New Holland TT45A Betriebsanleitung

87655301 3/07

1st Printing

Printed In U.S.A.

TT45A, TT50A

REPAIR MANUAL

COMPLETE CONTENTS

SECTION 00 - GENERAL 2............................................

SECTION 10 - ENGINE 3..............................................

SECTION 18 - CLUTCHES 10...........................................

SECTION 21 - TRANSMISSION SYSTEM 11..............................

SECTION 27 - MECHANICAL REAR WHEEL DRIVE 13....................

SECTION 31 - POWER TAKE-OFF 15....................................

SECTION 33 - BRAKING SYSTEM 16....................................

SECTION 35 - HYDRAULIC SYSTEM 16..................................

SECTION 41 - STEERING SYSTEMS 19..................................

SECTION 44 - FRONT AXLE 20.........................................

SECTION 55 - ELECTRICAL SYSTEM 21.................................

SECTION 90 - BODYWORK 27..........................................

The following pages are the collation of the contents pages from each section and

chapter of the TT45A, TT50A Repair manual. Complete Repair part # 87655297.

The sections used through out all New Holland product Repair manuals may not be

used for each product. Each Repair manual will be made up of one or several books.

Each book will be labeled as to which sections are in the overall Repair manual and

which sections are in each book.

The sections listed above are the sections utilized for the TT45A, TT50A Tractors.

SECTION 10 -- ENGINE -- CHAPTER 1

10-25

86071893

SEPARATING THE TRACTOR AT THE

CLUTCH HOUSING/ENGINE –

8x2TRANSMISSION

Disassembly

1. Disconnect the negative (--) battery cable, and

the positive (+) battery cable from the battery, 1.

2. Disconnect the headlight wiring harness, 2, and

remove the hood, 3.

3. If equipped, remove the remote loader control

valve, and all the connecting hydraulic tubes

from the right side loader tower.

4. Remove the LH and RH engine side covers, 4.

5. Remove the LH, RH and center rear hood

panels, 5.

6. Remove the steering wheel, 6.

7. Remove the instrument panel, 7, from the dash

housing. Disconnect all electrical connectors

from the instrument panel.

8. Remove the dash housing, 8, from the firewall.

Disconnect all electrical connectors from the

dash housing.

9. Disconnect electrical harness to the starter, 9.

SECTION 10 -- ENGINE -- CHAPTER 1

10-26

86071894

10 13

10. Disconnect and remove the throttle cable from

the dash mounted throttle control lever, 10.

11. Disconnect and remove the throttle cable from

the foot control pedal, 11.

12. Drain fuel from fuel tank, 12, into a suitable

container. Remove fuel tank from firewall.

13. Remove the firewall, 13, from the tractor.

14. Disconnect all hydraulic tubes 14, to the

hydraulic pump, 15.

SECTION 10 -- ENGINE -- CHAPTER 1

10-27

15. Attach a chain sling to the two hoist eyes, 1.

16. Attach a suitable hoist to the chain sling.

NOTE: The hoist is used for supporting the engine

and axle assembly, not necessarily for lifting.

17. Roll a floor jack under the rear of the tractor, and

place under the clutch housing. Raise the jack

enough to support the drive train.

86071896

18. Remove the buckle-up bolts, 1, and starter, 2,

that secure the engine, 3, to the clutch housing,

NOTE: The hoist and/or floor jack may need to be

raised or lowered to allow for separation of the

engine and clutch housing.

19. Carefully roll the drive train away from the

engine, using the floor jack for support.

86071895

SECTION 10 -- ENGINE -- CHAPTER 1

10-28

SEPARATING THE TRACTOR AT THE

ENGINE/FRAME

Removal

1. Use jack stands under the frame rails to support

the front frame/engine assembly.

WARNING

Make sure the front frame/engine assembly is

securely supported before removing the engine.

2. Remove the chain sling from the two hoist eyes

on the engine.

3. Drain the hydraulic fluid from the power steering

reservoir, 1, into a suitable container. Remove

the reservoir, 1, and mounting bracket from the

engine.

