D350E Series II Articulated Truck Caterpillar

Hoist Control Valve - Disassemble

Usage:

Disassembly Procedure

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Table 1
Required Tools
Tool	Part Number	Part Description	Qty
A	1P-0510	Driver Group	1

Start By:

Remove the hoist control valve. Refer to Disassembly and Assembly, "Hoist Control Valve - Remove". The information is in this manual.

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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, "Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Cat products. Dispose of all fluids according to local regulations and mandates.

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Illustration 1	g00472030

Loosen retaining nuts (1), (2), (4) and (5) in order to disconnect hydraulic pipes (6) and (7) from valve body (3). Remove the O-rings from the pipes. Note the location of hydraulic pipes (6) and (7) for assembly purposes. Remove hydraulic pipes (6) and (7) from valve body (3).
Remove the retainer clips from the hydraulic pipes.
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Illustration 2 g00577707
Remove two bolts (8) and remove actuator (9) from valve body (3).
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Illustration 3 g00472266
Remove two O-ring seals (10) from actuator (9). Remove the large O-ring seal from the center of actuator (9).
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Illustration 4 g00472121
Use Tooling (A) and a hydraulic press and exert downward pressure on retainer (12). Remove retainer ring (11) from actuator (9).
Slowly release the pressure from the hydraulic press and release the spring tension from springs (13), (14) and (15) that are in actuator (9).
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Illustration 5 g00472261
Remove retainer (12), spring (13), spring (14), spring (15), spacer (18), control spool (17) and spring (16) from actuator housing (9).
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Illustration 6 g00472371
Remove six plugs (19) from valve body (9). Remove O-ring seals (20) from plugs (19).
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Illustration 7 g00472374
Remove four bolts (21) and remove solenoid (22) from actuator housing (9).
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Illustration 8 g00472427
Remove two straps (23) from the wires. Remove O-ring seal (24) from solenoid (22).
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Illustration 9 g00480384
Remove wedge (27) from receptacle assembly (26). Remove two pins (28) from receptacle assembly (26).
Separate receptacle assembly (26) from wires (25).
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Illustration 10 g00573313
Remove two bolts (29) and remove actuator (30) from valve body (3).
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Illustration 11 g00480391
Remove two O-ring seals (31) from actuator (30). Remove the large O-ring seal from the center of actuator (30).
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Illustration 12 g00480395
Use Tooling (A) and a hydraulic press and exert downward pressure on retainer (33). Remove retainer ring (32) from actuator (30).
Slowly release the pressure from the hydraulic press and release the spring tension from springs (34), (35) and (36) that are in actuator (30).
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Illustration 13 g00480400
Remove retainer (33), spring (34), spring (35), spring (36), stop (39), stop (40), control spool (38) and spring (37) from actuator housing (30).
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Illustration 14 g00480403
Remove four bolts (42) and remove solenoid (41) from valve body (30). Remove six plugs and the O-ring seals from valve body (30).
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Illustration 15 g00480549
Remove O-ring seal (43) from solenoid (41).
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Illustration 16 g00480550
Remove wedge (46) from receptacle assembly (47). Remove two pins (48) from receptacle assembly (47).
Separate receptacle assembly (47) from wires (44). Remove two straps (45) from wires (44).
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Illustration 17 g00573211
Remove valve stem (49) from valve body (3). Note the orientation of valve stem (49) to valve body (3) for assembly purposes.
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Illustration 18 g00573212
Remove two bolts (50), the washers and manifold (51) from valve body (3).
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Illustration 19 g00480553
Remove O-ring seals (52) from valve body (3).
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Illustration 20 g00480556
Remove valve assembly (53) from valve body (3).
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Illustration 21 g00480588
Valve assembly (53) is disassembled in the following manner. Remove cap assembly (57) from valve body (60). Remove plate (56), pin (62), spring (61) and valve (55) from cap assembly (57) and from valve body (60).
Remove O-ring seals (54) and (59) from valve body (60). Remove O-ring seal (63) from cap assembly (57). Remove nut (58) and retainer (64) from cap (57).
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Illustration 22 g00497582

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Illustration 23 g00497580
Use Tooling (A) and a hydraulic press in order to remove seat (67), spring (66) and valve (65) from valve body (60).
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Illustration 24 g00580056
Remove valve assembly (68) and valve assembly (69) from valve body (3).
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Illustration 25 g00480609
Disassemble valve assembly (68) in the following manner. Remove retainer assembly (79), spring (75), plate (74) and valve (73) from valve assembly (72).
Remove nut (77), O-ring seal (76) and washer (78) from retainer assembly (79). Remove O-ring seal (71) and O-ring seal (70) from valve assembly (72).
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Illustration 26 g00497444
Disassemble valve assembly (69) in the following manner. Remove valve housing (81) from valve assembly (80).
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Illustration 27 g00497449
Remove retaining ring (87) from valve assembly (83). Remove valve assembly (83) from valve housing (84). Remove nut (82) and washer (86) from valve assembly (83). Remove O-ring seals (85) from valve housing (84) and from valve assembly (83).
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Illustration 28 g00497448
Remove O-ring seal (88) and O-ring seal (89) from valve body (81). Remove valve (90) from valve body (81).
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Illustration 29 g00480840
Remove plug (91), the spring, the valve and the O-ring seal from valve body (3). Remove two test ports (92), plug (93) and the O-ring seals from valve body (3). Remove the O-ring seal from plug (93).
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Illustration 30 g00497586
Remove valve (94), spring (95) and O-ring seal (96) from plug (91).
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Illustration 31 g00480983
Remove O-ring seals (98) from test ports (92). Remove caps (97) from test ports (92).