Bush Hog TOUGH 4045 User Manual

1106 $4.00

50051956

OPERATOR’S MAN UA L

Front End Loaders

®

BUSH HOG, L.L.C.

Models 3545 / 4045 / 5045 / 6045

ASSEMBLY ● OPERATION ● MAINTENANCE

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 WITH­OUT 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.

3545 / 4045 / 5045 / 6045

TABLE OF CONTENTS

SECTION/PARA PAGE

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

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

Safety Alert Symbols..................................................4

Safety Precautions .....................................................5

Federal Laws & Regulations.......................................7

I INTRODUCTION & DESCRIPTION...........................8

1-1 Introduction...........................................................8

1-2 Description ...........................................................8

II LOADER MOUNTING & DISMOUNTING................10

2-1 Preparing Tractors..............................................10

2-2 Mounting Loader ................................................10

2-3 Dismounting Loader ..........................................12

III OPERATING INSTRUCTIONS ................................13

3-1 General Safety ...................................................13

3-2 Pre Operation.....................................................13

3-3 Initial Loader Operation......................................13

3-4 External Loader and/or Tractor Valve ................14

3-5 Loader Mounted or Tractor Mounted

Single Lever Control Handle.....................................14

3-6 Loader Mounted Series Control Valve With Single

Lever Control Handle................................................14

3-7 Neutral Position..................................................14

3-8 Float Position......................................................14

3-9 Regenerative Valve Position..............................14

3-10 Load Sense Loader Valve................................14

3-11 Loader Operation .............................................14

1

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 opera­tor 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
submitted 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.

3-12 Removing Air From Hydraulic System ...............15

3-13 Hose Identification............................................15

3-14 Bucket Level Indicator Rod ..............................15

3-15 Bale Spear Operation.......................................20

3-16 Fork Lift Operation............................................21

3-17 Transporting.....................................................21

3-18 Skid Steer Quick Hitch Operation.....................22

IV MAINTENANCE .....................................................23

4-1 Maintenance Check List ....................................23

4-2 Lubrication.........................................................23

4-3 Hydraulic System

Pressure Requirements.....................................24

4-4 Troubleshooting.................................................24

V ASSEMBLY..............................................................26

5-1 Tractor Preparation ............................................26

5-2 Tractor Ballast....................................................27

5-3 Installation..........................................................27

5-4 Hydraulic Hookup...............................................27

5-5 Bucket Level Indicator Rod ................................27

5-6 Fork Lift Option...................................................28

5-7 Bale Spear Option..............................................28

5-8 Optional Bucket Items........................................29

Torque Specifications...............................................30

Safety Decals ...........................................................31

SECTION/PARA PAGE

OPTIONAL EQUIPMENT INSTRUCTIONS AT END OF MANUAL

NOTE: Some optional equipment information may not apply to your particular loader.

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 work­manship 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 equip­ment 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 equip­ment 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 war­ranties, 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

2

DEALER PREPARATION CHECK LIST

3545 / 4045 / 5045 / 6045

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 torque chart.
❏ Machine operates properly.
❏ Customer has appropriate mounting kit for his tractor and loader.
❏ Customer has appropriate attachments for loader operations. ( Buckets for lifting loose

materials; bale spear for lifting round bales; fork lift for lifting palletized material)

CAUTION

USE ROPS (ROLLOVER PROTECTIVE STRUCTURE) AND
SEAT BELT EQUIPPED TRACTORS FOR OPERATOR USE
IN ALL LOADER OPERATIONS.

❏ Operators manual has been delivered to owner and he has been instructed on the safe

and proper use of the front end loader.

Dealer’s Signature

Purchaser’s Signature

THIS CHECK LIST TO REMAIN IN OPERATOR’S MANUAL

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

above before delivery of this implement to the customer.

3

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 safe­ty 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.

White letters on RED

Black letters on ORANGE

Black letters on YELLOW

This signal word indicates a potentially hazardous situation
which, if not avoided, will result in death or serious injury.

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.

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.

4

IMPORTANT SAFETY PRECAUTIONS

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 safety precautions could result
in death or 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 seri­ous injury or death and equipment damage.

2. Use ROPS (Roll-Over Protective Structure) and seat belt equipped tractors for operator use in all loader operations.

3. Add wheel ballast or rear 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 LOADER

1. Read the loader operator’s manual to learn how to operate your loader safely. Failure to do so could result in seri­ous injury or death and equipment damage.

2. Become familiar with all the machine’s controls and all the caution, warning and danger decals affixed to the
machine before attempting to start or operate.

3. Improper use of a loader can cause serious injury or death.

4. Do not lift or carry anybody on the loader or in the bucket or attachment.

5. Never allow anyone to get under the loader bucket or reach through the booms when the bucket is raised.

6. Do not walk or work under a raised loader bucket or attachment unless it is is securely blocked or held in position

7. Avoid overhead wires and obstacles when loader is raised. Contacting electrical lines can cause electrocution.

8. Make sure all parked loaders on stands are on a hard, level surface.

9. Use a piece of cardboard or wood rather than hands and wear eye protection when searching for hydraulic leaks.
Escaping hydraulic oil under pressure can penetrate skin. If oil is injected into skin, it must be surgically removed
within a few hours by a doctor or gangrene may result.

5

SAFETY PRECAUTIONS CONTINUED

10. Before disconnecting hydraulic lines, relieve all hydraulic pressure.

11. Do not tamper with the relief valve setting. The relief valve is pre-set at the factory. Changing the setting can
cause overloading the loader and tractor and serious operator injury may result.

12. Always wear safety goggles when repairing or servicing machine.

13. When servicing or replacing pins in cylinder ends, buckets, etc., always use a brass drift and hammer. Failure to
do so could result in injury from flying fragments.

14. Replace damaged or illegible safety decals. See decal page for required decals.

15. Do not modify or alter or permit anyone else to modify or alter the loader, any of its components or any loader
function without first consulting your local dealer.

OPERATING THE LOADER

1. It is the loader owner’s responsibility to instruct and have a person read operator’s manual, safety decals and
become familiar with machine controls before allowing them to operate loader.

2. Do not allow children to operate the loader.

3. Before starting or operating the equipment, make a walk around inspection and check for loose or damaged
components. Correct any deficiency before starting.

4. Keep the area of operation clear of all persons, particularly small children. The operator should cease operation
whenever anyone comes within the operating area.

