Caterpillar Cat 120H Motor Grader (Prefix CAF) Service Repair Manual Instant Download

Service Repair Manual Models 120H M otor Grader

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 1/16 Shutdown SIS Previous Screen Product: MOTOR GRADER Model: 120H MOTOR GRADER CAF Configuration: 120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine Disassembly and Assembly 120H and 135H Motor Graders Machine Systems Media Number -RENR4164-01 Publication Date -01/04/2005 Date Updated -30/04/2005 i07430989 Piston Pump (Hydraulic and Steering) - Assemble SMCS - 4306-016; 5070-016 Assembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty B 1P-1861 Retaining Ring Pliers 1 D 1P-0510 Driver Group 1 E 8T-5096 Dial Indicator Group 1 Loctite LB 8632 Silicone Lubricant (1) - - - Loctite LB 8104 Silicone Lubricant (2) - F Loctite LB 8801 Silicone Lubricant (3) - - Loctite LB Superlube (4) - - G - Loctite 243 - (1)North America (2)EAME (3)Asia Pacific Division (4)South America Note: The axial end play must be adjusted if the swashplate, the swashplate bearings, the shaft, the shaft bearings, the head, or the housing has been replaced. 1. During the assembly of the piston pump, check the condition of all the O-ring seals and the lip seals that are used in the pump. If any of these seals are damaged, use new parts for replacement. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 2/16 Illustration 1 g00991054 2. Lower the temperature of bearing cup (40). Use Tooling (D) to install bearing cup (40) in head (31). Install bearing cup (40) until the bearing cup is seated. Illustration 2 g00990468 Illustration 3 g00990696 3. Lower the temperature of bearing cup (66). Use Tooling (D) to install bearing cup (66) in housing (26). Install bearing cup (66) until the bearing cup is seated. 4. Install bearing (58) in housing (26). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

