temperature machine until oil reaches operating

temperature.

Insufficient pumping Advance engine throttle.

Diverter valve on prime mover Diverter valve may need rebuilding or

leaking externally or bypassing replacing.

oil internally through valve to

reservoir

Excessive back pressure Relieve condition. Restriction may be

from outlet to reservoir.

Troubleshooting (Continued)

Problem Cause Correction

Slow operation of machine Relief valve setting in backhoe Relief pressure will have to be checked

(lack of power) all cylinders control valve too low or defective and corrections made. Backhoe

system pressure is 2400 PSI. Relief

valve may need cleaning and over-

hauling, or entire cartridge must be

replaced.

Spongy or jerking action Low oil supply in reservoir Fill to proper level.

of cylinders and/or noisy

operation Air in system Bleed all circuits of air by operating

machine at maximum oil flow and

through full movements.

Oil viscosity too heavy, or Use recommended hydralic fluid. Run

oil is not at operating machine until oil reaches operating

temperature temperature.

Pump not running Check pump drive to be sure it is

engaged.

Lift, crowd or bucket Damaged or worn spool Replace spool end seals.

cylinders drop under load seals

when control spools

shifted from neutral Problems involving the control This valve is a precision device and is

valve not intended for any extensive field

adjustment or repair. Field replace-

ment parts are limited to seal kits,

cartridges, valve sections and tie rods.

Replacement of these parts, the

opening of check cavities and certain

relief cavities to examine for trapped

dirt, or resetting of the main relief valve

with the use of good pressure gauge,

should be referred to qualified service

personnel.

Dirt and shreds of packing material are

the usual causes of valve malfunction.

Be sure the reservoir oil supply is kept

clean and only factory supplied

packings are used in cylinder repair.

Everything must be clean and free of

dirt during the oil line removal and

replacement, and during any cylinder

work.

Load drops or settles Loose oil line connections, Tighten all hose connections and

leaks in line or broken lines replace any damaged O-rings at

leaking O-ring fittings. Check and

replace any damaged hoses and lines.

Oil is bypassing cylinder piston, Replace or rebuild the cylinder; replace

scored piston, worn piston damaged parts.

packing, or defective piston

assembly

Worn or damaged rod seals on Repack cylinder. Rebuild cylinder,

cylinder; external leaks replacing damaged parts as necessary.

Worn control valve Replace the control valve.

Damaged or worn spool seals Replace spool end seals.

Troubleshooting (Continued)

Problem Cause Correction

Leaky cylinders Oil is bypassing cylinder piston, Replace or rebuild the cylinder; replace

scored piston, worn piston damaged parts.

packing, or defective piston

assembly

Scored piston rods and worn Replace or rebuild the cylinder; replace

guides in cylinder damaged parts.

Bent piston rod in cylinder Replace or rebuild the cylinder; replace

damaged parts.

Worn or damaged rod seals on Repack cylinder. Rebuild cylinder,

cylinder; external leaks replacing damaged parts as necessary.

Leaky valve Loose oil line connections, Tighten all hose connections and

leaks in line or broken lines replace any damaged O-rings at

leaking O-ring fittings. Check and

replace any damaged hoses and lines.

Excessive back pressure Relieve condition. Restriction may be

from outlet to reservoir.

Paint on valve spool; sticking Clean valve spool. Binding is usually

valve spool or scored valve caused from an over tightened plug,

spool mounting bolt, fitting in valve body or

tie rod bolt. If a plug or fitting in the

valve body is leaking, do not overtighten

in an effort to stop leak. This will distort

body casting and cause spools to bind.

Instead, the plug and fitting should be

removed from valve body and be

reconnected, using a new O-ring. Do

not apply excessive pressure on

mounting bolts. The rods should be

torqued to 30 ft. lbs. Never force spool.

Ball in anti-cavitation check Clean anti-cavitation valve carefully,

valve is stuck or not seating being sure that checks move freely and

properly. seat properly, or replace cartridge.

Sticky valve spool Paint on valve spool; sticking Clean valve spool. Binding is usually

valve spool or scored valve caused from an over tightened plug,

spool mounting bolt, fitting in valve body or

tie rod bolt. If a plug or fitting in the

valve body is leaking, do not overtighten

in an effort to stop leak. This will distort

body casting and cause spools to bind.

Instead, the plug and fitting should be

removed from valve body and be

reconnected, using a new O-ring. Do

not apply excessive pressure on

mounting bolts. The rods should be

torqued to 30 ft. lbs. Never force spool.

Bent spool Replace with new spool section.

Foreign particles Clean system and valve.

Misalignment of control handle Check linkage for binding condition.

linkage

Troubleshooting (Continued)

Problem Cause Correction

Unable to push valve Paint on valve spool; sticking Clean valve spool. Binding is usually

spool in valve spool or scored valve caused from an overtightened plug,

spool mounting bolt, fitting in valve body or

tie rod bolt. If a plug or fitting in the valve

body is leaking, do not overtighten in an

effort to stop leak. This will distort body

casting and cause spools to bind. Instead,

the plug and fitting should be removed

from valve body and be reconnected,

using a new O-ring. Do not apply

excessive pressure on mounting bolts.

The rods should be torqued to 30 ft. lbs.

Never force spool.

Oil leakage past spool seal into Remove cap. If it contains oil replace spool

spool cap seal O-rings. Check O-ring retainer to be

sure it is flat. If it has been “belled” check

for restriction from outlet to reservoir of

valve which would cause excessive back

pressure. If supply and return lines are

reversed, pressure on low pressure / return

side of valve will cause problem.

Make sure hoses are connected correctly

at bulkhead connection on backhoe.

Bent spool Replace with new spool section.

Foreign particles Clean system and valve.

Misalignment of control handle Check linkage for binding condition.

linkage

Spring centered spools Paint on valve spool; sticking Clean valve spool. Binding is usually

do not return to neutral valve spool or scored valve caused from an over tightened plug,

spool mounting bolt, fitting in valve body or

tie rod bolt. If a plug or fitting in the

valve body is leaking, do not overtighten

in an effort to stop leak. This will distort

body casting and cause spools to bind.

Instead, the plug and fitting should be

removed from valve body and be

reconnected, using a new O-ring. Do

not apply excessive pressure on

mounting bolts. The rods should be

torqued to 30 ft. lbs. Never force spool.

Oil leakage past spool seal into Remove cap. If it contains oil replace spool

spool cap seal O-rings. Check O-ring retainer to be

sure it is flat. If it has been “belled” check

for restriction from outlet to reservoir of

valve which would cause excessive back

pressure. If supply and return lines are

reversed, pressure on low pressure / return

side of valve will cause problem.

Make sure hoses are connected correctly

at bulkhead connection on backhoe.

Broken return springs Replace springs.

Bent spool Replace with new spool section.

Foreign particles Clean system and valve.

Misalignment of control handle Check linkage for binding condition.

linkage 22

Replace Center Section Assemblies:

Note: For the purpose of these instructions we will consider

the section containing the MAIN RELIEF VALVE as the left

side of the valve.

1. Remove control valve from the backhoe.

2. Thoroughly clean the exterior of the valve before

beginning disassembly procedures.

3. Since the valve will be assembled in the same

order, each section should be marked numerically so

that they can be reassembled in the same sequence.

4. Mount the valve vertically in a vise to facilitate dis-

assembly and assembly.

5. Remove the 3 tie rod nuts from the right end sec-

tion, using a thin-wall socket.

6. Valve sections can now be removed by sliding the

sections along the tie rods.

7. Thoroughly clean the O-ring counterbores and the

ground surfaces of each section. Place O-ring seals,

ordered as a kit, in proper counterbores. For better

sealing, it is recommended that all O-rings used in the

counterbores be replaced with new parts.