5. Operate the loader from the “Operator’s Seat Only.”

6. Exercise caution when operating the loader with a raised loaded bucket, fork, or large round hay bale handling
attachments.

7. Avoid loose fill, rocks and holes. They can be dangerous for loader operation or movement.

8. Be extra careful when working on inclines.

9. Allow for the loader length when making turns.

10. Stop the loader arms gradually when lowering or lifting.

11. Use caution when handling loose or shiftable loads.

12. Carry loader arms at a low position during transport.

13. Lower loader arms, stop engine, and lock brakes before leaving the tractor seat.

14. Operate the loader controls only when properly seated at the controls.

15. Do not use loader for handling large, heavy objects such as logs, oil drums, etc.

16. Handling large, heavy objects is dangerous due to:
*Possibility of rolling the tractor over.
*Possibility of upending the tractor.
*Possibility of the object rolling or sliding down the loader arms onto the operator.

17. Use large round hay bale handler attachment with bale retaining devices (grapples, bale spears, clamps, etc.) to
handle large round hay bales. Failure to use retaining devices could allow round hay bales to roll or fall down
loader boom arms onto the operator causing serious injury or death and equipment damage.

6

IMPORTANT FEDERAL LAWS AND REGULATIONS* CONCERNING

7

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 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.

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.

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.)

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.

INTRODUCTION AND DESCRIPTION

Figure 1-1 Major Components

Bucket Level
Indicator Rod

Bucket Cylinder

Cross Tube

Bucket

SECTION I

Parking Stands Stored

1-1 INTRODUCTION

We are pleased to have you as a Great Bend cus­tomer. Your Front End Loader has been carefully
designed to give maximum service with minimum
down time. This manual is provided to give you the
necessary operating and maintenance instructions
for keeping your front end loader in top operating
condition. Please read this manual thoroughly.
Understand what each control is for and how to use
it. Observe all safety precautions decaled on the
machine and noted throughout the manual for safe
operation of implement. If any assistance or addi­tional information is needed, contact your authorized
Great Bend dealer.

Pedestal

Mainframe Boom

Boom Cylinder

1-2 DESCRIPTION

Model 3545/4045/5045/6045 Front End Loaders are
designed for two wheel and four wheel drive trac­tors. They come equipped with parking stands to
support the loader so the tractor can be “driven in”
for quick attachment and a bucket level indicator that
allows operator to gauge bucket position when the
bucket cannot be seen. Available attachments
include buckets for lifting loose materials; a bale
spear for lifting round hay bales; and a fork lift for
palletized material. All operations should be con­ducted within the loader limits specified in Table 1-1.

8

Table 1-1 TECHNICAL SPECIFICATIONS

SERIES LOADER 3545 4045 5045 6045

A. Maximum Lift Height - Measured at Pivot Pin 120” 126” 133” 153”
B. Maximum Lift Height - Under Level Bucket 110” 116” 123” 144”
C. Clearance with Attachment Dumped 45° 92 in. 90” 97” 105 125”
D. Reach at Maximum Height 23” 36” 30” 30”
E. Maximum Dump Angle 45° 45° 45° 42°
F. Reach with Bucket on Ground 77 in. 78 in. 75” 83”

G. Maximum Rollback Angle 25° 25° 25° 25°

H. Digging Depth 3.5 in. 3.5 in. 7” 6”
J. Overall Height in Carry Position 52 in. 63 in. 66” 76”
U. Lift Capacity to Maximum Height - At Pivot Pin 3000 lbs. 3500 lbs. 4000 lbs. 4950 lbs.
V. Lift Capacity to Maximum Height - 31.5” 1950 lbs. 2200 lbs 2560 lbs. 3075 lbs.

Forward of Pivot Pin
W. Lift Capacity to 59” Height - At Pivot Pin 3900 lbs. 4100 lbs. 5000 lbs. 6500 lbs.
X. Lift Capacity to 59” Height - 31.5” 2500 lbs. 2950 lbs. 3500 lbs. 4325 lbs.

Forward of Pivot Pin
Y. Breakout Force - At Pivot Pin 4300 lbs. 5000 lbs. 6000 lbs. 8450 lbs.
Z. Breakout Force - 31.5” Forward of Pivot Pin 2750 lbs. 3500 lbs. 4280 lbs. 5400 lbs.
VV. Rollback Force at Maximum Height - 3550 lbs. 5100 lbs. 4800 lbs. 5820 lbs.

31.5” Forward of Pivot Pin

XX. Rollback Force at 59” Height - 4050 lbs. 5300 lbs. 5600 lbs. 6180 lbs.

31.5” Forward of Pivot Pin

ZZ. Rollback Force at Ground Level - 3550 lbs. 3600 lbs. 3750 lbs. 3840 lbs.

31.5” Forward of Pivot Pin
Raising Time - Ground Level to Full Height 5 sec. 5 sec. 5 sec. 9 sec.
Lowering Time - Full Height to Ground 4 sec. 3 sec. 3 sec. 6 sec.
Bucket Dumping Time - Full Rollback 5 sec. 5 sec. 5 sec. 6 sec.

to Full Dump

Bucket Rollback Time - Full Dump 3 sec. 3 sec. 3 sec. 4 sec.

to Full Rollback

Tractor HP Range 40 - 60 40 - 70 60 - 90 70 - 110

Based On Tractor Hydraulic System:

Pressure 2850 psi 2850 psi 2850 psi 2850 psi
Flow 11 gpm 11 gpm 16 gpm 29 gpm

2 & 4 WD 2 & 4 WD 2 & 4 WD 2 & 4 WD

9

SECTION II

LOADER MOUNTING AND DISMOUNTING

2-1 PREPARING TRACTOR

CAUTION

TRACTORS THAT HAVE MOVABLE AXLES
MUST BE SET FORWARD IN THE LONG WHEEL­BASE POSITION AS SHOWN IN FIGURE 2-1 TO
PREVENT EXCESSIVE LEVERAGE BEING
EXERTED ON THE TRACTOR FRAME. FAILURE
TO DO SO CAN RESULT IN PERSONAL INJURY
AND EQUIPMENT DAMAGE. REFER TO TRAC­TOR OPERATOR’S MANUAL FOR ABOVE PRO­CEDURES AND SPECIFICATIONS FOR YOUR
TRACTOR.

