IH-S-TD7C+

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Service ManualTD-7C, TD-7E, TD-8C,

TD-8E, 100C, 100E, 125C& 125E Crawlers

THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF INTERNATIONAL HARVESTER OR IT’S SUCCESSORS. INTERNATIONAL HARVESTER AND IT’S SUCCESSORS

ARE NOT RESPONSIBLE FOR THE QUALITY OR ACCURACY OF THIS MANUAL.

TRADE MARKS AND TRADE NAMES CONTAINED AND USED HEREIN ARE THOSE OF OTHERS, AND ARE USED HERE IN A DESCRIPTIVE SENSE TO REFER TO THE PRODUCTS OF OTHERS.

Serv

ice

Man

ual

, ,

INTERNATIONAL

MODEL 100, 125 SERIES C AND E LOADERS;

TD-7, TD-8 SERIES C AND E DOZERS

CHASSIS

INDEX

This manual is divided into major sections covering various components of the machines listed above. These sections are also indexed by title with thumb index tabs as shown below and to the right. To use this manual, grasp the right-hand side of book between thumb and fingers. Bend book back and find the pages containing the corresponding section index tab. Section identification is also contained in the upper corner of each page.

SECTION 1 - SPECIFICATIONS

2 - ELECTRICAL SYSTEM

3 - COOLING SYSTEM

4 - ENGINE

5 - HYDRAULIC TORQUE CONVERTER

6 - TRANSMISSION (GEAR DRIVE)

7 - TRANSMISSION (POWER SHIFT)

8 - STEERING SYSTEM

9 - SPROCKET DRIVE

10 - TRACK AND TRACK FRAME ASSEMBLY

11 - EQUIPMENT HYDRAULIC SYSTEM

12 - ADJUSTMENTS

13 - GEARMATIC WINCH ADAPTER

PRINl'ED IIt"UNlTED STATES OF AMERICA

Page 1

Illust. 1 TD-8 SERIES E Inside Arm Dozer with Ripper (TD-8 SERIES C, TD-7 SERIES C and E Similar)

Page 2

lIIust.2 Model 100 SERIES E with Multi-Purpose Bucket (Model 100 SERIES C, Model 125 SERIES C and E Similar)

PRINTED IN UNITED STATES OF AMERICA

ELECTRICAL SYSTE M Section 2

Contents Page

CONTENTS

Paragraph Page

1. General Description 1

2. Precautions • . . . . 1

3. Service Diagnosis 2, 3

Wiring Diagrams . 4 to 31

PRINTED IN UNITED STATES OF AMERICA

COOLING SYSTEM Section 3 Contents Page

CONTENTS

Paragraph Page

RADIATOR

1. Removal 1 to 3

2. Installation 3

PRINTED IN UNITED STATES OF AMERICA

COOLING SYSTEM Section 3

Page 1 RADIATOR

1. REMOVAL

1. LOADERS ONLY: Raise the bucket and install the safety bar (2, Illust. 1). Shut off the engine.

TD-7 AND TD-8 ONLY: Lower the blade to the ground. Shut off the engine.

Illust.l Preparation for Radiator and/or Engine Removal

(Loader Sl-town).

1. Exhaust pipe extension. 2. Safety bar (Loaders Only). 3. Weather cap. 4. Hood side door. 5. Radiator guard door. 6. Radiator mounting bracket. 7. Hood.

2. (Ref. Nos. Refer to Illust. 1): Remove the exhaust pipe extension or muffler (1), weather cap (3), hood side doors (4), hood (7) and radiator guard door (5).

3. Drain the cooling system by opening the radiator drain valve (2, Illust. 2) and removing

Illust.2 Radiator Drain Valve.

1. Oil cooler lower mounting. 2. Radiator drain valve. 3. Oil cooler. 4. Radiator.

the plug (Illust. 3) from the left hand side of the engine crankcase.

(Continued on next page)

Illust. 3 Engine Coolant Drain Plug.

ENGINE Section 4

Contents Page

CONTENTS

Paragraph Page

1. Description 1

2. Removal 1 to 6

3. Installation 6,7

4. Engine Idle Adjustments 8,9

PRINTED IN UNITED STATES OF AMERICA

HYDRAULIC TORQUE CONVERTER

Paragraph

I. 2. 3. 4. 5. 6. 7.

8. 9.

10. II. 12.

CONTENTS

TORQUE CONVERTER

Description . . . . . . Removal ..•.... Disassembly . . . . • Inspection and Repair Reassembly Installation . . . . Service Diagnosis

TRANSMISSION AND CONVERTER SUPPLY PUMP

Removal ...... . Disassembly . • . . . Inspection and Repair Reassembly Installation . . .' • . .

