Caterpillar cat 385 b excavator (prefix rcd) service repair manual (rcd00001 and up)

Service Repair Manual
Models
385B and 385B L Excavator

Shutdown SIS
Previous Screen
Product: EXCAVATOR
Model: 385B EXCAVATOR RCD
Configuration: 385B L Excavator RCD00001-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).
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385B L Excavator RCD00001-UP (MACHINE) POWERED BY 3456 Engine(SEBP3...
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https://127.0.0.1/sisweb/sisweb/techdoc/techdoc_print_page.jsp?returnurl=/sis...

2. Remove nut (3) and solenoid (4).
3. Remove bolt (5) and bracket assembly (6). Remove cartridge (7).
4. Remove O-ring seals (8) from cartridge (6).
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Oct 16 15:36:33 UTC+0800 2020
2/2
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Shutdown SIS
Previous Screen
Product: EXCAVATOR
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.
1. Install plugs and O-ring seals (80).
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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).
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).
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4. Install O-ring seals (66). Install plug (65) and the O-ring seal.
5. Position cover (64) and install bolts (63).
6. Assemble resolver valve (57). Install backup rings (59) and (60). Install O-ring seals (58),
(61), and (62).
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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.
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8. Install O-ring seal (51), spacers (52), spring (53), and valve (54) in body (55). Install plug
(50).
9. Install backup rings (45) and (48). Install O-ring seals (46), (47), and (49).
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10. Install differential valve (44). Tighten the differential valve to a torque of 235 ± 10 N·m
(173 ± 7 lb ft).
injury.
11. Assemble all of the solenoid assemblies. Install springs (40), (41), and (42). Install retainer
(43).
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12. Use Tooling (A) to install retaining ring (39).
13. Install O-ring seals (37) and (38).
14. Install valve (33), spring (34), O-ring seal (35), and solenoid (36).
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15. Install bolts (32).
16. Install pistons (29). Install plugs and O-ring seals (30). Install O-ring seals (28) and (31).
Install spacer (19).
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).
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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).
injury.
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19. Install backup rings (12) and (16). Install O-ring seals (13), (14), (15), (17), and (18).
Assemble line relief valves (10) and (11). Tighten nut (17A) to a torque of 80 ± 10 N·m
(59 ± 7 lb ft). Tighten nut (18A) to a torque of 33 ± 5 N·m (24 ± 4 lb ft).
20. Install line relief valve (11). Tighten the valves to a torque of 300 ± 40 N·m (220 ± 30 lb ft).
21. Install line relief valves (10). Tighten the valves to a torque of 300 ± 40 N·m
(220 ± 30 lb ft).
injury.
10/12
385B L Excavator RCD00001-UP (MACHINE) POWERED BY 3456 Engine(SEB...
2020/10/16

22. Assemble the flow compensator valves. Install springs (6), sleeves (7), springs (8), and
valves (9).
23. Install flow compensator valves (5).
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injury.
Copyright 1993 - 2020 Caterpillar Inc.
All Rights Reserved.
Private Network For SIS Licensees.
Fri Oct 16 15:37:30 UTC+0800 2020
12/12
2020/10/16

Shutdown SIS
Previous Screen
Product: EXCAVATOR
i01669933
Control Valve - Assemble - Right Travel, Left Travel, and
Stick
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.
1. Install plugs and O-ring seals (83).
1/12
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2. Install spools (80), (81), and (82). Install plugs and O-ring seals (79).
3. Assemble resolver valve (27). Install ball (74) in valve (27). Install seat (72). Install backup
rings (77) and (78). Install O-ring seals (73), (75), and (76).
Note: Reduce the temperature of seat (72) before inserting the seat into the bore of valve
(27).
2/12
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4. Assemble resolver valves (66). Install backup rings (70) and (71). Install O-ring seals (67),
(68), and (69).
5. Install resolver valves (66). Install plugs and O-ring seals (65).
6. Install O-ring seals (64). Install plug (63) and the O-ring seal.
3/12
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injury.
4/12
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8. Assemble differential relief valves. Install O-ring seal (56), spacers (57), spring (58), and
valve (59) into body (60). Install plug (55).
9. Install backup rings (50) and (53). Install O-ring seals (51), (52), and (54).
5/12
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10. Install differential valve (49). Tighten the differential valve to a torque of 235 ± 10 N·m
(173 ± 7 lb ft).
injury.
11. Assemble all of the solenoid assemblies. Install springs (45), (46), and (47). Install retainer
(48).
6/12
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12. Use Tooling (A) to install retaining ring (44).
14. Install valve (38), spring (39), O-ring seal (40), and solenoid (41).
7/12
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15. Install bolts (37).
16. Install pistons (35). Install plugs and O-ring seals (36). Install O-ring seals (33) and (34).
Install spacer (32).
17. Install spacer (32). Use a hoist and a lifting sling to position actuator group (31) and install
bolts (30). The weight of the actuator group is approximately 28 kg (60 lb). Position bracket
assembly (29) and install bolts (28).
8/12
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18. Use a hoist and a lifting sling to position actuator group (26) and install bolts (25). The
weight of the actuator group is approximately 28 kg (60 lb). Position bracket assembly (24)
and install bolts (23). Install resolver (27). Tighten the resolver to a torque of 50 ± 10 N·m
(37 ± 7 lb ft).
injury.
9/12
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19. Install backup rings (17) and (20). Install O-ring seals (16), (18), (19), (21), and (22).
Assemble line relief valves (10) and (11). Tighten nut (21A) to a torque of 80 ± 10 N·m
(59 ± 7 lb ft). Tighten nut (22A) to a torque of 33 ± 5 N·m (24 ± 4 lb ft).
20. Install line relief valve (15). Tighten the valve to a torque of 300 ± 40 N·m (220 ± 30 lb ft).
injury.
21. Assemble load check valves (5) and (6). Install boss (14) and spring (13) in valve (12).
10/12
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injury.
22. Assemble flow compensator valve (7). Install spring (8), sleeve (9), and spring (10) in valve
(11).
23. Install load check valves (5) and (6) and flow compensator valve (7).
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Caterpillar cat 385 b excavator (prefix rcd) service repair manual (rcd00001 and up)

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