A. Check air pressure in tractor tires to be sure it

is adequate for heavy loads.

B. Add rear wheel weights, fluid in tires, or equiv-

alent to provide sufficient tractor stability.

C. It is recommended that tractor wheels be

moved to the widest settings.

D. Check tractor hydraulic oil reservoir to be sure

it is full.

E. Refer to your tractor operator’s manual for

above procedures and specifications for your tractor.

2-2 MOUNTING LOADER

Figure 2-1

Short Wheelbase

Long Wheelbase

Figure 2-2 Apply Grease To These Areas

To aid in mounting and dismounting loader, apply a
small amount of grease, if needed, to each loader
bracket in area of top receiver and guide. Figure 2-2.

A. Slowly drive tractor to a position where the

hoses can be connected to the quick couplers. Stop

the engine. Connect the loader hydraulic hoses to
the correct couplers. Figure 2-3.

B. Retract Loader Lift Cylinders. Figure 2-3.

Figure 2-3 Drive In Close Enough To Alllow Connecting Hydraulic Hoses To Tractor Outlets

10

C. Check that lift cylinders are fully retracted.

Figure 2-3. Then drive tractor forward. Use bucket
cylinders to position height of outer pedestal top pin.
Figure 2-4.

Figure 2-4 Outer Pedestal Top Pin

D. Align outer pedestal top pin with mounting
bracket guide post on both sides. Make sure loader
is centered right to left on both brackets.

E. Extend the bucket cylinders to lower the
pedestal top pins into mounting bracket receivers on
both sides.

F. Extend lift cylinders slowly making sure loader
is seated completely in mounting bracket top and
bottom receivers. Retract bucket cylinder until buck­et is approximately 1/2” off ground.

G. Slide quick pin into position and let pin handle
extend downward through the retaining loop at the
bottom of the subframe. Figures 2-5 and 2-6

Figure 2-5 Quick Pin

Figure 2-6 Pin In Operating Position

H. Remove parking stands from the parked posi­tion and return them to their storage positions in the
cross tube. Figure 2-7

Figure 2-7 Storing Parking Stand

Secure parking stands in the storage position by
using the provided pins. Figure 2-8

Figure 2-8 Parking Stand Stored

I. Lower loader to ground and secure loader
hydraulic hoses in a protected area.

IMPORTANT
To avoid hydraulic hose damage, be alert and
make sure hoses do not catch on tractor and/or
loader during mounting or dismounting.

11

2-3 DISMOUNTING LOADER

CAUTION

ALWAYS PARK LOADER WITH MATERI­AL BUCKET OR AUTHORIZED BUSH
HOG ATTACHMENT ATTACHED TO THE
LOADER.

CAUTION

BEFORE LEAVING THE TRACTOR SEAT,
LOWER ATTACHMENT OR LOADER
BOOM TO GROUND, STOP ENGINE,
LOCK BRAKES, RELIEVE HYDRAULIC
PRESSURE, AND REMOVE KEY.

CAUTION

DO NOT STAND, WALK, OR WORK UNDER
A RAISED LOADER OR ATTACHMENT
UNLESS IT IS SECURELY BLOCKED OR
HELD IN POSITION. ACCIDENTAL MOVE­MENT OF A CONTROL LEVER/LEVERS OR
LEAKS IN THE HYDRAULIC SYSTEM
COULD CAUSE THE LOADER TO DROP,
OR ATTACHMENT TO DUMP, CAUSING
SEVERE INJURY.

Figure 2-9 Parking Stand Installed

CAUTION

DO NOT ALLOW BYSTANDERS IN LOADER
AREA.

IMPORTANT
Never allow weight of tractor to be placed on
parking stands when mounting or dismounting
loader.

A. Position the loader on a hard level surface.
The more level the surface, the easier the loader is
to mount and dismount.

B. Raise loader, dump bucket over, and then
lower loader so that bucket cutting edge is approxi­mately 1/2” off of surface.

C. Remove parking stands from their storage
positions in the boom crosstube as shown in Figure
2-8.

D. Position parking stands in attaching brackets
on inside of each loader arm and secure. Figure 2-9.

E. Dismounting procedures will be the reverse of
the mounting procedure.

F. Rollback bucket slightly while lowering loader
boom down until the parking stands make firm con­tact with ground. Dump bucket until bucket touches
the surface.

NOTE
Driving the tractor forward slowly while position­ing loader will allow parking stands to contact
ground firmly.

Attaching Bracket Long End Positioned Rearward

G. Retract loader lift cylinders

H. Slowly rollback bucket while driving slightly
forward with tractor. Doing this will allow mounting
brackets to guide loader as loader is being parked

off of tractor.

I. Rollback bucket completely. Make sure all loader
components clear tractor. Stop the tractor engine and

then work valve control lever/levers to relieve hydraulic

fluid pressure in lines. Refer to tractor operator manual

for additional information.

J. Disconnect loader hoses from quick couplers.

Start tractor and slowly back tractor away from loader.

Figures 2-10, 2-11, 2-12

Figure 2-10 Hydraulic Hoses - Quick Couplers

12

I M P O R T A N T
To avoid hydraulic hose damage, be alert
and make sure hoses do not catch on trac­tor and/or loader during mounting or dis­m o u n t i n g .

Figure 2-11 Preparing To Disconnect Hydraulics

WARNING

MAKE SURE PARKED LOADER IS ON A
HARD LEVEL SURFACE. ENGAGE ALL
SAFETY DEVICES TO PREVENT LOADER
FROM FALLING AND BEING DAMAGED
OR INJURING SOMEONE. DO NOT REPAIR
LOADER IF IT IS NOT MOUNTED ON THE
TRACTOR. LOSS OF HYDRAULIC FLUID
OR REMOVAL OF PARTS COULD CAUSE
LOADER TO COLLAPSE RESULTING IN
INJURY.

Figure 2-12 Tractor Backed Away From Loader

SECTION III

OPERATING INSTRUCTIONS

3-1 GENERAL SAFETY

Only qualified people familiar with this operator’s
manual should operate this machine. Operator
should wear hard hat, safety glasses, and safety
shoes. The operator should read, understand and
practice all safety messages shown on the caution,
warning and danger decals affixed to the loader to
avoid serious injury or death. It is recommended that
tractor be equipped with Rollover Protective System
(ROPS) and a seat belt be used. Check for ditches,
stumps, holes or other obstacles that could upset
tractor or damage loader. Always turn off tractor
engine, set parking brake, and lower loader to
ground before leaving tractor operator’s seat.