8. Replace the sections on tie rods with the O-ring

counterbores facing the right end of the valve. Be

careful replacing the sections so that the section O-

rings are not moved from the counterbores.

9. When all sections are assembled on the tie rods,

tighten the tie rod nuts equally to 30 ft. lbs. torque, NO

MORE - NO LESS, or spools may bind and stick.

Replacing Spool Seals:

Note: For the purpose of these instructions we will consid-

er the control handle side of the valve as the TOP, and the

opposite side as the BOTTOM.

FLOAT ASSEMBLY

Figure 11

SPOOL CONTROL KIT

Position Pin

Bushing

Spring

Bushing

VALVE REPAIR

ASSEMBLY

Basic components for all models can be identified in Figure 12. Refer to Page 43 for photographs of unit on shipping pallet.

General:

The backhoe has been partially disassembled and

strapped to a skid for shipping purposes. Initial installa-

tion on the tractor will require a hoist or other device

capable of safely lifting the entire backhoe from the skid.

After the initial installation is complete, the backhoe can

serve as its own erecting hoist, by lowering stabilizers

and bucket to the ground. Additional lifting devices will

not be required for normal removal and reattaching.

Assembly(2185 & 2195) - Figure 12

IMPORTANT: Tighten all hardware to torque

requirements specified in torque chart on page 45.

1. Remove the stabilizer assemblies and any miscellaneous

items which have been fastened to the skid and arrange

conveniently.

Be sure hoist being used is suit-

able, has sufficient capacity and

is in the proper position. Do not

allow anyone under a backhoe

member supported by hoist.

IGHF

2. Support boom (A) and dipperstick (B) with hoist

attached at (C) and remove boom transport lock pin.

Lower boom and extend dipperstick until end of dip-

perstick is approximately 16” above the ground.

Move control handles to “BOOM DOWN” position and

“CROWD OUT” position as required to aid movement.

1. Remove control valve from the backhoe.

2. Thoroughly clean the exterior of the valve before

beginning disassembly procedures.

3. At the BOTTOM of the valve remove screws, cap

and spool control kit. Keep parts in order of disas-

sembly. See figure 11 for parts involved in the make-

up of the spool control kit.

IMPORTANT: DO NOT remove the spool from the

valve. The seals can be replaced externally.

Prevent spools from rotating or moving by insert-

ing a rod through the hole in the spool and using

the rod as a handle. DO NOT hold the spool with a

wrench. This will destroy the finish.

4. At the BOTTOM of the valve, remove the backup

ring and spool o-ring seal.

5. Thoroughly clean counterbores.

6. Install new seals:

A. Spool Control Kit Only:

All parts inside cap are lubricated with synthetic base

grease NLGI1. Slide o-ring seal over valve spool and

insert seal in counterbore. Replace backup washer

and spool control kit.

B. Float Kit Only:

All parts inside cap are lubricated with synthetic

base grease grade NLGI2. Install new o-ring seal

over valve spool and insert seal in counterbore.

Replace backup washer, control bushing, control

spring, control bushing and positioner pin, being

careful to orient items per Figure 11.

7. At the BOTTOM of the valve replace cap and

screws, reversing the order in which they were dis-

assembled in step 3. Torque screws to 5 ft. lbs.

8. At the top of valve remove all parts connected to

the spool (handles, linkage, etc.)

9. At the TOP of the valve remove screws, flange,

dust cover, backup ring and spool o-ring seal.

10. Thoroughly clean counterbore.

11. Lightly oil new o-ring seal. Slide o-ring seal over

valve spool and insert seal in counterbore. Replace

backup ring, dust cover, flange and screws. Torque

screws to 5 ft. lbs.

12. Reattach all parts connected to the spool (han-

dle, linkage, etc.).

CAUTION

DO NOT cut any strapping that

fastens the backhoe mainframe

and swing frame to the skid

base at this time

CAUTION

Figure 12

3. Remove parts bag containing bucket pins from

backhoe. Attach bucket (D) to dipperstick (B) using

one pin, 3/8” bolt, and locknut.

4. Attach bucket link (E) to bucket, using same hard-

ware as listed for step #3.

5. Reposition hoist on backhoe to prevent tipping and

raise mainframe (G) slightly. Remove all remaining

strapping and attach stabilizers (F) to mainframe (G)

using pins and hardware from parts bag.

6. Attach stabilizer cylinders (H) to stabilizers (F)

using pins and hardware from parts bag.

7. Using caution to prevent tipping, raise mainframe

(G) with hoist to a height of approximately 17” and

remove skid. Block mainframe (G) and swing frame (J)

securely.

8. Follow the Attaching Kit Assembly Instructions to

mount the backhoe to the tractor. Check the installa-

tion carefully and make sure that all members are cor-

rectly installed and securely fastened.

Assembly: (2165 & 2175) - Figure 12

(See “General” note, page 24)

IMPORTANT: Tighten all hardware to torque

requirements specified in torque chart on page 45.

DO NOT cut any strapping that fastens the back-

hoe mainframe and swing frame to the skid at

this time.

1. Remove the stabilizer assemblies and any miscella-

neous items which have been fastened to skid and

arrange conveniently. Be sure hoses to stabilizer cylin-

ders are routed above the cylinder-to-mainframe pivot pin

connection.

2. Support boom (A) and dipperstick (B) with hoist

attached at (C) and remove boom transport lock pin.

Lower boom and extend dipperstick until end of dip-

perstick is approximately 16” above the ground. Move

control handles to “BOOM DOWN” position and

“CROWD OUT” position as required to aid move-

ment.

Be sure hoist being used is suitable, has suffi-

cient capacity, and is in the proper position. Do

not allow anyone under a backhoe member sup-

ported by hoist.

3. Remove parts bag containing bucket pins from

backhoe. Attach bucket (D) to dipperstick (B) using

one pin, 3/8” bolt, and locknut.

4. Attach bucket link (E) to bucket, using same hard-

ware as listed for step #3.

5. Reposition hoist on backhoe to prevent tipping and

raise mainframe (G) slightly. Remove all remaining

strapping and crate base. Using caution to prevent

tipping, raise mainframe (G) to approximately 13” and

block mainframe and swing frame (J) securely.

6. Attach stabilizers (F) to mainframe (G) using pins

and hardware from parts bag.

7. Attach stabilizer cylinders (H) to stabilizers (F)

using pins and hardware from parts bag.

8. Follow the Attaching Kit Assembly Instructions to

mount the backhoe to the tractor. Check the installa-

tion carefully and make sure that all members are cor-

CAUTION

MOUNTING KITS AND OPTIONAL KITS ASSEMBLY

3- POINT HITCH LINKAGE (For 2165 & 2175)

General Description

Mounting and hydraulic kits do not include hoses to

connect the backhoe to the tractor hydraulic system.

Additional hydraulic components, hoses, and/or kits

will be required to complete the hook-up to the tractor

hydraulic system. Refer to the “Hydraulic Hook-up”

section for further information. PTO pump kits are

available as options.

Mounting Backhoe to Tractor or Skid

Steer loaders

The Bush Hog backhoe can be mounted to the power

source using three different attaching kits.

1. To an agricultural tractor’s 3-point hitch linkage

using the 3-point hitch kit. The 3-point hitch kit is the

same regardless of tractor model and the instructions

for attaching the kit to the backhoe are included

below. See Figure 13 for general appearance.

2. To an agricultural tractor using a subframe kit

specifically offered for the tractor model and backhoe

being mounted: The subframe kit instructions differ

with each tractor/backhoe combination and come

included with the individual subframe kit.

3. To a skid steer loader using a skid steer adaptor kit

offered for the skid steer model and backhoe series

being mounted. The skid steer adapter kit instructions

differ with each skid steer model/backhoe combina-

tion and come included with the individual skid steer

adapter kit.

