D250E Series II and D300E Series II Articulated Trucks Machine Systems Caterpillar

Hoist Control Valve - Remove

Usage:

Removal Procedure

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At operating temperature, the hydraulic tank is hot and under pressure.
Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin.

Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure.

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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.

Put identification marks on all lines, hoses, wires, and tubes for installation purposes. Plug all lines, hoses and tubes. This helps prevent fluid loss and contamination of the oil system.
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Illustration 1 g00465133
Remove two bolts (1) that secure cover (2) to the machine frame. Loosen two bolts (3) and the nuts that secure cover (2) to the machine frame.
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Illustration 2 g00465135
Loosen hose clamp (4) from hose (5). Remove hose (5) from hose bundle (6).
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Illustration 3 g00465138
Remove cover (2) from the machine frame. Slot (7) in cover (2) is positioned over bolt (3). Cover (2) positions in front of spacer (8). The right side of the cover is symmetrical to the left side.
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Illustration 4 g00465137
Remove four bolts (10) and two half clamps (11) in order to disconnect hydraulic pipe (9) from valve (14). Remove the O-ring seals from the hydraulic pipe.
Disconnect hydraulic hoses (12) and (13) from valve (14). Remove the O-ring seals from the hydraulic hoses.
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Illustration 5 g00465139
Remove plug assembly (15), the spring and the valve from valve (14). Remove two test ports (16) from valve (14). Drain the fluid from valve (14) into an appropriate container (17). Install plug assembly (15), the spring , the valve and two test ports (16) in valve (14).
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Illustration 6 g00465140
Remove four bolts (18) and two half clamps (22) in order to disconnect hydraulic hose (19) and flange (23) from valve (14). Remove the O-ring seal from the hydraulic hose.
Remove four bolts (24) and two half clamps (21) in order to disconnect hydraulic hose (20) from valve (14). Remove the O-ring seal from the hydraulic hose. Move hydraulic hoses (19) and (20) aside.
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Illustration 7 g00466093
Move flange (23) and hose (25) aside. Remove four bolts (26) and two half clamps (28) in order to disconnect hydraulic pipe (27) from valve (14). Remove the O-ring seal from the hydraulic pipe. Remove the O-ring seal from flange (23).
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Illustration 8 g00465141
Disconnect electrical connectors (29) and (30). Remove three bolts (32), the nuts and wire clips that secure wire harness (31) to hydraulic line (33). Move wire harness (31) aside.
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Illustration 9 g00465142
Attach nylon lifting straps and a hoist to valve (14). Remove three bolts (34) that secure valve (14) to the mounting bracket. Use the hoist and carefully remove the valve from the machine. The weight of valve (14) is 62 kg (137 lb).