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120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 3/16 5. Install bearing (63) and bearing (64) into housing (26). Install set screws (65). Illustration 4 g00990391 6. Use Tooling (D) to install lip seal (62) in housing (26) until the lip seal is seated. The sealing lip must face inward. Lubricate the sealing lip lightly with hydraulic oil before installation. Use Tooling (B) to install retaining ring (61) into housing (26). Illustration 5 g00990390 7. Install shield (60) into housing (26). Illustration 6 g00990696 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 4/16 Illustration 7 g00990376 8. Place a light coat of hydraulic oil on bearing (64) and bearing (65). The hydraulic oil will hold swashplate (54) in position during the following steps. Install swashplate (44) into housing (26). Swashplate (44) should fit into bearing (64) and bearing (65). Illustration 8 g00990697 9. Place housing (26) onto support blocks to allow space for installation of shaft (59). Shaft (59) extends beyond the end of housing (26). Install shaft (59) through swashplate (44), through bearing (58) (not shown), and through housing (26). 10. Install plug (48) into housing (26). Install the O-ring seal into housing (26). Illustration 9 g00990382 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 5/16 11. Install spacer (55), spring (56), and spacer (57) into barrel (52). Illustration 10 g00990700 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. 12. Use Tooling (D) and use a suitable press to compress spring (56). 13. Use Tooling (B) to install retaining ring (54) into barrel (52). Note: Set bearing preload before you install the rotating group. The bearing preload should be 0.010 mm (0.0004 inch) to 0.100 mm (0.0039 inch). Illustration 11 g00990702 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 6/16 14. Do not install shim (41). Install bearing cone (42) onto shaft (59). Assemble the pump without shim (41) to check the preload of bearing cone (42). Illustration 12 g00990368 15. Install the head (31) on housing (26). Install bolts (33). Illustration 13 g00990706 Typical example https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 7/16 Illustration 14 g00990708 Typical example 16. Install Tooling (E) onto the pump housing. Use the dial indicator to determine the end play of shaft (59). Be sure that you move shaft (59) completely in both directions. Use appropriate tools to move shaft (59). 17. Subtract desired shaft bearing end play of 0.010 mm (0.0004 inch) to 0.100 mm (0.0039 inch) from the dial indicator reading. This is the thickness of shims (50). Illustration 15 g00990368 18. Remove bolts (33), head (31), and the bearing. Illustration 16 g00990379 19. Install pistons (51) into the original locations in spacer (53) and barrel (52). For best results, place the barrel in an upright position. Insert the pistons into spacer (53). Lift the pistons with spacer (53) and insert pistons (51) into barrel (52). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 8/16 Illustration 17 g00990378 20. Position housing (26) horizontally. Install rotating group (49) and install shim kit (50) onto shaft (59). Illustration 18 g00990712 21. Install shims (41) and install bearing cone (42) onto shaft (59). Illustration 19 g00990376 22. Position two spacers (45) and two locking plates (46) to the original positions on swashplate (44). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 9/16 23. Apply Tooling (G) on bolts (47). Install bolts (47) to hold locking plates (46) and spacers (45) to swashplate (44). Illustration 20 g00990371 24. Install pin (39) in head (31). 25. Apply Tooling (G) to piston rods (34) and (37). 26. Install piston rod (34) and piston rod (37) in head (31). Illustration 21 g00990369 27. Install spring (37), piston (35), and piston (38) onto head (31): https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(S... 10/16 Illustration 22 g00990715 28. Use a light coat of Tooling (F) to hold plate (43) to head (31) during assembly. 29. Position head (31) onto housing (26) and bearing (42). Illustration 23 g00990368 30. Install bolts (33) to hold head (31) to housing (26). 31. Install plug (30) in head (31). Install the O-ring seal in head (31). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(S... 11/16 Illustration 24 g00990366 32. Install O-ring seal (29) to housing (26). Illustration 25 g00990520 33. Install cover (28) and install bolts (27) to housing (26). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(S... 12/16 Illustration 26 g00990339 34. Install spool (25), guide (24), spring (23), and guide (22) to valve (2). 35. Install spool (21), guide (20), pin (19), spring (18), and guide (17) to valve (2). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(S... 13/16 Illustration 27 g00990325 Sudden release of spring force can cause injury. To prevent the possibility of injury, follow the procedure to relieve the spring pressure. 36. Install O-ring seal (16) to plug (15). 37. Install plug (15) to valve (2). 38. Install O-ring seal (14) to plug (13). 39. Install plug (13) to valve (2). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(S... 14/16 Illustration 28 g00990306 40. Install O-ring seal (12) to plug (11). 41. Install plug (11) to valve (2). 42. Install O-ring seal (10) to plug (9). 43. Install plug (9) to valve (2). 44. Install O-ring seal (8) to plug (7). 45. Install plug (7) to valve (2). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(S... 15/16 Illustration 29 g00990315 46. Install needle valve (6), ring (5), and O-ring seal (4) to valve (2). 47. Install plug (3) to valve (2). Illustration 30 g00834347 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(S... 16/16 48. Install valve group (2) and install bolts (1) to the pump. End By: a. Install the piston pump (hydraulic and steering). Refer to Disassembly and Assembly, "Piston Pump (Hydraulic and Steering) - Install" for the correct procedure. Copyright 1993 - 2020 Caterpillar Inc. Mon Mar 2 00:47:00 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... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 1/4 Shutdown SIS Previous Screen Product: MOTOR GRADER Model: 120H MOTOR GRADER CAF Configuration: 120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine Disassembly and Assembly 120H and 135H Motor Graders Machine Systems Media Number -RENR4164-01 Publication Date -01/04/2005 Date Updated -30/04/2005 i04685309 Piston Pump (Hydraulic and Steering) - Install SMCS - 4306-012; 5070-012 Installation Procedure Table 1 Required Tools Tool Part Number Part Description Qty 183-4797 Track Roller Lifting Fork 1 A FT-2930 Extension 1 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 2/4 Illustration 1 g01012620 1. Attach Tooling (A) to a suitable lifting device. Position Tooling (A) under implement pump (3) . The weight of implement pump (3) is approximately 73 kg (160 lb). 2. Install implement pump (3) . Illustration 2 g02797831 3. Install bracket (7) . 4. Install bolts (6) . Tighten bolts (6) to a torque of 160 30 N m (118 22 lb ft). 5. Install yoke (5) , nut (4) , and the washer. Tighten nut (4) to a torque of 190 25 N m (140 18 lb ft). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 3/4 Illustration 3 g01012616 6. Connect hose assembly (2) . Illustration 4 g01012617 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sisw... 2020/3/2

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120H Motor Grader CAF00001-UP (MACHINE) POWERED BY 3126B Engine(SEB... 4/4 7. Connect fitting assembly (1) . End By: Install the fan drive pump. Refer to Disassembly and Assembly, "Fan Drive Pump - Install". Copyright 1993 - 2020 Caterpillar Inc. Mon Mar 2 00:47:56 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... 2020/3/2

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