3-Point Hitch Linkage 2165 & 2175

The backhoe is mounted on the tractor lower link

arms and an adjustable upper link is supplied to

replace the tractor upper link. A set of stabilizer arms

is included. They bolt from the adjustable upper link

to the backhoe mainframe, locking the hoe rigidly in

one position.

IMPORTANT: Tractor lower links must be kept

free of lifting forces at all times after installation

of the attaching kit by keeping tractor quadrant

lever in the lowered position.

NOTE: If the 3-Point Kit is to be used with a PTO

Pump Kit, the Reservoir Tank and its fittings should

be installed before proceeding with the 3-Point Kit

installation.

Figure 13 Ag Tractor using 3-point hitch

ASSEMBLY (Refer to Figures 14 & 15)

IMPORTANT: Tighten all hardware to the torque

requirements specified in the torque chart.

To prevent bodily injury, do not operate backhoe

unless Link Weldments (Figure 15 - Items 1 & 2)

are properly installed and adjusted. Failure to do

so may result in backhoe being thrust upward,

crushing operator against cab or ROPS.

1. Use hoist to raise the backhoe mainframe so that

the boom pivot pin is aproximately 13” off the

ground.

2. Back tractor close to the backhoe. Connect tractor

lower link arms to lower link mounts at position “C”,

Figure 14, using two L-pins (3), two cotter pins (4), and

two wire form cotter pins (5) as shown in Figure 15.

NOTE: If tractor has a Category II hitch, install two

bushings (6) in lower link arms as shown in Figure 15.

3. Attach upper braces (7), Figure 15, to backhoe with

3/4 x 7-1/2” bolt (8), flat washers (9), lockwasher (10)

and nut (11). Do not tighten hardware at this time.

4. Install bushing (12) or bushing (13) that most close-

ly matches the diameter of the tractor upper link pin in

the hole of the upper bar (14), as shown in Figure 15.

No bushing is necessary for Category II tractors.

5. Secure upper bar (14) between upper braces (7)

using 3/4 x 4-1/2” bolt (15), flat washers (9), lock-

washer (10) and nut (11). Use hoist to raise or lower

backhoe slightly until a hole in the upper bar aligns

with a hole in the upper braces. See Figure 14.

6. Attach RH lower link weldment (1) and LH lower

link weldment (2) to backhoe mainframe using 7/8” x

2-1/2” bolt (16), flat washers (17), lockwasher (18),

and nut (19). See Figure 15.

7. Align RH and LH link weldment (1, 2) with a hole in

the upper bar/brace assembly, as close to the tractor

as possible. Use 3/4 x 6” bolt (20), flat washers (9),

lockwasher (10), and nut (11). See Figure 15. You may

need to return to Step 6 and reajust the bolt connection

upward or downward .

8. Remove backhoe from the tractor.

9. Install connector bar (21) to RH and LH lower link

weldments (1, 2) using 1/2 x 1-1/2” bolt (22), lockwash-

er (23), and nut (24). See Figure 15.

10. Tighten all hardware at this time. Check your instal-

lation very carefully to be sure all members are correct-

ly installed and securely fastened.

11. If using optional PTO Pump Kit, proceed to that

section prior to mounting the backhoe onto the tractor.

12. Connect hoses from the backhoe control valve to

the tractor hydraulic system as described in “Hydraulic

Hook-Up” section, prior to mounting the backhoe onto

the tractor.

Figure 14

Backhoe

Mainframe

Upper Brace

Link Weldment Tractor Lower Link

Upper Bar

Tractor Upper

Link Weldment

WARNING

Boom Pivot Pin

2185/2195

3-POINT HITCH LINKAGE

3-Point Hitch Linkage

The backhoe is mounted on the tractor lower link

arms and an adjustable upper link is supplied to

replace the tractor upper link. A set of stabilizer arms

are included. They bolt from the adjustable upper

link to the backhoe mainframe, locking the hoe rigid-

ly in one position.

IMPORTANT- Tractor lower links must be kept

free of lifting forces at all times after installation

of the attaching kit by keeping tractor quadrant

lever in the lowered position.

NOTE: If the 3-Point Kit is to be used with a PTO

Pump Kit, the Reservoir Tank and it’s fittings should

be installed before proceeding with the 3-Point Kit

installation.

Figure 15

(2165 &2175)

24 23

11 10 9

714

ASSEMBLY

IMPORTANT: Tighten all hardware to the torque

requirements specified in the torque chart on page 45.

To prevent bodily injury, do not operate backhoe

unless Link Weldments ( Figure 16 - Items 1 & 2)

are properly installed and adjusted. Failure to do

so may result in backhoe being thrust upward,

crushing operator against cab or ROPS.

1. Use hoist to raise the backhoe mainframe so that

the boom pivot pin is approximately 17” off the

ground.

2. Back tractor close to the backhoe. Connect tractor

lower link arms to lower link mounts at position “C”,

Figure 17, using two L-pins (3), two cotter pins (4), and

two wire form cotter pins (5) as shown in Figure 16.

NOTE: If tractor has a Category II hitch, install two

bushings (6) in lower link arms as shown in Figure 16.

3. Attach upper braces (7), Figure 16, to backhoe with

3/4 x 7-1/2” bolt (8), flat washers (9), lockwasher (10)

and nut (11). Do not tighten hardware at this time.

4. Install bushing (12) or bushing (13) that most

closely matches the diameter of the tractor upper link

pin in the hole of the upper bar (14), as shown in

Figure 16. No bushing is necessary for Category II

tractors.

5. Secure upper bar (14) between upper braces (7)

using 3/4 x 4-1/2” bolt (15), flat washers (9), lock-

washer (10) and nut (11). Use hoist to raise or lower

backhoe slightly until a hole in the upper bar aligns

with a hole in the upper braces. See Figure 16.

6. Attach RH lower link weldment (1) and LH lower

link weldment (2) to backhoe mainframe using 7/8” x

2-1/2” bolt (16), flat washers (17), lockwasher (18),

and nut (19). See Figure 16.

7. Align RH and LH link weldment (1, 2) with a hole in

the upper bar/brace assembly, as close to the tractor

as possible. Use 3/4 x 6” bolt (20), flat washers (9),

lockwasher (10), and nut (11). See Figure 16. You may

need to return to Step 6 and readjust the bolt connec-

tion upward or downward .

8. Remove backhoe from the tractor.

9. Install connector bar (21) to RH and LH lower link

weldments (1, 2) using 1/2 x 1-1/2” bolt (22), lockwash-

er (23), and nut (24). See Figure 16.

10. Tighten all hardware at this time. Check your instal-

lation very carefully to be sure all members are correct-

ly installed and securely fastened.

11. If using optional PTO Pump Kit, proceed to that

section prior to mounting the backhoe onto the tractor.

12. Connect hoses from the backhoe control valve to

the tractor hydraulic system as described in “Hydraulic

Hook-Up” section, prior to mounting the backhoe onto

the tractor.

WARNING

Figure 16

(2185 & 2195)

616

109

1110 9

7 14

920

157

19 18

General Description

The PTO Pump Kits consist of those parts required

to power the backhoe from the tractor’s PTO shaft.

They include the PTO pump (6 or 8 gpm) and

adapter, reservoir, filtration system, hydraulic hoses,

and fittings. In addition, they include a torque plate

that straddles the tractor’s draw bar and keeps the

pump from turning with the PTO shaft.

NOTE - The speed of backhoe operations increases

as PTO speed increases.

ASSEMBLY

IMPORTANT - When installing fittings, always

use a paste-type thread sealant on perrmanent

connections such as NPT (pipe) threads. DO

NOT use Teflon tape as thread sealant. DO NOT

use thread sealant on union ends of adapters.