86061281

4. Remove the air cleaner assembly, 1, from the

tractor.

5. Remove the muffler and tailpipe assembly, 2,

from engine.

6. Loosen the lower radiator hose, 3, and drain the

coolant into a suitable container.

7. Remove the lower, 3, and upper, 4, radiator

hoses.

8. Remove the radiator, 5, from the tractor.

86071897

SECTION 10 -- ENGINE -- CHAPTER 1

10-29

9. Attach a chain sling to the two hoist eyes, 1.

10. Attach a suitable hoist to the chain sling, and

raise the engine enough to support the engine.

86071896

11. Loosen and remove the engine mounting bolts,

1, on both sides of the frame.

12. Carefully lift the engine from the frame.

13. Attach the engine to a suitable engine stand.

14. With the engine securely attached to the engine

stand, remove the chain sling from the two

engine hoist eyes.

86071898

Installation

1. Attach a chain sling to the two hoist eyes.

2. Attach a suitable hoist to the chain sling, and

raise the engine enough to support the engine.

3. Remove the engine from the engine stand.

4. Using a hoist, position the engine in the frame,

aligning the mounting holes in the frame with the

mounting holes in the engine.

5. Install the engine mounting bolts, 1, on both sides

of the frame. Tighten the mounting bolts to 139 –

175 N⋅m (102 – 129 ft-lb).

6. With the engine securely installed into the frame,

remove the chain sling from the two engine hoist

eyes.

86071898

SECTION 10 -- ENGINE -- CHAPTER 1

10-30

7. Reinstall the radiator, 1, into the tractor.

8. Reinstall the lower, 2, and upper, 3, radiator

hoses.

9. 9. Fill the radiator, 1, with new coolant to the

proper level.

10. Reinstall the muffler and exhaust pipe, 4, onto

the exhaust manifold.

11. Reinstall the air cleaner assembly, 5, onto the

engine.

86071897

12. Reinstall the power steering reservoir and

mounting bracket, 1, onto the engine. Reconnect

the hydraulic lines to the reservoir.

13. Refill the reservoir to the proper level with Ambra

Multi G 134.

86061281

ATTACHING THE TRACTOR AT THE

CLUTCH HOUSING/ENGINE --

8x2TRANSMISSION

Assembly

WARNING

Do not use the buckle-up bolts to draw the drive

train together with the engine. Severe damage to

the drive train may result.

1. Attach a chain sling to the two hoist eyes, 1.

2. Attach a suitable hoist to the chain sling.

3. Carefully roll the drive train into alignment with

the engine. Align the splines on the 8 x 2 input

shaft with the clutch and the engine flywheel.

Rotate the engine fan to align the input shaft and

the clutch/flywheel. The floor jack or hoist may be

needed to raise or lower the engine to make

alignment possible.

86071896

SECTION 10 -- ENGINE -- CHAPTER 1

10-31

4. Connect the clutch housing, 1, to the engine, 2,

and install the bucket-up bolts, 3.

5. Reinstall the starter, 4, and secure with the

retaining nuts. Connect the wiring harness, 5, to

the starter.

6. Tighten the buckle-up bolts, 3, in a criss--cross

pattern. Torque the M10 bolts and nuts to 68 N⋅m

(50 ft-lb) Torque the two M12 bolts to 81 N⋅m(60

ft-lb).

7. Remove the chain hoist and sling from the engine

hoist eyes. Remove the floor jack from under the

tractor. 86071895

SECTION 10 -- ENGINE -- CHAPTER 1

10-32

86071894

8. Reconnect all hydraulic tubes, 1, to the hydraulic

pump, 2.

9. Reattach the firewall, 3, to the tractor.

10. Reattach the fuel tank, 4, to the firewall.

Reconnect fuel lines to the fuel shut--off valve

and tank vent.

11. Reattach the throttle cable to the foot control

pedal, 5.

12. Reattach the throttle cable to the dash mounted

throttle control lever, 6.

Thank you very much

for your reading.

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