3-2 PRE-OPERATION

IMPORTANT

Do not extend bucket cylinders without quick

hitch attachment installed on loader. Failure to

follow these instructions could cause bucket
cylinder damage and will void loader warranty.

WARNING

ESCAPING HYDRAULIC FLUID UNDER
PRESSURE CAN HAVE SUFFICIENT
FORCE TO PENETRATE SKIN, CAUSING
SERIOUS PERSONAL INJURY. BEFORE
APPLYING PRESSURE TO SYSTEM, BE
SURE ALL CONNECTIONS ARE TIGHT
AND THAT LINES, TUBES, AND HOSES
ARE NOT DAMAGED. FLUID ESCAPING
FROM A VERY SMALL HOLE CAN BE
ALMOST INVISIBLE. USE A PIECE OF
CARDBOARD OR WOOD, RATHER THAN
HANDS, TO SEARCH FOR SUSPECTED
LEAKS. IF INJURED BY ESCAPING FLUID,
SEE A DOCTOR AT ONCE. SERIOUS
INFECTION OR REACTION CAN DEVELOP
IF PROPER MEDICAL TREATMENT IS NOT
ADMINISTERED IMMEDIATELY.

NOTE

Check the tractor hydraulic fluid reservoir and

fill, if required.

3-3 INITIAL LOADER OPERATION

NOTE

Keep engine speed at low idle during the initial

loader operation.

13

3-4 EXTERNAL LOADER AND/OR TRAC-

TOR VALVE.

NOTE

When properly installed, the tractor remote valve
or external valve control lever/levers will control
the loader hydraulic circuits as described below.
Refer to tractor Operator’s Manual for further
explanation of tractor remote control
lever/levers.

IMPORTANT
Contaminants in hydraulic fluid can cause valve
spools to stick. BE ALERT when operating
loader and follow your tractor Operator’s Manual
hydraulic fluid maintenance schedule.

3-5 LOADER MOUNTED CONTROL
VALVE EQUIPPED WITH SINGLE LEVER
CONTROL HANDLE OR TRACTO R
REMOTE VA LVE EQUIPPED WITH SIN­GLE LEVER CONTROL HANDLE

If your loader utilizes a loader control valve equipped
with single lever control handle or tractor remote
valve equipped with single lever control handle, it will
function as shown in Figure 3-1.

Figure 3-1

3-7 NEUTRAL POSITION

The loader external valve provided by Bush Hog has
a “neutral position” which prevents movement of the
loader or attachment. When the control handle is
manually released from the work position, the valve
spool will return to the neutral position.

3-8 FLOAT POSITION

The loader external valve provided by Bush Hog has
a “float position” incorporated into the lift cylinder cir­cuit which allows the loader to float. This float fea­ture is important for satisfactory operation when
scraping, sweeping, leveling, or any job where it is
necessary to follow the contour of the surface. To
activate the float position, lower the bucket or attach­ment and push the control handle all the way for­ward into detent. The valve will stay in float detent
position until the operator manually pulls the control
handle out of detent position to deactivate float.

3-9 REGENERATIVE VALVE POSITION

When the handle is pushed all the way to the right,
it will go past the dump detent position into the
regenerative position. This position requires the
operator to hold it in place. This feature enhances
the performance and speed of the dump procedure.

3-6 LOADER MOUNTED SERIES CON­TROL VA LVE EQUIPPED WITH SINGLE
LEVER CONTROL HANDLE

If your loader utilizes a loader mounted series con­trol valve equipped with single lever control handle, it
will function as shown in Figure 3-2.

Figure 3-2

3-10 LOAD SENSE LOADER VALVE

IMPORTANT
If your loader is equipped with a load sense type
control valve it may demonstrate the following
operation characteristic. Attempting to raise the
boom by finely feathering the control lever may
actually allow the boom to lower very slowly. To
prevent this from happening, move the control
lever far enough to ensure that the boom raises.

3-11 LOADER OPERATION

Before operating the loader, fully raise and lower the
boom three or four times. Then raise the loader
bucket approximately four (4) feet above the ground
and cycle the bucket two or three times. Lower the
bucket or attachment to the ground. Check the trac­tor hydraulic fluid level and fill as required. Refer to
the tractor Operator’s Manual for the proper
hydraulic fluid and the correct hydraulic fluid level.

14

CAUTION

BEFORE LEAVING THE TRACTOR SEAT,
LOWER ATTACHMENT OR LOADER BOOM
TO GROUND, STOP ENGINE, LOCK
BRAKES, RELIEVE HYDRAULIC PRES­SURE, AND REMOVE KEY.

IMPORTANT
Always keep the cylinders in a retracted position
when the loader is not in use to guard against
rust and contamination which may cause dam­age to the cylinder rods and hydraulic system.

3-12 REMOVING AIR FROM HYDRAULIC
SYSTEM

Repeat raising and lowering the loader boom and
bucket operations until all the air is removed from
the system and the system responds properly.

3-13 HOSE IDENTIFICATION

Metal lines on the loader are color coded. Check
loader functions. Refer to instruction sheets for
hydraulic valve option on your loader.

Figure 3-3
Bucket Level Indicator Rod Showing That The
Bucket Is Resting Flat On The Surface

Rod Kink In Bracket Slot Indicator Rod

3-14 BUCKET LEVEL INDICATOR ROD

A bucket level indicator rod (Figure 3-3), located on
the bucket cylinder, can be used to determine bucket
angle. Before beginning work, observe the position
of indicator rod with the bucket flat on the ground.
The “kink” in the indicator rod should be located in
the bracket slot. If the kink is not in centered in the
slot, readjust the bracket. Refer to the assembly
instructions. Raise boom to several different posi­tions and operate the bucket cylinders. Observe the
indicator rod. Once familiar with the indicator rod
positions, operation of the loader will be easier and
more efficient.

The text and illustrations on the following pages
offer suggested loader and tractor operating
techniques.

Indicator Rod

Lower Mounting Location

15

FILLING THE BUCKET
Approach and enter the pile with a level bucket.

Loaders with 1-lever control, ease lever back and
toward you to lift and rollback the bucket.

...a level bucket throughout the lifting cycle resists
bucket lift and increases breakaway effort.