DO NOT over-tighten fittings - they can split or

expand causing hydraulic fluid leakage.

Please refer to Figure 18 as a guide for assembly of

the PTO Pump Kits.

1. Assemble reservoir (16) to backhoe using 3/8” x

1” bolts (2), flat washers (5), lock washers (7), and

hex nuts (10).

2. Assemble 1” street elbow (34) to fill port on top of

reservoir, orienting elbow so that it faces right rear of

backhoe. Connect fill tube (17) to street elbow.

Figure 17

Backhoe Mainframe

Upper Brace

Upper Bar Tractor Upper

Link Bracket

Link Weldment

Tractor Lower Link

Elbow may have to be rotated slightly to allow fill

tube to be installed so that its open end is located

just behind foot platform to right of operator’s seat

tower. Install breather cap with dipstick (18) onto fill

tube.

3. If filter element (35) is not already attached to filter

base, apply a thin layer of hydraulic fluid to the rub-

ber seal on the filter element and then screw it onto

the filter base. Hand tighten the element until it just

seats on the filter base, then tighten an additional

3/4 of a turn. Use this same procedure when replac-

ing filter element.

NOTE - Change filter element every time oil is

changed.

4. Assemble 90°adapter fitting (27) to inlet port of fil-

ter base and orient so that free end of fitting will

point towards backhoe and angled slightly down-

ward from horizontal. Assemble small 90°beaded

tube fitting (26) to outlet port of filter base and orient

so that free end of fitting will point towards backhoe

and angled about 30°upward from horizontal.

Connect filter assembly (15) to left rear corner of

backhoe foot platform using 1/4” x 3/4” bolts (1), flat

washers (4), and lock washers (6) - flow direction

arrow on filter base should point toward rear of back-

hoe. DO NOT over-tighten bolts as this will strip the

threads on filter base.

5. Assemble on 90°JIC adapter fitting (28) to

“Out/Return” port of bulkhead connection and an

PTO PUMP KITS (Optional)

identical fitting to “In/Pressure” port of bulkhead con-

nection. Orient fittings so that free ends of fittings

point horizontally toward center of backhoe.

6. Take one end of 28” hydraulic hose (23) and route

under foot platform, through hole at top of left hand

backhoe side plate, and connect to 90° adapter fit-

ting (27) at inlet of filter base. Connect free end of

hose to 90° JIC adapter fitting (28) on “Out/Return”

port of bulkhead connection.

7. Assemble small 90° beaded tube fitting (26) to inlet

port at left rear of hydraulic reservoir and connect 24”

return hose (21) from this fitting to 90° beaded tube

fitting (26) on filter base. Secure hose to fittings at

either end using two small hose clamps (32).

8. Assemble torque plate (33) to PTO pump (12)

using 1/2” x 1-1/2” bolts (3), lock washers (8), and

hex nuts (11). Torque plate may need to be re-orient-

ed later to accommodate different tracator configura-

tions.

9. Align key slot in PTO adapter (13) with Woodruff

key on PTO pump shaft and slide PTO adapter onto

pump shaft allowing 1/8” clearance between adapa-

ter and pump face. Secure PTO adapter to pump

shaft with two 5/16” x 3/4” set screws (14). Place

5/16” hex nuts (9) on set screws and tighten nuts to

prevent set screws from loosening.

10. Assemble large 90° beaded tube fitting (24) to

outlet port at right rear of hydraulic reservoir and ori-

ent free end of fitting horizontally pointing toward left

side of backhoe.

11. Assemble large 0-ring boss adapater (30) to “IN”

port on PTO pump, tightening fitting until it completely

bottoms-out on pump. Connect 90° beaded tube fit-

ting (25) to 0-ring adapter. Beaded tube fitting may

need to be reoriented later for proper hose routing.

12. Connect 30” suction hose (19) between 90°

beaded tube fittings (24, 25) on hydraulic reservoir

and PTO pump and secure hose to fittings at either

end with large hose clamps (20).

13. Assemble small 0-ring boss adapter (31) to

“OUT” port on PTO pump tightening fitting until it

completely bottoms-out on pump. Connect 90° JIC

adapter (29) to 0-ring adapter. JIC adapter may need

to be reoriented later for proper hose routing.

14. Connect 36” hydraulic hose (22) between 90° JIC

adapters (29, 28) on PTO pump and “In/Pressure”

port on bulkhead connection.

IMPORTANT - If hoses are hooked-up incorrectly,

serious damage to the backhoe will result.

15. NOTE: Initial filling of backhoe reservoir

requires 7 gallons of fluid. Fill reservoir with recom-

mended fluid to correct level, referring to Service

Section in Backhoe Operator’s Manual. DO NOT

overfill reservoir or oil may be forced out through

breather cap during backhoe operation.

16. Mount backhoe to tractor at this time following

procedure in Attaching Kit Manual.

17. Slide complete PTO pump assembly onto tractor

PTO shaft until PTO adapter (13) locks into groove

on PTO shaft. Make sure kinks do not develop in any

hydraulic lines. Suction hose (19) can be shortened

to help prevent kinks. Adjust orientation of 90°

adapter fittings (25, 29) on PTO pump (12) as

required to remove kinks or sharp bends in hoses.

DO NOT REMOVE TRACTOR PTO GUARD

18. Torque plate (33) may be adjusted (flipped front-

to-back or bottom-to-top) on pump for proper fit-up to

tractor drawbar or 3-Point Hitch Kit, if necessary.

Optimum position is to mount plate pointing down

and over drawbar with offset in torque plate facing

towards tractor. (Refer to Figure 18)

An alternate position for torque plate is to mount it

pointing upward straddling upper bar of 3-Point Hitch

Kit. Regardless of which mounting position is used

with torque plate, PTO pump must be restrained from

rotating.

IMPORTANT- When mounting backhoe with 3-

Point Hitch Kit, do not let hydraulic lines become

entangled in any part of Hitch Kit during installa-

tion. Ensure that both pressure and suction

hoses are free from kinks or twists to reduce

back pressure and to prevent excessive heat

build-up.

19. Start tractor engine and engage tractor PTO.

Cycle backhoe through all of its functions several

times to remove air from cylinders and hydraulic lines

until all functions operate smoothly. After cycling all

backhoe functions, check oil level with backhoe

extended to full reach and bucket rolled-back and

resting on ground. If oil level on dipstick is below

“ADD” line, add oil to bring oil level up to “FULL” line.

DO NOT overfill reservoir or oil may be forced out

through breather cap during backhoe operation.

HYDRAULIC HOOK-UP TO TRACTOR

If the optional PTO Pump Kit is to be used, refer to

the instructions for that kit for proper assembly.

There are four basic methods of hooking up the

backhoe to the hydraulic system of a tractor. The cor-

rect method for the particular tractor will depend on

the remote couplers available, whether a loader

CAUTION

Figure 18

valve or other accessory valve is connected to the

tractor system, and whether the tractor has an open-

center system (constant pumping of oil to control

valve and back to reservoir) or a closed-center sys-

tem (no flow of oil until there is a demand at one

hydraulic cylinder). The four hook-up methods are

described below.

IMPORTANT: Follow instructions carefully when

connecting backhoe to tractor hydraulic system.

The decal shown at right is located on the front left

hand side of the control console.

NOTE: Do not connect hoses from the backhoe

control valve to the tractor hydraulic system until ini-

tial assembly of mounting kit is complete.