Page

1 to 3 3,4

4 to 9 9, 10

10 to 13 13

13,14

15 15 to 17

18 18 to 21

21

Section 5 Contents Page

PRINTED IN UNITED STATES OF AMERICA

HYDRAULIC TORQUE CONVERTER Section 5

TORQUE CONVERTER Page 11

Illust. 1) when it is installed. Allow the assembly to dry for a period of not less than two hours prior to any operation.

NOTE: Under no circumstances should the parts be assembled at temperatures less than600F.

5. Install a sealing ring (1, lllust. 21) around the pilot of the impeller and secure the im­peller to the drive housing. To hold the assembly from turning while tightening the mounting bolts, wrap a strap around the drive housing and hold against the edge of the bench with a bar (Illust. 22).

Jllust. 22 Securing the Impeller to the

Drive Housing.

1. Bar. 2. Wear sleeve.

6. Be sure the oil seal (2, Illust. 23) is installed in the bore of the main housing (1) so it is flush with the rear face. Block under the drive housing and install the main housing onto the impeller hub being careful not to damage the oil seal as it engages the wear sleeve (2, Illust. 22).

7. Install the accessaory gear inner snap ring into the lower groove (3) of the impeller hub spline (Illust. 23).

8. Install the accessory gear (2) on the impeller hub and secure with the outer snap ring (lllust. 14).

Illust.23 Instolling the Accessory Gear

Inner Snap Ring.

1. Main housing. 2. Oil seal.

3. Inner snap ring groove.

9. If the hubs (1 and 2, Illust. 9) were re­moved, pack the new hubs in dry ice or freeze to a temperature of -25°F for approximately 30 minutes prior to assembly. Be sure the gaskets are in position and press the hubs into the housing cover using a suitable driver on the hub shoulder. Two guide bolts (bolts longer than regular mounting bolts with heads cut-off) should be used to properly align the hubs in the cover bore.

10. Install the hook-type seal ring into the groove on the retainer hub (lllust. 10).

NOTE: If both pump drive assemblies were removed from the housing cover, they can both be assembled as described in the following steps.

11. Press the front ball bearing on the gear hub until it bottoms (1, Illust. 13). Install the internal snap ring into the groove of the hous­ing cover (Illust. 13).

(Continued on next page)

Paragraph

1. 2. 3. 4. 5. 6. 7.

8. 9.

10.

II. 12.

13.

14. 15. 16. 17. 18.

TRANSMISSION (GEAR DRIVE) Section 6

Description Removal .• Disassembly

CONTENTS

Inspection and Repair Reassembly .•.... Installation . . . . . • Checking Transmission Oil Pressure

HYDRAULIC SUPPLY PUMP

Removal ............. . Disassembly, Inspection and Repair

and Reassemb ly Installation ........•.

REGULATOR VALVE

Removal .••.•.....•. Disassembly, Inspection and Repair

and Reassembly Installation . . . • . . . . . . . . .

RANGE SELECTOR VALVE

Removal ..... . Disassembly· . . . . . Inspection and Repair Reassembly

. Installation . . . . . .

Contents Page

Page

1 to 4 5 to 8 8 to 20

20 20 to 26

26,27 28

29

29 29

29,30

30,31 31

31 31,32

32 33 33

PRINTED IN UNITED STATES or AMERICA

TRANSMISSION (POWER SHIFT)

Paragraph

1. 2. 3. 4. 5. 6. 7. 8.

9. 10.

11.

12. 13.

14.

15. 16. 17. 18. 19.

CONTENTS

General Description .. Removal ....... . Disassembly ...•. Inspection and Repair .. Reassembly . • . . . . • Installation . . . . . . . Checking Transmission Oil Pressure Service Diagnosis. . . . . . .

REGULATOR VALVE

Removal ........... . Disassembly, Inspection and Repair

and Reassembly . . . • . • . . . Installation . . . . . . . . . . . .

RANGE SELECTOR VALVE

Removal .....•.......•. Disassembly, Inspection and Repair

and Reassembly . . . . . . . . . . Installation. ........ .

PILOT CONTROL VALVE

Removal ........ . Disassembly •...•.. Inspection and Repair. Reassembly Installation . . . . . .

Page

1 to 11 11 to 15 16 to 51

51 51 to 65

60,66 66 to 69 69 to 72

73,74

74,75 75

75

76 76

77 to 79 79,80

81 81,82

82

Section 7 Contents Page

TRANSMISSION (POWER SHIFT)

Illust.12 Removing Left Hand Foot Rest.

II lust. 13 Removing Hydraulic Tube Guard.

1. Hydraulic tube guard. 2. Right hand foot rest.

Section 7 Page 13

lIIust. 14 Disconnect Points Under Seat Cushion.