NOTE; Do not be concerned if the bucket is not com­pletely filled during each pass. Maximum productivity
is determined by the amount of material loaded in a
given period of time. Time is lost if two or more
attempts are made to fill the bucket on each pass.

LIFTING THE LOAD

WARNING

DO NOT LIFT OR CARRY ANYONE IN THE
BUCKET OR ON ANY OTHER PORTION OF
THE LOADER OR LOADER ATTACHMENT.
INADVERTENT MOVEMENT OF THE
LOADER OR ATTACHMENT COULD
RESULT IN SERIOUS INJURY OR DEATH
FROM FALLING OR CRUSHING.

Loaders with 2-lever controls, ease both levers back
to lift and rollback the bucket.

The lift and rollback of the bucket will increase effi­ciency because...

CAUTION

MAKE SURE MATERIAL IN BUCKET CAN­NOT ROLL OUT AND DOWN ON TRACTOR
WHEN BUCKET IS RAISED TO FULL
HEIGHT. KEEP CLEAR OF OVERHEAD
OBSTRUCTIONS SUCH AS TREES, LIMBS
OR POWER LINES WHEN RAISING THE
BUCKET

When lifting the load, keep the bucket positioned to
avoid spillage.

16

CAUTION

DO NOT ATTEMPT TO LIFT BUCKET
LOADS IN EXCESS OF CAPACITIES
LISTED IN TABLE 1-1 TECHNICAL SPECI­FICATIONS.

CARRYING THE LOAD

DUMPING THE BUCKET

Position the bucket as low as possible below the
level of the tractor hood for maximum stability and
visibility, whether the bucket is loaded or empty.

Use extreme caution when operating the loader on a
slope and keep the bucket as low as possible. This
keeps the bucket and tractor center of gravity low
and will provide maximum tractor stability.

CAUTION

OPERATING THE LOADER ON A HILLSIDE

IS DANGEROUS. EXTREME CARE IS

RECOMMENDED.

Lift the bucket high enough to clear the side of the
vehicle. Move the tractor in as close to the side of
the vehicle as possible, then dump the bucket.

LOWERING THE BUCKET
After the bucket is dumped, back away from the

vehicle while lowering and rolling back the bucket.

FLOAT POSITION

LOWER

DUMP

DO THIS NOT THIS

When transporting the load, keep the bucket as low
as possible to avoid tipping, in case a wheel drops in
a rut.

NOT THIS

DO THIS

1-LEVER

CONTROL

ROLLBACK

FLOAT POSITION

LOWER

2-LEVER

CONTROLS

RAISE

DUMP

ROLLBACK

RAISE

17

OPERATING WITH FLOAT CONTROL
During hard surface operation, keep the bucket level

and put the lift control in the float position to permit
the bucket to float on the working surface. If
hydraulic down pressure is exerted on the bucket, it
will wear faster than normal.

FLOAT

The float will also prevent the mixing of surface
material with stockpile material. The float position
will reduce the chance of surface gouging when
removing snow or other material.

FLOAT

Sidecutting is a good technique for cutting down a
big pile.

If the piles are too high and liable to cause cave-in,
use the loader to break down the sides until a slot
can be cut over the top.

SURFACE MATERIAL

LOADING FROM A BANK
Choose a forward gear that provides sufficient

ground speed for loading

Exercise caution when undercutting high banks. Dirt
slides can be dangerous. Load from as low as possi­ble for maximum efficiency. Loader lift and break­away capacity diminish as loading height is
increased.

Another method for large dirt piles is to build a ramp
approach to the pile.

It’s important to keep the bucket level when
approaching a bank or pile. this will help prevent
gouging the work area.

18

PEELING AND SCRAPING BACKFILLING

DO THIS

6”

Backgrade occasionally with a loaded bucket to

Use a slight bucket angle, travel forward, and hold the
lift control forward to start the cut. Make a short, angle
cut approximately 6” deep and break-out cleanly.

With the bucket level, start a cut at the notch approx­imately 2” deep. Hold the depth by feathering the
bucket control to adjust the cutting lip up or down.
When the front tires enter the notch, adjust the lift
cylinder to maintain proper depth.

keep the working surface free of ruts and holes.
Hold the lift control forward in float position so the
full weight of the bucket is scraping the ground.
Use only the heel of the bucket while backgrading.

NOT THIS

IMPORTANT: To prevent damage to cylinders:
(1) Do not backgrade with bucket cylinders extended.
(2) Always backgrade with valve in float position.

3RD CUT , 4TH CUT, ETC.

Make additional passes until the desired depth is
reached. During each pass, only use the bucket con­trol while at working depth. This will allow you to
concentrate on controlling the bucket angle to main­tain a precise cut.

LOADING LOW TRUCKS OR SPREADERS FROM
A PILE

Approach the pile with a flat bucket.

DO THIS

NOT THIS

Poor methods actually move no more dirt and make
it more difficult to hold a level grade.

For faster loading, minimize the angle of turn and
length of run between pile and spreader.

Do not use the bucket in the dumped position
for bulldozing or backgrading. This method,
shown above, will impose severe shock load­ings on the dump linkage, the bucket cylinder,
and the tractor.

19

Leave dirt in the bucket because dumping on each
pass wastes time.

DITCH

SOIL PILE

Operate at right angles to the ditch. Take as big a
bite as the tractor can handle without lugging down.

DITCH

HANDLING LARGE HEAVY OBJECTS

WARNING

Do not use front end loaders for handling
large heavy objects such as logs or oil
drums. Handle large round hay bales only

when loader is equipped with Bush Hog

Bale Spear Attachment.
Handling large heavy objects can be

extremely dangerous due to:

★ Possibility of rolling the tractor over.
★ Possibility of upending the tractor.
★ Possibility of the object rolling or sliding

down the loader arms onto the operator.

3-15 BALE SPEAR OPERATION

The bale spear (Figure 3-4) is intended for handling

large round bales. Before operation, set tractor
wheels to tractor manufacturer’s widest recommend-

ed settings and add ballast as necessary to provide

adequate stability for handling round bales. It is rec­ommended that tractor be equipped with a ROPS
and seat belts. Approach bale from downhill side
with tractor in low gear. Run spears all the way

into bale with long spear as close to center as
possible. Lift bale just high enough for adequate
ground clearance to transport, maintaining good

visibility. Always carry load as low as possible

when transporting, for improved stability. Use

low gear on downhill grades. Unload round bales on

a level surface.

