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

Steering Check and Combiner 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.

Note: Turn off the engine. Apply the foot brake several times in order to relieve the pressure in the brake system.

Pull the hood release lever in the cab. Open the engine hood and engage the hood latch.
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 g00442603
Remove seven bolts (1) and hydraulic tank cover (2) from the machine.
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Illustration 2 g00461495
Remove two bolts (3) and the washers that secure top access panel (4) to the chassis. Remove the access panel.
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Illustration 3 g00461502
Remove four bolts (5), the washers, and two half flanges (6) that secure hydraulic hose (7) to steering check valve (8).
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Illustration 4 g00461576
Loosen retaining nut (9) and disconnect hose (10) from the fitting. Move the hose aside. Loosen retaining nut (11) and disconnect sensor (12) from the fitting. Move the sensor aside.
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Illustration 5 g00461586
Loosen retaining nut (13) and disconnect control valve (14) from the check valve. Move the control valve aside.
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Illustration 6 g00461619
Remove four bolts (15) and the washers that secure bottom access panel (16) to chassis.
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Illustration 7 g00461608
Remove reusable strap (17) from hydraulic hoses (18). Remove eight bolts (19), the washers and four half flanges (20) that secure hydraulic hoses to the check valve. Move the hydraulic hoses aside.
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Illustration 8 g00461614
Remove two bolts (21), the nuts, and the washers that secure check valve (8) to the chassis. Remove the check valve from the machine through the top access hole.