1. OPEN-CENTER SYSTEM WITH LOADER VALVE

OR OTHER ACCESSORY VALVE CONNECTED TO

THE TRACTOR HYDRAULIC SYSTEM

1, 6, 4

23 18

31 811

914

When a loader valve or other accessory valve must

be connected to the tractor hydraulic system in addi-

tion to the backhoe control valve, a Power Beyond

Kit is required. This kit converts the backhoe valve so

that pressurized hydraulic oil can be directed to

another open-center valve for a loader or other

accessory. This allows the backhoe valve and the

other valve to be connected to the tractor hydraulic

system simultaneously, without the inconvenience of

using a flow diverting valve.

Torque Plate Shown In “Up”

Position Around 3-Point Hitch Link

Torque Plate In

“Down” Position

Since the Power Beyond Kit is used with open-cen-

ter tractor hydraulic systems, oil constantly flows

from the pump, through the backhoe valve and the

loader valve or other accessory valve, and then to

the reservoir. See further in this manual for instruc-

tions on proper assembly.

2. CLOSED CENTER SYSTEM: (2165)

Because a closed-center system requires no flow of

oil through the backhoe control valve when the

levers are in a neutral position, the 2165 backhoe

must not be connected to a closed-center tractor

hydraulic system. A PTO pump kit is required if

the backhoe is to be mounted to a tractor with a

closed-center hydraulic system.

IMPORTANT: Do not connect a 2165 backhoe

control valve to a closed-center tractor hydraulic

system, or serious damage to backhoe valve or

tractor hydraulic system may result.

3. OPEN-CENTER SYSTEM WITH RETURN OIL

NOT REQUIRED FOR LUBRICATION - Figure 19

The pressure hose (A) should be connected from the

pressure port at the backhoe bulkhead connection to

the pressure port of the tractor remote couplers or

directly to the tractor valve. The return hose (B)

should be connected from the tank (return) port at

the backhoe bulkhead connection directly to a port

on the reservoir, as shown in Figure 19.

IMPORTANT: Never connect the return hose to a

tractor remote coupler which can be pressurized.

Accidental pressurization can cause serious

damage to backhoe valve.

4. OPEN-CENTER SYSTEM WITH RETURN OIL

REQUIRED FOR LUBRICATION - Figure 20

On some tractors, the return oil cannot be routed

directly to the reservoir because it is required for the

lubrication of other functions. Check this characteris-

tic with your dealer. The pressure hose (A) must be

connected from the pressure port at the backhoe

bulkhead connection to the pressure port of the trac-

tor’s remote couplers or directly to the tractor valve.

The return hose (B) must be connected from the

tank (return) port at the backhoe bulkhead connec-

tion to a surge relief valve as shown in Figure 20.

NOTE: The surge relief valve is not supplied with the

backhoe or mounting kit and must be ordered sepa-

rately to complete this type hydraulic hook-up.

Complete the hydraulic hook-up by connecting the

surge relief valve to the return port of tractor remote

couplers or directly to the tractor valve, and by con-

necting a hose from TANK port of the surge relief

valve to the tractor reservoir as shown in Figure 20.

The surge relief valve is used to protect the backhoe

valve from damage caused by accidental pressuriza-

tion or high back pressure build-up. If this happens,

oil will be vented from the TANK port of the surge

relief valve to the tractor reservoir to prevent loss of

vented oil.

Figure 19 Backhoe Valve

Tank

Pressure

Backhoe Bulkhead

Connectors

Hoses Supplied

By Customer

To Tractor Reservoir

Tractor

Coupler Tip

Figure 20

Backhoe Valve

Tank

Pressure

Backhoe Bulkhead

Connectors

Hoses Supplied

By Customer

To Tractor Reservoir

Tractor

Coupler Tips

To Return Port

Of Oil Supply

To Pressure Port

Of Oil Supply

To Pressure Port

Of Oil Supply

Hydraulic Hook-Up (2175, 2185, 2195)

For Tractors With Closed-Center Hydraulic Systems

(Figure 21)

There are two basic types of hydraulic systems, open-

center and closed-center. The open-center system con-

stantly pumps oil through the hydraulic cylinder operat-

ing valves and returns the oil to the reservoir. The

closed-center system does not pump oil until there is a

demand for oil from one of the hydraulic cylinders.

In this case, CLOSED-CENTER means that when the

operating valves which control the hydraulic cylinders

are in the neutral position, there is no flow of oil through

the valves. As long as the engine and pump are run-

ning, a constant stand-by oil pressure of approximately

2000 PSI or more is maintained in the system. Pressure

oil is available instantaneously to go to work when any

one of the operating valves is opened.

Because there must be no flow through the backhoe

control valve when the levers are in neutral position, the

backhoe must be converted for closed-center operation.

Hook-Up Requirements

The hook-up of the BH750, BH850, & BH950 Backhoes

to the closed-center system requires more than con-

necting it to the remote couplers. The required devices

are:

1. A flow restrictor in the pressure line to keep the speed

of the backhoe operation within safe and acceptable limits.

2. A main relief valve in the backhoe control valve with a

pressure setting that is always higher than the tractor

system pressure.

3. A closed-center plug in the backhoe control valve to

make it a non-circulating or a demand type system.

4. A low pressure surge relief valve in the return line

to keep the tractor back pressure surges from dam-

aging the backhoe control valve seals or tractor sys-

tem. A surplus flow line from the relief valve carries only

the excess surge oil directly back to the tractor hydraulic

reservoir so that it bypasses all other tractor functions.

Backhoe Operation

For the most part, a backhoe will function about the

same whether it is powered by an open-center or

closed-center hydraulic system. However, there are

some differences which the operator should be aware of

when utilizing a closed-center hydraulic system.

As a backhoe function (lifting, actuating the bucket to fill

it, etc.) becomes increasingly difficult and the hydraulic

system pressure is rising closer to its maximum setting,

there will be a noticeable slow down before stoppage

occurs. As the system pressure is approaching maxi-

mum, the pump is also beginning to stroke back for less

and less fluid delivery. At maximum pressure, the pump

is completely destroked and there is no delivery.

Therefore, when working various backhoe functions at

or near maximum ability, a closed center system will

give the operator the impression that the backhoe is

sluggish and somewhat unresponsive. Learning to ease

up slightly at the first indication of slow down will permit

the backhoe to perform at continuing maximum speed

and efficiency.

Hook-Up Diagram

For John Deere Tractors use reservoir plug. Remove

plug, drill with 37/64 drill, and tap 3/8 NPT pipe. Screw

adapter into plug, locking with Locktite to assure

assembly will remain together during connecting

and disconnecting procedures. Obtain another plug

from your dealer to use when backhoe is removed.

For other tractor makes, use filler plug, drain plug,

or any other port that goes directly into the hydraulic

reservoir. Do not rely only on the remote coupler

return.

Typical plug for surplus relief flow line. Check care-

fully that it enters the reservoir before using. Note

that the location varies with different tractor makes

and models. A John Deere Tractor is shown.

JOHN DEERE - DIAL APPROXIMATELY

AS SHOWN

Figure 22

Figure 21

Remove port “C” plug and install

closed center plug inside port.

Re-install Port “C” plug

Backhoe Valve

Tank

Pressure

To Tractor

Reservoir

Backhoe Bulkhead

Connectors

Hoses Supplied

By Customer

Tractor

Coupler Tips

Surge Relief Valve

Main Relief

Valve

POWER BEYOND KITS

FOR TRACTORS WITH OPEN-CENTER HYDRAULIC SYSTEMS

General Description

A power beyond application is required to convert a

hydraulic valve so that pressurized oil can be directed

to another “open center” valve. This allows the back-

hoe valve and a loader valve, or other accessory, to

be connected to the tractor hydraulic system simulta-

neously, without the inconvenience of using a flow

diverting valve.