1. Diesel fuel lines. 2. steering valve-to-rear main frame hoses. 3. Transmission pump-to-

pressure filter hose. 4. Pressure filter-to-regulator valve hose. 5. Transmission selector manifold hoses. 6. Seat front support. 7. steering valve-to-transmission

cover hose. 8. steering valve. 9. Hydraulic tube clamps.

10. Steering valve-to-regulator valve hose. 11. Hose clamp. 12. Hose straps. 13. Hydraulic cylinder crossover tubes.

6. Disconnect the hose (7, Illust. 14) at the transmission front cover.

7. Remove the crossover tube clamps (9, Hlust. 14).

8. Disconnect the accumulator hose at the manual shut-off valve on loaders equipped with a hydraulic accumulator.

(Continued on next page)

Paragraph

1. 2. 3. 4. 5.

6. 7.

8.

9. 10.

11.

STEERING SYSTEM

CONTENTS

STEERING PLANETARY

General Description .... Removal and Disassembly .• Inspection and Repair. . . . Reassembly and Installation Service Diagnosis ..•...

STEERING CYLINDER

Removal ••.•...•... Disassembly, Inspection and Repair

and Reassembly . . . • . . . . . . Installation . . . . . . . . . . . .

STEERING CONTROL VALVE

Removal ...•......... Disassembly, Inspection and Repair

and Reassembly . . Installation . . . . . . . . . • . . .

Page

1 to 4 4 to 12 12,13

13 to 23 23,24

24

24,25 25

25,26

26 26

Section 8 Contents Page

PRINTED IN UNITED STATES OF AMERICA

SPROCKET DRIVE

CONTENTS

Paragraph

1. General Description .......... .

CARRIER SHAFT AND SPROCKET DRIVE GEAR

2. 3. 4.

5. 6. 7.

8.

Removal and Disassembly . Inspection and Repair. . . . Reassembly and Installation

PINION SHAFT

Removal and Disassembly Inspection and Repair. . . Reassembly and Installation

Service Diagnosis. . . • . .

Page

1

1 to 7 7,8

8 to 14

14 15

15,16

16,17

Section 9 Contents Page

PRINTED IN UNITED STATES OF AMERICA

TRACK AND TRACK FRJ'ME ASSEMBLY Section 10

Paragraph

I. 2. 3.

4. 5. 6. 7. 8.

9. 10. II. 12. 13. 14.

15. 16. 17. 18.

19. 20. 21. 22.

23. 24. 25. 26. 27. 28.

29. 30. 3l. 32.

33. 34. 35. 36.

CONTENTS

General Description. Maintenance . . . . Service Diagnosis

TRACK CHAINS Description . . . . Maintenance ... . Removal ..... . Track Chain Repair Installation ....

FRONT IDLER

Description . . . . . Removal ....... . Disassembly. . . . . Inspection and Repair Reassembly . . . . . Installation .....

HYDRA ULIC TRACK ADJUSTER

Description . . . . . . . . . Removal and Disassembly Inspection and Repair . . . . Reassembly and Installation

TRACK IDLER

Description . . . . . . . . Removal and Disassembly Inspection and Repair . . . Reassembly and Installation

TRACK ROLLER Description . . . . . Removal ...... . Disassembly. . . . . Inspection and Repair Reassembly .... . Installation .... .

TRACK SPRING Description . . . . . Removal ...... . Inspection and Repair Installation .....

TRACK FRAME

Description Removal ........ . Installation ...... . Track Frame Alignment

Page

1 1

2,3

4 4 to 6

6,7 7 to 14

15 to 17

18 18 to 20 20 to 22

22 22 to 28

28

28,29 29,30

31 31,32

33 33,34 34,35 35,36

37 37

37,38 38

38,39 40

40 40,41

41 41

42 42 to 44

44 44,45

Contents Page

PRINTED IN UNITED STATES OF AMERICA

Section 10 TRACK AND TRACK FRAME ASSEMBLY Page 16

TRACK CHAINS

a.INSTALLATION -Continued

4. Place a block (2, must. 13) (8 to 10 inches high) under the first shoe, drive forward until the track links to be joined are approxi­mately one inch apart and install the two seal­ing washers (1, must. 13) in the counterbore of each link. The sealing washers must be installed with the concave side (hollow side) facing away from one another so their inside diameters are touching.

lIIust.13 Installing Sealing Washers.

1. Sealing washers. 2. Block.

Then insert the bushing spacer (1, must. 14) with the beveled edge facing out and secure in place with the holding tool (must. 11). To properly compress the sealing washers, tighten the bolt on each holding tool with the spacer flush with the face of the link (nlust. 15).

Move the tractor forward until the bushing spacers are held in place by the edges of the connecting link (nlust. 16). Then remove the holding tools, align the link holes and install the flattened forcing pin provided with the removing and installing tool (nlust. 17).

III ust. 14' Installing Bushing Spacer.