Leave dirt which drifts over the side of the bucket for

final clean-up.

Pile dirt on the high side for easier backfilling on a

slope.

Figure 3-4 Bale Spear

Quick Hitch Long Spear Round Bale

20

3-16 FORK LIFT OPERATION

WARNING

TO AVOID SERIOUS INJURY OR DEATH:
★ NEVER LIFT LARGE ROUND HAY

BALES OR OTHER LOADS ON THE
FORK LIFT ATTACHMENT THAT
COULD ROLL BACK ONTO TRAC­TOR OPERATOR AREA.

★ NEVER USE FORK LIFT ATTACH-

MENT TO LIFT OR SUPPORT
PEOPLE.

★ TRANSPORT LOADS LOW AND

SLOW.

★ AVOID CONTACT WITH POWER

LINES.

The fork lift attachment (Figure 3-5) is intended for
handling palletized material. It is recommended that
tractor be equipped with ROPS and seat belts. Use
the loader dump cylinders to give the forks the
desired tilt. Position the forks on their support rods to
the desired width so that the load will be carried
approximately equal on each fork. Position load as
far back as possible.

3-17 TRANSPORTING

When transporting on road or highway, day or night,
use tractor flashing warning lights unless prohibited
by law. Carry load as low as possible maintaining
adequate ground clearance and good visibility.
Reduce tractor ground speed when carrying a load.
Take extra care when traveling over rough terrain or
on slopes.

WHEN TRANSPORTING A LOAD, KEEP
THE ATTACHMENT AS LOW AS POSSIBLE
TO RESIST TIPPING IN CASE A WHEEL
DROPS IN A RUT.

Figure 3-5
Fork Lift Attachment

Adjustable Forks

21

ALWAYS CHECK TO INSURE THAT QUICK
HITCH PINS ARE IN THE LATCHED POSI­TION BEFORE OPERATING LOADER OR
ACCINDENTAL DISENGAGEMENT OF THE
ATTACHMENT COULD RESULT.

CAUTION

CAUTON

3-18 SKID STEER QUICK HITCH OPERATION

The quick hitch (Figure 3-6) is designed to allow
easy mounting and dismounting of skid steer
attachments from loader. With attachment on flat,
level surface, mount as follows:

Tilt quick hitch slightly forward at top and slowly
drive into attachment.

Tilt quick hitch backward using bucket cylinder so
that bottom of attachment will swing into position.

Rotate handles downward, locking spring-loaded pins
into place in slot on attachment hitch for operation.

To dismount the attachment:
Tilt quick hitch backward and rotate handles up to
disengage pins. Reverse the mounting procedure.

Hook quick hitch under top cuff on attachment and
lift off ground using boom cylinders only.

Figure 3-6 A, B, C, & D

Quick Hitch Operation

A. Top Cuff Quick Hitch Tilted Forward

CAUTION

ALWAYS CHECK TO INSURE THAT QUICK
HITCH PINS ARE IN THE LATCHED POSI­TION BEFORE OPERATING LOADER OR
ACCINDENTAL DISENGAGEMENT OF THE
ATTACHMENT COULD RESULT.

Spring-Loaded
Pins Raised

B. Drive Into Attachment C. Raise And Roll Back Attachment D. Lower Spring-Loaded Pins

22

SECTION IV

4-1 MAINTENANCE CHECK LIST

Perform scheduled maintenance as outlined below.
Lower machine to ground, turn off tractor, and set
parking brake before doing maintenance inspections
or work. All bolts should be torqued as recommend­ed in torque chart unless otherwise indicated.

WARNING

THE LOADER CAN FALL FROM
HYDRAULIC SYSTEM FAILURE. TO
AVOID SERIOUS INJURY OR DEATH,
SECURELY SUPPORT LOADER BEFORE
WORKING UNDERNEATH.

BEFORE EACH USE

1. Inspect hydraulic lines and fittings for wear or
leaks. Repair or replace if needed.

2. Inspect all pivot pins for wear. Make certain car
riage bolts, lockwashers and hex nuts are
installed to retain each pivot pin.

3. Check all bolts for tightness.

Figure 4-1
Mounting Kit

Apply Small Amount
Of Grease

Check Torque On All
Mounting Hardware

4-2 LUBRICATION (Figure 4-2)

NOTE
The multi-purpose grease referenced in this section
is an NLGI grade 2 type grease.

BEFORE EACH USE

1. Pivot Pins - Apply multi-purpose grease to
each fitting.

2. Hydraulic Oil - Cycle boom and bucket cylinders
2 or 3 times before each use, then check
hydraulic oil level in tractor reservoir.

4. Perform BEFORE EACH USE lubrication per
paragraph 4-2.

5. During operation, listen for abnormal sounds
which might indicate loose parts or other damage.

AFTER EACH USE

1. Clean all debris from machine, especially cylinder
rods and affixed safety decals. Replace any
missing or illegible decals.

2. Inspect loader for worn or damaged components.
Repair or replace before next use. Any replace­ment components installed during repair shall
include the components’ current safety decals
specified by the manufacturer to be affixed to the
component.

3. Store loader in a dry place.

To keep mounting kit hardware from loosening
during operation, periodically check that all
loader mounting kit hardware is torqued to
specifications noted in torque chart, Page 33. To

aid in mounting and dismounting loader, apply a
small amount of grease to areas shown in Figure 4-1.

CAUTION

USE A PIECE OF CARDBOARD OR
WOOD RATHER THAN HANDS AND
WEAR EYE PROTECTION WHEN
SEARCHING FOR HYDRAULIC LEAKS.
ESCAPING HYDRAULIC OIL UNDER
PRESSURE CAN PENETRATE SKIN. IF
OIL IS INJECTED INTO SKIN, IT MUST BE
SURGICALLY REMOVED WITHIN A FEW
HOURS BY A DOCTOR OR GANGRENE
MAY RESULT.

23

Figure 4-2 Lubrication Points

4-3 HYDRAULIC SYSTEM PRESSURE

REQUIREMENTS

A tractor hydraulic system pressure setting of 2500
psi is recommended for maximum efficiency and ser­vice. Do not exceed 3000 psi as this will damage

components possibly causing serious injury.

