IH-S-TD7C+
IInntteerr nnaattiioonnaallHHaarr vveesstteerr
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
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