Caterpillar Cat D8L TRACK-TYPE TRACTOR Dozer Bulldozer (Prefix 7YB) Service Repair Manual Instant Download

Service Repair Manual Models D8L TRACK-TYPE TRACTOR

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 1/6 Shutdown SIS Previous Screen Product: TRACK-TYPE TRACTOR Model: D8L TRACK-TYPE TRACTOR 7YB Configuration: D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY 3408 ENGINE Disassembly and Assembly 3408E and 3412E Engines for Caterpillar Built Machines Media Number -RENR2336-06 Publication Date -01/08/2018 Date Updated -10/08/2018 i02396384 Unit Injector Hydraulic Pump - Disassemble SMCS - 1714-015 Disassembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A FT-2610 Driver Tube 1 B 4D-3120 Bolt 1 C FT-2612 Bearing Removal Tool 1 D 1P-1861 Retaining Ring Pliers 1 Start By: a. Remove the unit injector hydraulic pump. Refer to Disassembly and Assembly, "Unit Injector Hydraulic Pump - Remove". b. Remove the injection actuation pressure control valve. Refer to Disassembly and Assembly, "Injection Actuation Pressure Control Valve - Remove". NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 2/6 NOTICE Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component. Illustration 1 g01094410 1. Remove pressure compensator valve (1). 2. Remove manifold (2). 3. Remove bolts (4) from valve block (3). Illustration 2 g01094416 4. Remove valve block (3), control piston (6), and gasket (5). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