Since the power beyond application is only required

on “open center” hydraulic systems, oil will be con-

stantly flowing from the pump through the backhoe

and loader or other accessory valve, and then back to

the reservoir. “Open center” refers to this constant

flow through the open center of the valves.

The assembly instructions cover two conditions that

require a power beyond kit to be ordered from Great

Bend. The first procedure shows the recommended

method of connecting a Great Bend loader with a

Great Bend valve to a Great Bend backhoe. The sec-

ond procedure shows the recommended method for

connecting a Great Bend backhoe and a competitive

loader or a non Great Bend valve. The second is also

used to operate the backhoe and loader off the back-

hoe PTO pump kit option. In the first procedure, the

power beyond plug is included with the loader valve

when the valve is ordered. The second procedure

requires the power beyond kit for the backhoe valve

be ordered from Great Bend as a separate item.

The hoses and fittings required in either procedure to

connect the two valves together are not supplied. The

proper fittings and hose lengths required must be

determined for each specific application. The parts

must be supplied by the customer.

Tractor Preparation

Stop tractor, lower all attachments to the ground, and

relieve pressure in all hydraulic lines by moving all

control handles back and forth or side to side several

times.

Note: The terms RIGHT and LEFT for all adapter

parts are determined from the position of the operator

when seated in the operating position on the backhoe.

FIRST PROCEDURE

ASSEMBLY OF A BUSH HOG BACKHOE

TO A GREAT BEND LOADER VALVE

IMPORTANT: Improper hydraulic hook-up can

cause serious damage to backhoe control valve or

other hydraulic components. Refer to the Great

Bend loader Operator’s Manual during this proce-

dure.

When connecting the Great Bend backhoe valve to a

Great Bend front end loader valve, the input pressure

line from the tractor will be connected to the loader

valve first. The power beyond pressure line will be

connected to the input pressure port of the backhoe

valve. In order to properly plumb the system, the

loader valve will require converting to a power beyond

valve. Refer to the Operator’s Manual received with

the loader for the proper assembly of the power

beyond valve.

There have been several different valves used on the

Great Bend loader in past years. The fittings required

to convert the Great Bend loader valve to a power

beyond application are included in the loader valve

kit. If the fittings (or plugs) cannot be located, they can

be obtained from Great Bend Service Parts. Before

attempting to order the plug you must first determine

the manufacturer of the loader valve assembled to

your loader. This can be determined from the identifi-

cation plate located on the valve.

1. Install the power beyond plug received with the

loader valve into valve cavity as shown in Figure 23

(Page 36). Make sure O-rings on sleeve are posi-

tioned properly and are not pinched or damaged.

2. Install a pressure line (supplied by customer)

between the tractor pressure “out” port and the pres-

sure inlet port of the loader valve.

3. Install a pressure line (supplied by customer) between

the power beyond fitting of the loader valve and the pres-

sure inlet port on the backhoe bulkhead connection as

shown in Figure 23.

4. Complete assembly of “return” hoses as shown in

Figure 23. Connect tee fitting to return outlet port on the

backhoe bulkhead connector as shown. Connect return

hose from rerturn outlet port of the loader valve to the

branch port of the tee fitting. Hoses and tee supplied by

customer. Connect a second return hose from the tee fit-

ting directly to a port on the tractor reservoir as shown in

Figure 23.

GREAT BEND BACKHOE & GREAT BEND LOADER VALVE

Figure 23

NOTE: Large loader valve (Walvoil)

shown. Small loader valve porting is

different. Refer to loader operator’s

manual for different valves.

Backhoe Bulkhead Connection

(Located on inside of mainframe

side plate at left rear of hoe)

Inlet

Great Bend Loader Valve

Outlet

Open Center

Plug

Power Beyond Plug

(Supplied With Valve)

From Tractor

Pressure

Outlet Port

IMPORTANT: Never connect the return hose to a tractor remote

coupler which can be pressurized. Accidental pressurization can

cause serious damage to backhoe valve.

Backhoe Valve

Return Line

Pressure To

Backhoe Valve

To Tractor

Reservoir Port

SECOND PROCEDURE

ASSEMBLY OF A GREAT BEND BACKHOE

TO A NON GREAT BEND LOADER VALVE -

OR - GREAT BEND BACKHOE TO LOADER

VALVE USING PTO PUMP KIT OPTION

Assembly of a Great Bend backhoe to a non-Great

Bend loader valve, OR a Great Bend Backhoe to a

loader valve using the PTO Pump Kit option.

IMPORTANT:

Improper hydraulic hook-up can cause seri-

ous damage to the backhoe control valve,

loader valve, tractor valve, and other

hydraulic components.

The pressure supply line from the PTO pump

must be connected to the pressure inlet port

on the backhoe bulkhead connection whether

using a Great Bend loader valve or a non-

Great Bend loader valve. Never connect the

pressure supply line from the PTO pump to

the loader valve pressure inlet port because

excessive pressure will build up resulting in

damage to the PTO pump.

The following instructions are to be used to connect

the backhoe valve in line with a loader valve that is

not a Great Bend loader valve. When connecting the

Great Bend backhoe valve to a loader valve other

than one obtained from Great Bend, the input pres-

sure line from the tractor will be connected to the

pressure port on the backhoe bulkhead connection

first. In order to properly plumb the system, the back-

hoe valve will require converting to a power beyond

valve. The power beyond pressure line from the

backhoe valve will be connected to the input pres-

●

sure port of the loader valve. The power beyond kit

for the backhoe being assembled must be ordered as

a separate item from Great Bend.

Assembly

1. Remove the front cover that encloses the back-

hoe valve within the control console.

2. Carefully clean the top and front sides of the

backhoe valve and remove the large “Port C”

plug located on the front of the right hand end

section of the valve.

3. Install power beyond / closed center plug inside

of port. Make sure power beyond / closed center

plug is tightly engaged.

4. Install 90° male adapter into “C” port with open

end of adapter (JIC side) oriented so that it points

down and towards the right side of the backhoe.

5. Connect hydraulic hose (supplied by customer) to

90° male adapter. The hydraulic hose should

have the same pressure rating as the original

pressure hose to the loader or other accessory

valve.

6. Connect the other end of the hydraulic hose to the

pressure port of the loader or accessory valve

using fittings (supplied by customer) as required.

Refer to Figure 24.

7. Complete assembly of the backhoe “pressure”

and “return” hydraulic hoses and a tee fitting (all sup-

plied by customer) as shown.

8. Complete assembly of the loader or accessory

valve “return” hydraulic hose (supplied by cus-

tomer) to the tee fitting as shown.

Figure 24

Remove port “C” plug and

install closed center plug

inside port.

Backhoe Valve

Return From

Backhoe Valve

Backhoe Bulkhead

Connector

To Tractor Reservoir

Port or Backhoe

Return Filter Inlet

Pressure To

Backhoe Valve

From Tractor Pressure

“Out” Port Or Outlet Port

Of PTO Pump

Loader Or

Accessory Valve

Outlet

Inlet

Return From

Loader Valve

Pressure To

Loader Valve

Pressure

FLOW DIVIDER KIT (Optional)

General Description

The Flow Divider Kit consists of those parts required

to power the backhoe from tractors or skid steer

loaders that have hydraulic flow rates above 12 gal-

lons per minute (gpm). It includes the flow divider

valve, hydraulic hoses to connect the valve to the

backhoe, and adapter fittings. This kit does not

include the hoses required to connect the flow

divider valve to the tractor or skid steer loader.

These hoses may be obtained from your local deal-

ership and must have 7/8” - 14 JIC (37°flare) female

threads to connect to the flow divider valve.

NOTE - Tighten all hardware to the torque require-

ments specified in the torque chart.

Assembly

IMPORTANT - If hoses are hooked-up incorrectly,

serious damage to the backhoe valve will result.