The Bush Hog control valve is pre-set at the factory
and should not be adjusted.

4-4 TROUBLESHOOTING

Troubleshooting procedures are listed in Table 4-1.
If the problem cannot be solved or replacement
parts are necessary, contact your authorized Bush
Hog dealer. Please have ready your machine name,
model number, serial number, purchase date and
exact cause or description of problem.

24

TABLE 4-1 TROUBLESHOOTING PROCEDURES
PROBLEM POSSIBLE CAUSE REMEDY

Loader slow and/or will not dump. Hydraulic oil viscosity too heavy. Change to proper oil.

Oil filter plugged. Clean or replace filter.
Hydraulic pump worn. Repair or replace pump.
Oil line restricted or leaking. Check all hoses and tubes for leaks,

damage or restrictions. Replace

damaged or restricted hoses or tube lines.
Quick couplers not properly connected. Check connection - Replace if necessary.
Control valve does not shift properly. Inspect clean, repair or replace valve.
Air in hydraulic system. Cycle lift cylinders and bucket cylinders

several times to free system of air.
Cylinder leaks internally. Replace seals.

Faulty valve. Repair or replace valve.

Loader chatters or vibrates when Air in hydraulic system. Cycle lift cylinders and bucket cylinders.
raising or lowering.

Oil leaks. Damaged fittings or hoses. Replace damaged parts.

Oil level too low. Add oil as required.

Loose connections. Tighten fittings.
Worn or damaged O-ring or Install a seal repair kit.

wiper seal in cylinder rod end.
Worn or damaged O-rings in Install an O-ring repair kit.

valve.

Insufficient lift capacity. Load is greater Check loader specifications.

than boom lift capacity. Check tractor system.
Internal boom cylinder leakage. Replace any worn parts and install a seal

Improper hydraulic valve Repair or replace valve.
operation.

Slow leakdown. Worn control valve. Have authorized Bush Hog dealer replace

Worn cylinder piston seals. Have authorized Bush Hog dealer replace

Excessive wear on bottom of bucket Float position not used while Use float position provided on valve.
and wear pads. operating loader.

Hydraulic cylinders inoperative. Hose from control valve improperly Refer to plumbing diagrams in Section V.

connected.

Pump operating continually on closed Hydraulic control valve relief stuck See your tractor manual for proper adjust­center tractor hydraulic system. open. ment or Bush Hog dealer for loader valve.

Hydraulic control valve relief set (3000 PSI is maximum pressure relief
too low. setting recommended)

Valve not correct for closed Install closed center plug on optional valve.
center operation

Loader lift and bucket tilt controls do not work Hoses improperly connected. Refer to plumbing diagrams in Section V
according to decal. and correct hose connections.

Valve noisy and/or hot. Open center control valve on Install closed center plug on optional valve.

closed center tractor.

repair kit.

seals.

seals.

Tractor loads/pump squeals. Closed center control valve on open Install open center plug on optional valve.

center tractor.

25

SECTION V

ASSEMBLY

CAUTION

THE FOLLOWING SAFETY PRECAUTIONS
SHOULD BE THOROUGHLY UNDER­STOOD BEFORE ATTEMPTING MACHINE
ASSEMBLY.

1. Do not lift heavy parts or assemblies. Use crane,
jack, tackle, fork trucks, or other mechanical
devices.

11.After completing assembly, be sure that all safe­ty locking devices or guards are in place.

12.Before operating the machine, thoroughly read
the operation section of this manual.

13.Before operating, read the maintenance section
of this manual to be sure that any parts requiring
lubrication such as gearboxes are full to avoid
any possible damage.

2 Select an area for assembly that is clean and

free of any debris which might cause persons
working on the assembly to trip.

3. Arrange parts to be assembled neatly in the work
area and have tools or other mechanical assist­ing devices in easy reach.

4. Inspect all parts and assemblies thoroughly and
remove any sharp edges, grease, oil, or dirt
which might cause pieces to slip when handling.

5. Preview the assembly instructions in your opera­tor’s manual before proceeding further.

6. If the assembly instructions call for parts or
assemblies to be blocked up, use only blocking
material that is in good condition and is capable
of handling the weight of the assembly to be
blocked. Also insure that the blocking material is
on a clean, dry surface.

7. Never put hands on any other part of body under
blocked up assemblies if at all possible.

8. Always wear goggles or safety glasses when
hammering, grinding or drilling metal parts.

14.Wear personal protective equipment such as,but
not limited to, protection for eyes, ears, feet,
hands, lungs and head when assembling the
equipment. Do not wear loose clothing or jewelry
that may catch on equipment moving parts.

BEFORE OPERATING THE EQUIPMENT, IF YOU
HAVE ANY QUESTIONS REGARDING THE
PROPER ASSEMBLY OR OPERATION, CON­TACT YOUR AUTHORIZED GREAT BEND DEAL­ER OR REPRESENTATIVE.

CAUTION

EQUIP YOUR TRACTOR WITH A ROPS CAB
OR FRAME FOR YOUR PROTECTION. SEE

YOUR TRACTOR/ROPS OPERATOR’S
M A N U AL FOR CORRECT SEAT BELT USAGE.

Read entire instructions before beginning to install
the loader. Personal injury and machine damage
may be prevented if you read and understand these
instructions and special safety messages.

Any reference to right or left are as if you were in the

tractor seat facing forward .

9. If the assembly calls for welding or cutting, be
sure that there are no flammable materials close
at hand and that bystanders have taken neces­sary precautions.

AFTER COMPLETING ANY ASSEMBLY
STEP,THOROUGHLY READ THE NEXT STEP IN
THE ASSEMBLY INSTRUCTIONS BEFORE PRO­CEEDING WITH THAT STEP.

10. After completing assembly, thoroughly inspect
the machine to be sure that all nuts, bolts,
hydraulic fittings or any other fastened assem­blies have been thoroughly tightened.

5-1 TRACTOR PREPARATION

Use front tires of equal size and maintain equal pres­sure in each tire. The pressure of the front tractor
tires must be increased to the maximum approved
pressure recommended by the tire manufacturer to
compensate for additional load placed on the tires
with the front end loader. Refer to your Tractor
Operator’s Manual. Adjust the front tires to the
widest recommended setting on adjustable models
for maximum stability. Front end weights must NOT
be used while loader is on the tractor. Pay particular
attention to “minimum tread settings” infromation in
Installation Instructions included with your Mounting
Kit.