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D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 3/6 Illustration 3 g01094422 5. Remove rotating group (7). Minor twisting of the rotating group may be necessary in order to remove the rotating group. Illustration 4 g01094430 6. Install Tooling (A) in the pump group. Use a suitable press in order to remove shaft (8) from the front bearing. Illustration 5 g01094431 7. Remove bolts (9). Remove covers (10). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 4/6 Illustration 6 g01094441 8. Remove O-ring seal (12) from pintle bearing (14) that is opposite of spring seat (11). Install Tooling (B) into the pintle bearing finger tight. 9. Remove plug (13), if necessary. 10. Tighten Tooling (B) into the pintle bearing until the pintle bearing is removed. Illustration 7 g01094444 11. In order to remove the pintle bearing from the other side of the pump group, you need to hold yoke (15) firmly. Use Tooling (B) to remove the pintle bearing. 12. Remove yoke (15). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 5/6 Illustration 8 g01094447 Personal injury can result from parts and/or covers under spring pressure. Spring force will be released when covers are removed. Be prepared to hold spring loaded covers as the bolts are loosened. 13. Remove spring seat (11) and the spring. Illustration 9 g01094449 14. Use Tooling (D) to remove retaining ring (17). Remove bearing (16). Illustration 10 g01094450 15. Use Tooling (D) to remove retaining ring (19). Remove shaft seal (18). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 6/6 Illustration 11 g01094452 16. Use Tooling (C) and a suitable press in order to remove bearing (20). Illustration 12 g01094458 17. Remove plugs (21) and plug (22) from valve block (3). Copyright 1993 - 2020 Caterpillar Inc. Sat Jan 4 22:22:59 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 1/8 Shutdown SIS Previous Screen Product: TRACK-TYPE TRACTOR Model: D8L TRACK-TYPE TRACTOR 7YB Configuration: D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY 3408 ENGINE Disassembly and Assembly 3408E and 3412E Engines for Caterpillar Built Machines Media Number -RENR2336-06 Publication Date -01/08/2018 Date Updated -10/08/2018 i02396403 Unit Injector Hydraulic Pump - Assemble SMCS - 1714-016 Assembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty D 1P-1861 Retaining Ring Pliers 1 E FT-2608 Bearing Installation Tool 1 F FT-2609 Valve Block Positioner 1 G FT-2607 Bearing Installation Tool 2 H FT-2606 Yoke Fixture 1 J FT-2611 Bearing Support 1 NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. NOTICE https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 2/8 Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component. Illustration 1 g01094458 1. Install plugs (21) and plug (22) in valve block (3). Tighten plugs (21) to a torque of 10.0 0.2 N m (88.51 1.77 lb in). Tighten plug (22) to a torque of 12.25 0.15 N m (108 1 lb in). 2. Use Tooling (E), Tooling (F), and a suitable press in order to install the bearing in valve block (3). Illustration 2 g01094449 3. Install bearing (16). Use Tooling (D) to install retaining ring (17). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 3/8 Illustration 3 g01094447 Improper assembly of parts that are spring loaded can cause bodily injury. To prevent possible injury, follow the established assembly procedure and wear protective equipment. 4. Install spring seat (11) and the spring. Illustration 4 g01094444 5. Install yoke (15) inside the housing of the pump group. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 4/8 Illustration 5 g01096191 6. Install plug (13). Tighten the plug to a torque of 7.45 0.65 N m (65.938 5.753 lb in). 7. Use Tooling (G), Tooling (H), and a suitable press in order to install pintle bearing (14). The bearing that is located on the same side of the housing as spring seat (11) should be installed first. 8. Ensure that the outer race of pintle bearing (14) is started in the housing on the side opposite of the spring. 9. Lightly lubricate the yoke with clean engine oil. Ensure that the yoke is in the correct position. The bearings will hold the yoke in place when the bearings are installed. 10. Use Tooling (G) and a suitable press in order to install the second bearing in the housing. 11. Ensure that the yoke moves freely before you proceed with the assembly procedure. 12. Install O-ring seal (12). Illustration 6 g01094431 13. Install covers (10). 14. Install bolts (9). Tighten bolts (9) to a torque of 20 1 N m (15 1 lb ft). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 5/8 Illustration 7 g01196942 15. Use the coupling from the fuel transfer pump and Tooling (J) in order to install shaft (8) back into the proper position. Illustration 8 g01094422 16. Install rotating group (7) by using the following procedure. a. Position the housing so that the internal end of the shaft is angled downward. b. Slide rotating group (7) over the shaft and into the housing. Ensure that the shoes of rotating group (7) are against the yoke. Illustration 9 g01094836 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 6/8 c. Once the rotating group is installed, turn the rotating group in order to ensure that pins (23) are still in the special notches. If the rotating group jams, pins (23) need to be reinserted into the proper position. The pins in the rotating group are held in position with a C clip. See Illustration 9. Illustration 10 g01094416 17. Lightly lubricate the face of valve block (3) with clean engine oil. Position control piston (6) on the control shaft. 