DO NOT use thread sealant on union ends of

adapters. DO NOT over-tighten fittings - they can

split or expand causing hydraulic fluid leakage.

Backhoe Mounted to Tractor

1. Assemble three 90°male adapters (10) to flow

divider valve as shown in Figure 25.

2. Assemble flow divider valve (5) to backhoe -

mount valve to inside face of right hand side plate

using 5/16” x 2-1/2” bolts (1) and lock nuts (3).

Orient valve so that wording on valve can be read

after valve is mounted to backhoe.

3. Assemble JIC swivel run tee (9) to proper port on

flow divider valve according to instructions that

follow.

Tractors with an auxiliary hydraulic flow of 15

gpm or less

Connect JIC swivel run tee (9) to 90°male adapter

(10) on “K3” port on valve as shown in Figure 26.

Figure 25

FLOW DIVIDER

VALVE TO

BACKHOE MOUNTING

Figure 26

FOR TRACTOR HYDRAULIC

FLOW OF 15 GPM OR LESS

Pressure Line

From Tractor

Return Line

To Tractor

To Backhoe Bulkhead

“Return” Connection

To Backhoe Bulkhead

“Pressure” Connection

910

Tractors with an auxiliary hydraulic flow greater

than 15 gpm

Connect JIC swivel run tee (9) to 90° male adapter (10)

on “K2” port on valve as shown in Figure 27.

IMPORTANT - The location of the JIC swivel run tee

will ensure that proper flow is provided to the back-

hoe for smooth operation. The flow into the valve

from the tractor is divided between the two outlet

ports “K2” and “K3”. The hydraulic flow is split so

that 60% is flowing from the “K2” port and 40% is

flowing from the “K3” port.

4. Assemble 90°JIC adapter (8) to branch port of

swivel run tee fitting (9).

5. Assemble 45°JIC adapters (7) to both

“In/Pressure” and “Out/Return” ports on the back-

hoe bulkhead connection.

6. Connect 24” hydraulic hose (11) between 45°JIC

adapter (7) on backhoe “In/Pressure” bulkhead

connection and single 90°male adapter (10) locat-

ed under flow divider valve.

7. Connect 24” hydraulic hose (11) between 45°JIC

adapter (7) on backhoe “Out/Return” bulkhead con-

nection and JIC swivel run tee (9) on flow divider

valve.

8. Assemble quick coupler (supplied by customer) to

pressure line hydraulic hose (supplied by customer)

and connect free end of hose to 90°male adapter

(10) at top of flow divider valve.

9. Assemble quick coupler (supplied by customer) to

return line hydraulic hose (supplied by customer)

and connect free end of hose to 90°JIC adapter (8)

on flow divider valve.

10. Carefully route pressure and return line hydraulic

hoses to tractor remote hydraulic connections.

Remove dust caps from tractor remote hydraulic

connections and connect hoses to the appropri-

ate port on tractor.

Testing Backhoe Hydraulic Hook-Up

1. Start tractor engine.

2. Set parking brake and engage tractor remote

hydraulics so that oil flows to backhoe. NOTE!

Consult tractor Operator’s Manual for proper

operation.

3. Exit tractor and sit in backhoe operator’s seat.

4. To remove air from backhoe hydraulic system,

slowly cycle all backhoe functions (stabilizers,

boom, dipperstick, bucket, and swing) several

times. Be sure to cycle stabilizers first and then

lower both stabilizer arms into operating position

before cycling other backhoe functions.

5. Exit backhoe, disengage tractor remote

hydraulics, stop engine, and check tractor

hydraulic fluid level.

Backhoe Mounted to Skid Steer Loader

1. Assemble 90°male adapter (10) to inlet port at

bottom of flow divider valve as shown in Figure 28.

2. Assemble flow divider valve (5) to Great Bend

skid steer adapter using 5/16” x 2-1/2” bolts (1) and

lock nuts (3), 5/8” x 1” bolts (2), 5/8” lockwashers (4)

and valve mount plate (12). Orient valve so that

wording on valve can be read after valve is mounted

to skid steer adapter.

3. Assemble remainder of fittings to flow divider

valve according to instructions that follow.

To Backhoe Bulkhead

“Pressure” Connection

To Backhoe Bulkhead

“Return” Connection

Pressure Line

From Tractor

Figure 27

Return Line

To Tractor

FOR TRACTOR HYDRAULIC

FLOW GREATER THAN 15 GPM

Skid Steers with an auxiliary hydraulic flow of 15

gpm or less - Figure 29

Assemble straight male adapter (6) to “K3” port on

valve as shown in Figure 29. Assemble JIC swivel

run tee (9) to straight male adapter (6). Assemble

90° male adapter (10) to “K2” port on valve.

Skid Steers with an auxiliary hydraulic flow

greater than 15 gpm - Figure 30

Assemble straight male adapter (6) to “K2” port on

valve as shown in Figure 30. Assemble JIC swivel

run tee (9) to straight adapter (6). Assemble 90°

male adapter (10) to “K3” port on valve.

IMPORTANT - The location of the JIC swivel run

tee will ensure that proper flow is provided to the

backhoe for smooth operation. The flow into the

valve from the skid steer is divided between the

two outlet ports “K2” and “K3”. The hydraulic

flow is split so that 60% is flowing from the “K2”

port and 40% is flowing from the “K3” port.

4. Assemble 90°JIC adapter (8) to through port of

swivel run tee fitting (9).

5. Assemble 45°JIC adapters (7) to both

“In/Pressure” and “Out/Return” ports on the backhoe

bulkhead connection.

6. Connect 24” hydraulic hose (11) between 45°JIC

adapter (7) on backhoe “In/Pressure” bulkhead con-

nection and single 90°male adapter (10) located on

top of flow divider valve.

7. Connect 24” hydraulic hose (11) between 45°JIC

adapter (7) on backhoe “Out/Return” bulkhead con-

nection and JIC swivel run tee (9) on flow divider

valve.

8. Assemble quick coupler (supplied by customer) to

pressure line hydraulic hose (supplied by customer)

and connect free end of hose to 90°male adapter

(10) at bottom of flow divider valve.

9. Assemble quick coupler (supplied by customer) to

return line hydraulic hose (supplied by customer)

and connect free end of hose to 90°JIC adapter (8)

on flow divider valve.

10. Carefully route pressure and return line hydraulic

hoses to tractor hydraulic connections. Remove dust

caps from tractor hydraulic connections and connect

hoses to the appropriate port on tractor.

Testing Backhoe Hydraulic Hook-Up

1. Start skid steer loader engine.

2. Set parking brake and engage auxiliary boom

hydraulics so that oil flows to backhoe. NOTE!

Consult skid steer Operator’s Manual for proper

operation.

3. Exit skid steer and sit in backhoe operator’s seat.

4. To remove air from backhoe hydraulic system,

slowly cycle all backhoe functions (stabilizers, boom,

dipperstick, bucket, and swing) several times. Be

sure to cycle stabilizers first and then lower both sta-

bilizer arms into operating position before cycling

other backhoe functions.

5. Exit backhoe, disengage auxiliary boom

hydraulics, stop engine, and check skid steer

hydraulic fluid level.

Figure 28

FLOW DIVIDER VALVE TO SKID

STEER ADAPTER MOUNTING 6

Figure 29

FOR SKID STEER HYDRAULIC

FLOW OF 15 GPM OR LESS

Figure 30

FOR SKID STEER HYDRAULIC

FLOW GREATER THAN 15 GPM

To Backhoe Bulkhead

“Return” Connection

To Backhoe Bulkhead

“Return” Connection

To Backhoe Bulkhead

“Pressure” Connection

To Backhoe Bulkhead

“Pressure” Connection

Return Line

To Skid Steer

Return Line

To Skid Steer

Pressure Line

From Skid Steer

Pressure Line

From Skid Steer

BACKHOES - DIMENSIONS AND SPECIFICATIONS

Specifications May Vary Depending on Tractor Model and are Subject to Change Without Notification. Tractors Must Be Equipped

with ROPS and Seat belt That Will Provide Better Safety.