26

5-2 TRACTOR BALLAST

CAUTION

TO HELP PREVENT ROLLOVER, USE REC­OMMENDED REAR TRACTOR BALLAST
AND WIDEST WHEEL SETTINGS TO MAXI­MIZE STABILITY. SEE YOUR TRACTOR
OPERATOR’S MANUAL FOR RECOMMEN­DATIONS.

Tractor weignt bracket may be left in place on cer­tain tractor models with loader mounted. Front trac­tor weights can only be used when the loader is
parked. Weights must be removed before remount­ing loader or serious damage will occur to loader or
tractor front axle due to excessive weight.

The use of adequate rear counterweight to counter­balance for maximum loader capacity is required for
safe loader operation. Weight added to the rear of
the tractor provides better traction and easier, more
efficient loader operation.

IMPORTANT
Do not exceed the maximum load capacity of the
tires on your tractor. Refer to the Tire and Wheel
Specifications in your Tractor Operator’s Manual
for more information.

IMPORTANT
This loader has both standard and metric fasten­ers. Verify that the proper fasteners are placed in
the correct locations. Do not tighten any bolts
firmly until all components are attached onto the
tractor.

Tighten all bolts equally during installation so that
outside surface of brackets are level and the center
line measurement from right to left hand mounting
brackets reads 39” plus or minus 1/4”. Figure 5-1.

Figure 5-1

39”

Bracket

Hole

Mounting

Bracket

IMPORTANT
To prevent mounting kit hardware from loosen­ing during operation, always torque mounting kit
hardware to specified torque noted in Loader
Operator’s Manual.

Remove all loader components from shipping pack­aging.

5-4 HYDRAULIC HOOKUP

5-3 INSTALLATION

WARNING

TO AVOID SERIOUS INJURY OR DEATH:
READ BEFORE CUTTING BANDS OR
REMOVING ATTACHING STRAPS. THE
LOADER MAY SHIFT DURING SHIPPING
AND HANDLING, MAKING IT UNSTABLE
ON THE PALLET. SUPPORT LOADER
WITH AN OVERHEAD HOIST OR OTHER
SUITABLE MEANS PRIOR TO REMOVING
BANDS OR ATTACHING STRAPS SECUR­ING LOADER TO PALLET. FAILURE TO
DO SO COULD RESULT IN ACCIDENTAL
TIP-OVER OF THE LOADER THAT COULD
CAUSE SERIOUS INJURY TO YOU
AND/OR BYSTANDERS.

Position the tractor on a hard level surface.
Install mounting brackets on tractor as shown in

Installation Instructions included with your Mounting
Kit. For ease of handling bracket, insert chain hook
into bracket hole. Using hoist, raise and tilt bracket
aligning mounting kit holes. Figure 5-1.

For use with tractor hydraulic valve, install hoses to
loader steel tubing. Install male quick couplers (cus­tomer furnished) to 1/2” male pipe ends of hoses.

Refer to individual instructions that come with the
various other valve and control options.

IMPORTANT
When properly installed, the tractor remote valve
or external valve control lever/levers will control
the loader hydraulic circuits as described in
Sections 3-4 - 3-9. Refer to tractor Operator’s
Manual for further explanation of tractor remote
control lever/levers.

5-5 BUCKET LEVEL INDICATOR ROD

With bucket flat on level surface, fasten “L” end of
indicator rod to hole in bucket quick attach with two
flat washers and cotter pins as shown in Figure 3-3
on page 15. Install guide bracket over top end of rod
as shown. Fasten the bracket to the main frame with
5/16 x 1-1/4” bolt and locknut. Before tightening,
ensure that the “kink” in the rod is centered in the
bracket slot. This will serve as a visual indication
that the bucket is in the level position.

27

5-6 FORK LIFT OPTION

Raise the positioning lock pins at the top of each
fork. Place fork in the middle of the frame over the
notch in the lower edge. Slide forks to desired posi-

tions and lower pins to lock forks in place.

Forks

Guard

Lock Pin

Mainframe

5-7 BALE SPEAR OPTION

Insert long spear into top of frame and fasten with
eccentric nut as shown. Tapered side of nut must be
against frame. Torque nut to 470 -505 ft./lbs. Insert
short spears into tubes at bottom of frame and tight­en lock bolts.

Frame Assembly

Long Spear

Short Spears

Eccentric Nut

Locking Bolt

28

5-8 OPTIONAL BUCKET ITEMS ASSEMBLY

SPILL GUARD ATTACHMENT

1/2 x 1-1/2” Bolt,

Lockwasher & Nut

DIGGING TEETH

SPILL GUARD

1. Place spill guard on bucket & center.

2. Mark hole centers for attaching fasteners. Allow
clearance for side cutting edges on bolts in side

plates if necessary.

3 . Remove spill guard and drill 9/16” holes. Install spill

guard and torque fasteners per Torque Specifications,
page 30.

9/16” Holes (7Places)

SIDE CUTTING EDGES

1/2 x 1” Bolt & Locknut

3/8 X 2-1/2” Bolt,
Lockwasher & Nut

TINE TEETH

Bushings

1/2 X 1-1/2” BOLT

3/8” U-BOLT

Lockwashers & Nuts

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Wrench
Size “A”

AMERICAN

Bolt Head Markings

SAE Grade 2

(No Dashes)

SAE Grade 5

(3 Dashes)

SAE Grade 8

(6 Dashes)

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)

METRIC

Wrench
Size “A”

*Use 75% of the specified torque value for plated
fasteners. Use 85% of the specified torque

values for lubricated fasteners.

8.8

Numbers appearing on bolt heads
indicate ASTM class.

Proper torque for metric fasteners used on Bush Hog 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)

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SAFETY DECALS

To promote safe operation, Great Bend supplies safety decals on all products manufactured. Because dam­ages can occur to safety decals either through shipment, use or reconditioning, Great Bend will, upon request,
provide safety decals for any of our products in the field at no charge. Contact your authorized Great Bend
dealer for more information.

Decals 50100231, 50100232, 50100233 and 50100234 are
located on the left side of the subframe.Decal 501002238 is
located on the lift cylinder. Other decals are located on
attachments (Bucket, Fork Lift, Bale Spear, etc.).

500100233

DECALS

50100238

50100231

50100232

50100234

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