1. Bushing spacer. 2. Sealing washers in bore.

Illust. 15 Compressing the Sealing Washers with the Holding Tool.

PRINTED IN UNITED STATES OF AMERICA

EQUIPMENT HYDRAULIC SYSTEM

Paragraph

1

2 3 4 5 6

7 8 9

10 10 11 lIA 12 13

14 15

16

17 18

19

20 21 22

23

24 25

26

27 28 29 30 31

32 33 34 35 36 37 38 39 40

CONTENTS

General Description • • • • • • HYDRAULIC CYLINDER

Removal • • • • • 0

Disassembly • 0 • • • •

Inspection and Repair Reassembly • • • • • 0 •• • • •

Installation • • 0 0 • • • • • • • • • •

HYDRAULIC CONTROL VALVE Des cription . . . . . • . . . . . . . . Removal • • •••• D~assembly (Dozers) • • • • • Disassembly (Loaders) • • • • • • • 0 •

Inspection and Repair. • • • • • • • • • Reassembly (Dozers) • Reassembly (Loaders) Installation • • • • • • • Main Pressure Relief Valve Adjustment. •

DIVERTER VALVE (RIPPER) Removal 0 • • • • • • • CI 0 • • •

Disassembly, Inspection and Repair and Reassembly • • • • • • • • •

Installation • • •• ••• • • • • • • DIVERTER VALVE (BACKHOE)

Removal ..... . . . . . . . Disassembly, Inspection and Repair

and Reassembly. • • • • • 0 • • •

Ins talla tion • • • • • • • • • 0 • •

PRESSURE RE LIEF VALVE Des cription • • • • • • • • • • • Removal ........... . Disassembly, Inspection and Repair

and Reassembly • • • • • • • • Installation • • • • • • • • 0 0 • • • •

HYDRAULIC PUMP (SINGLE ELEMENT) Removal •••••••.•• 0 • •

Disassembly, Inspection and Repair and Reassembly • • • • • • • •

Installation • • • • • • 0 • 0 0 • • • •

HYDRAULIC PUMP (DOUBLE ELEMENT) Removal •••••• • • •• Disassembly. • • .' 0 0 • • • • •

Inspection and Repair. • • • • • • • 0 •

Reassembly • • • • • • . • • • • Installation • • . • • • • • •

ACCUMULATOR Description • • • • Removal •••.•• • • • • • • • • • Disassembly. • • • • • • • • • Inspection and Repair. Reassembly • • • • • Installation • • • • • • Charging the Accumulator Pump Test Procedure Service Diagnosis • • • • • • • •

Section 11 Contents Page

Page

2 to 7

7 7 7

7 to 10 10

11, 12 13 to 16 16 to 30 31 to 49

50 50 to 57 58 to 72 73, 74 74, 75

76

76 76, 77

78

'79, 80 81

82 82

83 84

85, 86

86 86

86 86 to 90

90 90 to 94

94

95 96

95, 96 96

96, 97 97

97, 98 98, 99

100 to 102 PRINTED IN UNITED STATES OF AMERICA

EQUIPMENT HYDRAULIC SYSTEM Section 11 Page 42

HYDRAULIC PUMP (DOUBLE ELEMENT)

28.DISASSEMBLY -Continued

6. Remove the gear key from the drive shaft (Illust. 40).

lIIust.40 Removing the Gear Key

7. Remove the center housing with diaphragm, gaskets and seals (Illust. 41). This housing can be disassembled later in the same manner as will be described for the front plate.

8. Lift off the thrust plate. Remove the two shafts from the remaining two pump sections (Illust. 42).

9. Remove the front gear housing with dowels (Illust. 43).

10. Remove the diaphragm from the front plate. Remove the spring (2) and tip the front plate to remove the ball that is under the spring (Illust. 44).

lIIust.41 Removing the Center Housing

1. Diaphragm. 2. Diaphragm seal.

lIIust. 42 Removing the Thrust Plate

1. Idler shaft. 2. Drive shaft. PRINTED IN UNITED STATES OF AMERICA

ADJUSTMENTS Section 12

Contents Page

CONTENTS

Paragraph Page

1. Engine Idle Adjustments 1,2

2. Belt Tension . . . . . . 2,3

3. Safety Start Switch (Power Shift Only) 3

4. Steering Clutches and Brakes 4

5. Model 19 Gearmatic Winch 4,5

6. Track Chain Tension . . . 6, 7

7. Carrying Frame Mounting 7,8

PRINTED IN UNITED STATES OF AMERICA

GEARMATIC WINCH ADAPTER Section 13

Contents Page

CONTENTS

Paragraph Page

1. Removal and Disassembly . 1 to 3

2. Reassembly and Installation 3

PRINTED IN UNITED STATES OF AMERICA