18. Install gasket (5). Illustration 11 g01094839 19. Install valve block (3) by using the following procedure. a. Place a finger over large middle hole (24) on the mounting surface of valve block (3) in order to create a vacuum. This will hold the control piston in place while you install valve block (3). b. Ensure that the housing gasket is not damaged. Align valve block (3) with the pins that are in the housing of the pump group. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 7/8 Illustration 12 g01094410 20. Start bolts (4) in valve block (3) by hand. 21. Tighten bolts (4) by alternating from all four sides. Tighten the bolts in the corners first. Tighten the bolts to a torque of 28 3 N m (20 2 lb ft). 22. Install manifold (2). 23. Install pressure compensator valve (1). Illustration 13 g01094450 24. Install shaft seal (18) by using the following procedure. a. Lightly lubricate the shaft seal with clean engine oil. b. Use Tooling (E) to lower shaft seal (18) below the edge of the bore. c. Position retaining ring (19) against the shaft seal below the edge of the bore. d. Use Tooling (E) in order to lower shaft seal (18) and retaining ring (19). Lower the retaining ring until the retaining ring expands into position. End By: a. Install the injection actuation pressure control valve. Refer to Disassembly and Assembly, "Injection Actuation Pressure Control Valve - Install". https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 8/8 b. Install the unit injector hydraulic pump. Refer to Disassembly and Assembly, "Unit Injector Hydraulic Pump - Install". Copyright 1993 - 2020 Caterpillar Inc. Sat Jan 4 22:23:58 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 1/4 Shutdown SIS Previous Screen Product: TRACK-TYPE TRACTOR Model: D8L TRACK-TYPE TRACTOR 7YB Configuration: D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY 3408 ENGINE Disassembly and Assembly 3408E and 3412E Engines for Caterpillar Built Machines Media Number -RENR2336-06 Publication Date -01/08/2018 Date Updated -10/08/2018 i01363607 Unit Injector Hydraulic Pump - Install SMCS - 1714-012 Installation Procedure NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. NOTICE Do not allow dirt to enter the fuel system. Thoroughly clean the area around a fuel system component that will be disconnected. Fit a suitable cover over disconnected fuel system component. Note: The aftercooler has been removed for photographic purposes only. Note: Check the condition of the O-rings. If the O-rings are worn or damaged, use new parts for replacement. 1. Install the O-ring on the unit injector hydraulic pump that seals against the unit injector hydraulic pump drive. Lightly lubricate the seal with clean engine oil. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 2/4 Illustration 1 g00553109 Typical example 2. Attach a strap and a suitable lifting device to unit injector hydraulic pump (14), as shown. The weight of the unit injector hydraulic pump is approximately 30 kg (66 lb). Illustration 2 g00553111 Typical example 3. Install two bolts (15) and the washers. Illustration 3 g00553076 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 3/4 Typical example 4. Install three bolts (13) and the washers. Illustration 4 g00553074 5. Connect injection actuation pressure sensor (10), engine oil temperature sensor connector (11), and the connector for engine oil pressure sensor (12). Illustration 5 g00553073 Typical example 6. Install two wire ties (8) and (9). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 4/4 Illustration 6 g00553072 Typical example Note: The unit injector hydraulic pump must be primed before inlet tube assembly (3) is installed. Pour 0.95 L (1.00 qt) of clean engine oil directly in the inlet of the unit injector hydraulic pump before tube (3) is installed. 7. Install the O-ring seals in tube assembly (3). Lightly lubricate the O-ring seals with clean engine oil. Install tube assembly (3). 8. Position clamp (4) and install bolt (5), the nut, and the washer. 9. Place clamp (7) in position and install bolt (6), the nut and the spacer. Illustration 7 g00553070 Typical example 10. Install the O-ring seals in hose assemblies (1) and (2). Lightly lubricate the seals with clean engine oil. Connect hose assemblies (1) and (2). 11. Tighten hose assemblies (1). 12. Tighten hose assemblies (2) to 125 15 N m (92 11 lb ft). Copyright 1993 - 2020 Caterpillar Inc. Sat Jan 4 22:24:57 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

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D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY ... 1/4 Shutdown SIS Previous Screen Product: TRACK-TYPE TRACTOR Model: D8L TRACK-TYPE TRACTOR 7YB Configuration: D8L TRACTOR / POWER SHIFT / 7YB00001-01572 (MACHINE) POWERED BY 3408 ENGINE Disassembly and Assembly 3408E and 3412E Engines for Caterpillar Built Machines Media Number -RENR2336-06 Publication Date -01/08/2018 Date Updated -10/08/2018 i01363680 Unit Injector Hydraulic Pump Drive - Remove SMCS - 1714-011-PD Removal Procedure Start By: a. Remove the unit injector hydraulic pump. Refer to Disassembly and Assembly, "Unit Injector Hydraulic Pump - Remove". b. Remove the front cover. Refer to Disassembly and Assembly, "Front Cover - Remove". NOTICE Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. NOTICE Care must be taken to ensure that fluids are contained during performance of inspection, maintenance, testing, adjusting and repair of the product. Be prepared to collect the fluid with suitable containers before opening any compartment or disassembling any component containing fluids. Refer to Special Publication, NENG2500, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/1/4

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