Caterpillar Cat 385B Excavator (Prefix MYA) Service Repair Manual Instant Download

Service Repair Manual Models 385BEXCAVATOR

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 1/12 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 385B EXCAVATOR MYA Configuration: 385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine Disassembly and Assembly 385B and 5090B Excavators Excavator Systems Media Number -RENR5407-06 Publication Date -01/02/2016 Date Updated -12/02/2016 i01668635 Control Valve - Disassemble - Right Travel, Left Travel, and Stick SMCS - 5051-015 Disassembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 1P-1862 Pliers 1 Note: Cleanliness is an important factor. Before you begin the disassembly procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism. Precision components can be damaged by contaminants or by dirt. Perform disassembly procedures on a clean work surface. Keep components covered and protected at all times. Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary. 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. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 2/12 Illustration 1 g00861921 1. Remove bolts (1) and cover (2). Illustration 2 g00853761 2. Remove O-ring seals (3) and (4). Illustration 3 g00862111 3. Remove load check valves (5) and (6) and flow compensator valve (7). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

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385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 3/12 Illustration 4 g00862129 4. Disassemble flow compensator valve (7). Remove spring (8), sleeve (9), and spring (10) from valve (11). Illustration 5 g00862158 5. Disassemble load check valves (5) and (6). Remove boss (14) and spring (13) from valve (12). Illustration 6 g00862180 6. Remove relief valve (15). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 4/12 Illustration 7 g00862192 7. Disassemble relief valve (15). Remove O-ring seals (16), (18), (19), (21), and (22). Remove backup rings (17) and (20). Note: Only the O-ring seals and the backup rings in the relief valves are serviceable. However, the line relief valves may be disassembled for cleaning. Illustration 8 g00862206 8. Use a hoist and a lifting sling to support actuator (26). Remove bolts (23) and bracket (24). Remove bolts (25) and actuator (26). The weight of the actuator is approximately 28 kg (60 lb). Remove resolver valve (27). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 5/12 Illustration 9 g00862251 9. Use a hoist and a lifting sling to support actuator (31). Remove bolts (28) and bracket (29). Remove bolts (30) and actuator (31). The weight of the actuator is approximately 28 kg (60 lb). Remove spacer (32). Illustration 10 g00862276 10. Disassemble spacer (32). Remove O-ring seals (33) and (34). Remove plugs and O-ring seals (36). Remove pistons (35). Illustration 11 g00862287 11. Remove bolts (37). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 6/12 Illustration 12 g00862297 12. Remove solenoid (41), O-ring seal (40), spring (39), and valve (38). Illustration 13 g00862301 13. Remove O-ring seals (42) and (43). Illustration 14 g00862376 14. Position the manifold in a press and apply slight pressure. Use Tooling (A) to remove retaining ring (44). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 7/12 Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force. Illustration 15 g00862378 15. Remove retainer (48) and springs (45), (46), and (47). Disassemble all of the solenoid assemblies. Illustration 16 g00862381 16. Remove differential valve (49). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 8/12 Illustration 17 g00862383 17. Remove O-ring seals (51), (52), and (54). Remove backup rings (50) and (53). Personal injury can result from being struck by parts propelled by a released spring force. Make sure to wear all necessary protective equipment. Follow the recommended procedure and use all recommended tooling to release the spring force. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 9/12 Illustration 18 g00862390 18. Disassemble differential relief valves. Remove plug (55), O-ring seal (56), spacers (57), spring (58), and valve (59) from body (60). Illustration 19 g00862397 19. Remove bolts (61) and cover (62). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP... 10/12 Illustration 20 g00862399 20. Remove plug (63) and the O-ring seal. Remove O-ring seals (64). Illustration 21 g00862404 21. Remove plugs and O-ring seals (65). Remove resolver valves (66). Illustration 22 g00862501 22. Disassemble resolver valves (66). Remove O-ring seals (67), (68), and (69), and backup rings (70) and (71). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP... 11/12 Illustration 23 g00862523 23. Disassemble resolver valve (27). Remove seat (72) and ball (74). Remove O-ring seals (73), (75), and (76). Remove backup rings (77) and (78). Illustration 24 g00862663 24. Remove plugs and O-ring seals (79). Remove spools (80), (81), and (82). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP... 12/12 Illustration 25 g00863333 25. Remove plugs and O-ring seals (83). Copyright 1993 - 2020 Caterpillar Inc. Sun Oct 18 08:18:16 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 1/2 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 385B EXCAVATOR MYA Configuration: 385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine Disassembly and Assembly 385B and 5090B Excavators Excavator Systems Media Number -RENR5407-06 Publication Date -01/02/2016 Date Updated -12/02/2016 i01674415 Control Valve - Disassemble - Proportional Valve SMCS - 5051-015 Disassembly Procedure Illustration 1 g00864935 1. Remove bolts (1) and valve group (2). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 2/2 Illustration 2 g00864942 2. Remove nut (3) and solenoid (4). Illustration 3 g00864965 3. Remove bolt (5) and bracket assembly (6). Remove cartridge (7). Illustration 4 g00864984 4. Remove O-ring seals (8) from cartridge (6). Copyright 1993 - 2020 Caterpillar Inc. Sun Oct 18 08:19:12 UTC+0800 2020 All Rights Reserved. Private Network For SIS Licensees. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 1/12 Shutdown SIS Previous Screen Product: EXCAVATOR Model: 385B EXCAVATOR MYA Configuration: 385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine Disassembly and Assembly 385B and 5090B Excavators Excavator Systems Media Number -RENR5407-06 Publication Date -01/02/2016 Date Updated -12/02/2016 i01659183 Control Valve - Assemble - Attachment, Bucket, and Boom SMCS - 5051-012 Assembly Procedure Table 1 Required Tools Tool Part Number Part Description Qty A 1P-1862 Pliers 1 Note: Check the O-ring seals, the gaskets, and the seals for wear or for damage. Replace the components, if necessary. Illustration 1 g00854185 1. Install plugs and O-ring seals (80). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 2/12 Illustration 2 g00854173 2. Assemble resolver (71). Install ball (73) in valve (74). Install seat (72). Install backup rings (76) and (79). Install O-ring seals (75), (77), and (78). Note: Reduce the temperature of seat (72) before inserting the seat into the bore of valve (74). Illustration 3 g00854162 3. Install resolver (71). Tighten the resolver to a torque of 50 10 N m (37 7 lb ft). Install stems (68), (69), and (70). Install plugs and O-ring seals (67). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 3/12 Illustration 4 g00854153 4. Install O-ring seals (66). Install plug (65) and the O-ring seal. Illustration 5 g00854149 5. Position cover (64) and install bolts (63). Illustration 6 g00854122 6. Assemble resolver valve (57). Install backup rings (59) and (60). Install O-ring seals (58), (61), and (62). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 4/12 Illustration 7 g00854098 7. Install plugs and O-ring seals (56). Install resolver valve (57). Tighten the resolver valve to a torque of 50 10 N m (37 7 lb ft). 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. https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 5/12 Illustration 8 g00854070 8. Install O-ring seal (51), spacers (52), spring (53), and valve (54) in body (55). Install plug (50). Illustration 9 g00854005 9. Install backup rings (45) and (48). Install O-ring seals (46), (47), and (49). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 6/12 Illustration 10 g00853986 10. Install differential valve (44). Tighten the differential valve to a torque of 235 10 N m (173 7 lb ft). 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. Illustration 11 g00853964 11. Assemble all of the solenoid assemblies. Install springs (40), (41), and (42). Install retainer (43). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 7/12 Illustration 12 g00853948 12. Use Tooling (A) to install retaining ring (39). Illustration 13 g00853913 13. Install O-ring seals (37) and (38). Illustration 14 g00853771 14. Install valve (33), spring (34), O-ring seal (35), and solenoid (36). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 8/12 Illustration 15 g00853770 15. Install bolts (32). Illustration 16 g00853768 16. Install pistons (29). Install plugs and O-ring seals (30). Install O-ring seals (28) and (31). Install spacer (19). Illustration 17 g00853767 17. Use a hoist and a lifting sling to position actuator group (26) and install bolts (27). The weight of the actuator group is approximately 28 kg (60 lb). Position bracket assembly (24) and install bolts (25). https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

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385B Excavator MYA00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP36... 9/12 Illustration 18 g00853766 18. Install spacer (19). Use a hoist and a lifting sling to position actuator group (23) and install bolts (21). The weight of the actuator group is approximately 28 kg (60 lb). Position bracket assembly (20) and install bolts (22). 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. Illustration 19 g00856084 https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis... 2020/10/18

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