SERIES 2165 2175 2185 2195

Maximum Digging Depth 7’0” 8’0” 9’0” 10’0”

A. Digging Depth (two foot flat bottom) 6’6”7’6”8’6”9’6”

B. Swing Arc 180°180°180°180°

C. Loading Height (bucket at 60°) 4’4”5’4”6’8”7’6”

D. Reach from Center Line of Swing Pivot 9’4”10’11’1”12’4”

E. Transport Height (maximum) 5’6”6’7”6’11”8’0”

F. Bucket Rotation 180°180°180°180°

G. Loading Reach (bucket at 60°)4’6”3’9”4’1”4’7”

H. Transport Overhang 3’8”3’9”4’5”4’9”

I. Undercut 2’6”2’9”3’3’0”

J. Stabilizer Spread, down position 7’2”7’2”8’9”8’9”

K. Stabilizer Spread, up position 3’7”3’7”4’7”4’7”

Bucket Cylinder Digging Force 2970 lbs. 3380 lbs. 4023 lbs. 4668 lbs.

Dipperstick Cylinder Digging Force` 1480 lbs. 2240 lbs. 2445 lbs. 3261 lbs.

Hydraulic Volume Requirements 6 GPM 6 to 8 GPM 6 to 8 GPM 6 to 8 GPM

Hydraulic Pressure Requirements 2400 psi. 2400 psi. 2400 psi. 2400 psi.

Recommended Tractor HP Requirements 18 - 35 HP 25 - 50 HP 35 - 100 HP 55 - 100HP

REPOSITION STABILIZER CYLINDERS BEFORE

REMOVING BACKHOE FROM SHIPPING PALLET

Cylinder ports must be pointing upward and hoses routed above the cylinder to main-

frame pivot pin connection.

Palletized backhoe as shipped from fac-

tory. Remove stabilizers and fasteners

from pallet. Position stabilizer between

mounting lugs and pin into place. Cut

plastic ties from rod ends of hydraulic

cylinders, swing down and pull rod end

out to align with stabilizer mounting lugs.

Pin into place with provided fasteners.

Stabilizers and

Fasteners

Hydraulic Cylinder

Stabilizer

Hydraulic Cylinder Rod

SAFETY DECALS

The safety of the operator was a prime consideration in the design of the backhoe. Proper shielding, conve-

nient controls, simple adjustments and other safety features have been built into this implement. The following

decals are located on the backhoe. Keep decals clean and replace them immediately if they are missing.

Contact your dealer or Great Bend for replacements.

50102293 50100238

50102292

50033364

50102294 50033476 50102523 50033477

TORQUE SPECIFICATIONS

Proper toque for American fasteners used on Great Bend equipment.

Recommended Torque in Foot Pounds (Newton Meters).*

BOLT DIAMETER

WRENCH (IN.) “B” AND SAE SAE SAE

SIZE (IN.) “A” THREAD SIZE GRADE 2 GRADE 5 GRADE 8

7/16 1/4 - 2O UNC 6 (7) 8 (11) 12 (16)

7/16 1/4 - 28 UNF 6 (8) 10 (13) 14 (18)

1/2 5/16 - 18 UNC 11 (15) 17 (23) 25 (33)

1/2 5/16 - 24 UNF 13 (17) 19 (26) 27 (37)

9/16 3/8 - 16 UNC 20 (27) 31 (42) 44 (60)

9/16 3/8 - 24 UNF 23 (31) 35 (47) 49 (66)

5/8 7/16 - 14 UNC 32 (43) 49 (66) 70 (95)

5/8 7/16 - 20 UNF 36 (49) 55 (75) 78 (106)

3/4 1/2 - 13 UNC 49 (66) 76 (103) 106 (144)

3/4 1/2 - 20 UNF 55 (75) 85 (115) 120 (163)

7/8 9/16 - 12 UNC 70 (95) 109 (148) 153 (207)

7/8 9/16 - 18 UNF 79 (107) 122 (165) 172 (233)

15/16 5/8 - 11 UNC 97 (131) 150 (203) 212 (287)

15/16 5/8 - 18 UNF 110 (149) 170 (230) 240 (325)

1-1/8 3/4 - 10 UNC 144 (195) 266 (360) 376 (509)

1-1/8 3/4 - 16 UNF 192 (260) 297 (402) 420 (569)

1-5/16 7/8 - 9 UNC 166 (225) 430 (583) 606 (821)

1-5/16 7/8 - 14 UNF 184 (249) 474 (642) 668 (905)

1-1/2 1 - 8 UNC 250 (339) 644 (873) 909 (1232)

1-1/2 1 - 12 UNF 274 (371) 705 (955) 995 (1348)

1-1/2 1 - 14 UNF 280 (379) 721 (977) 1019 (1381)

1-11/16 1-1/8 - 7 UNC 354 (480) 795 (1077) 1288(1745)

1-11/16 1-1/8 - 12 UNF 397 (538) 890 (1206) 1444 (1957)

1-7/8 1-1/4 - 7 UNC 500 (678) 1120 (1518) 1817 (2462)

1-7/8 1-1/4 - 12 UNF 553 (749) 1241 (1682) 2013 (2728)

2-1/16 1-3/8 - 6 UNC 655 (887) 1470 (1992) 2382 (3228)

2-1/16 1-3/8 - 12 UNF 746 (1011) 1672 (2266) 2712 (3675)

2-1/4 1-1/2 - 6 UNC 870 (1179) 1950 (2642) 3161 (4283)

2-1/4 1-1/2 - 12 UNF 979 (1327) 2194 (2973) 3557 (4820)

Proper torque for metric fasteners used on Great Bend equipment.

Recommended torque in foot pounds (newton Meters).*

WRENCH BOLT

SIZE DIA. ASTM ASTM ASTM ASTM

(mm) “A” (mm) “B” 4.6 8.8 9.8 10.9

8 5 1.8 (2.4) 5.1 (6.9) 6.5 (8.8)

10 6 3 (4) 8.7 (12) 11.1 (15)

13 8 7.3 (10) 21.1 (29) 27 (37)

16 10 14.5 (20) 42 (57) 53 (72)

18 12 25 (34) 74 (100) 73 (99) 93 (126)

21 14 40 (54) 118 (160) 116 (157) 148 (201)

24 16 62 (84) 167 (226) 181 (245) 230 (312)

30 20 122 (165) 325 (440) 449 (608)

33 22 443 (600) 611 (828)

36 24 211 (286) 563 (763) 778 (1054)

41 27 821 (1112) 1138 (1542)

46 30 418 (566) 1119 (1516) 1547 (2096)

*Use 75% of the specified torque value for plated

fasteners. Use 85% of the specified torque

values for lubricated fasteners.

Numbers appearing on bolt heads

indicate ASTM class.

METRIC

AMERICAN

Bolt Head Markings

Wrench

Size “A”

Bolt

Diameter “B”

SAE Grade 8

(6 Dashes)

SAE Grade 2

(No Dashes)

SAE Grade 5

(3 Dashes)

Wrench

Size “A” 8.8

Bolt

Diameter “B”

P.O. Box 1039 • Selma, AL 36702-1039

(334) 874-2700

BUSH HOG,L.L.C.

GB Backhoe Cover !! Bush 0

2165 5f6b01e9-24b8-4105-b676-499699830a70

2165 to the manual 5f6b01e9-24b8-4105-b676-499699830a70

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