TD-7C, TD-7E, TD-8C, TD-8E, 100C, 100E, 125C & 125E Crawlers

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International Harvester Service Manual TD-7C, TD-7E, TD-8C, TD-8E, 100C, 100E, 125C

WITHOUT THE AUTHORIZATION OF INTERNATIONAL HARVESTER OR IT S SUCCESSORS.

1 International Harvester Service Manual TD-7C, TD-7E, TD-8C, TD-8E, 100C, 100E, 125C & 125E Crawlers Service Manual 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. IH-S-TD7C+

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3 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

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

5 2 liiust.2 Model 100 SERIES E with Multi-Purpose Bucket (Model 100 SERIES C, Model 125 SERIES C and E Similar)

6 ELECTRICAL SYSTE M Section 2 Contents Paragraph 1. General Description 1 2. Precautions Service Diagnosis 2, 3 Wiring Diagrams. 4 to 31

7 COOLING SYSTEM Section 3 Contents Paragraph RADIATOR 1. Removal 1 to 3 2. Installation 3

1. REMOVAL COOLING SYSTEM RADIATOR Section 3 1 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.

8 1. REMOVAL COOLING SYSTEM RADIATOR Section 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.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.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. 3 Engine Coolant Drain Plug.

9 ENGINE Section 4 Contents Paragraph 1. Description 1 2. Removal 1 to 6 3. Installation 6,7 4. Engine Idle Adjustments 8,9

10 HYDRAULIC TORQUE CONVERTER Section 5 Contents Paragraph I II. 12. TORQUE CONVERTER Description Removal..... Disassembly.... Inspection and Repair Reassembly Installation.... Service Diagnosis TRANSMISSION AND CONVERTER SUPPLY PUMP Removal.... Disassembly.... Inspection and Repair Reassembly Installation...'.. 1 to 3 3,4 4 to 9 9, to , to to 21 21

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

11 HYDRAULIC TORQUE CONVERTER Illust. 1) when it is installed. Allow the assembly to dry for a period of not less than two hours prior to any operation. TORQUE CONVERTER Section 5 11 NOTE: Under no circumstances should the parts be assembled at temperatures less than60 0 F. 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). Illust.23 Instolling the Accessory Gear Inner Snap Ring. 1. Main housing. 2. Oil seal. 3. Inner snap ring groove. 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). 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)

12 TRANSMISSION (GEAR DRIVE) Section 6 Contents Paragraph II Description Removal. Disassembly 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 to 4 5 to 8 8 to to 26 26, ,30 30, , PRINTED IN UNITED STATES or AMERICA

13 TRANSMISSION (POWER SHIFT) Section 7 Contents Paragraph 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 to to to to 65 60,66 66 to to 72 73,74 74, to 79 79, ,82 82

TRANSMISSION (POWER SHIFT) Section 7 13 Illust.12 Removing Left Hand Foot Rest. liiust. 14 Disconnect Points Under Seat Cushion. 1. Diesel fuel lines. 2. steering valve-to-rear main frame hoses. 3.

14 TRANSMISSION (POWER SHIFT) Section 7 13 Illust.12 Removing Left Hand Foot Rest. liiust. 14 Disconnect Points Under Seat Cushion. 1. Diesel fuel lines. 2. steering valve-to-rear main frame hoses. 3. Transmission pump-topressure 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). II lust. 13 Removing Hydraulic Tube Guard. 1. Hydraulic tube guard. 2. Right hand foot rest. 8. Disconnect the accumulator hose at the manual shut-off valve on loaders equipped with a hydraulic accumulator. (Continued on next page)

15 STEERING SYSTEM Section 8 Contents Paragraph 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 to 4 4 to 12 12,13 13 to 23 23, , ,

16 SPROCKET DRIVE Section 9 Contents Paragraph 1. General Description CARRIER SHAFT AND SPROCKET DRIVE GEAR Removal and Disassembly. Inspection and Repair.... Reassembly and Installation PINION SHAFT Removal and Disassembly Inspection and Repair... Reassembly and Installation Service Diagnosis to 7 7,8 8 to ,16 16,17

17 TRACK AND TRACK FRJ'ME ASSEMBLY Section 10 Paragraph I II l 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 1 1 2,3 4 4 to 6 6,7 7 to to to to to ,29 29, , ,34 34,35 35, , , , to ,45 Contents

Section 10 16 a.installation -Continued TRACK AND TRACK FRAME ASSEMBLY 4. Place a block (2, must.

18 Section a.installation -Continued TRACK AND TRACK FRAME ASSEMBLY 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. TRACK CHAINS III ust. 14' Installing Bushing Spacer. 1. Bushing spacer. 2. Sealing washers in bore. 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). Illust. 15 Compressing the Sealing Washers with the Holding Tool.

19 Paragraph lia EQUIPMENT HYDRAULIC SYSTEM 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 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 2 to to , to to to to to 72 73, 74 74, , '79, , to to , , , 98 98, to 102 Section 11 Contents

Section 11 42 28.DISASSEMBLY -Continued EQUIPMENT HYDRAULIC SYSTEM 6. Remove the gear key from the drive shaft (Illust. 40). HYDRAULIC PUMP (DOUBLE ELEMENT) liiust.41 Removing the Center Housing 1.

20 Section DISASSEMBLY -Continued EQUIPMENT HYDRAULIC SYSTEM 6. Remove the gear key from the drive shaft (Illust. 40). HYDRAULIC PUMP (DOUBLE ELEMENT) liiust.41 Removing the Center Housing 1. Diaphragm. 2. Diaphragm seal. 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. 42 Removing the Thrust Plate 1. Idler shaft. 2. Drive shaft.

21 ADJUSTMENTS Section 12 Contents Paragraph 1. Engine Idle Adjustments 1,2 2. Belt Tension ,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

22 GEARMATIC WINCH ADAPTER Section 13 Contents Paragraph 1. Removal and Disassembly. 1 to 3 2. Reassembly and Installation 3

D6 Crawler S/n 37A1 & 44A1 & up

Caterpillar Service Manual D6 Crawler S/n 37A1 & 44A1 & up Service Manual THIS IS A MANUAL PRODUCED BY JENSALES INC. WITHOUT THE AUTHORIZATION OF CATERPILLAR OR IT S SUCCESSORS. CATERPILLAR AND IT S SUCCESSORS