994D Wheel Loader Machine System Caterpillar

Installation Procedure

Note: Verify that all of the components of the steering control valve are clean and free of foreign material prior to installation.

Note: Check all of the O-ring seals and the components for wear or damage. Replace the components, if necessary. Lubricate the O-ring seals lightly with the lubricant that is being sealed.

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Illustration 1	g00588743

1. Attach Tool (A) to steering control valve (7). Position a suitable lifting device to Tool (A). Secure the suitable lifting device to a hoist. The weight of bracket assembly (25) and steering control valve (7) is 122 kg (270 lb).

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Illustration 2	g00588747

2. Position bracket assembly (25) and steering control valve (7) to the engine end frame.

3. Install four bolts (24) and the washers that secure bracket assembly (25) and steering control valve (7) to the engine end frame. Connect hose assembly (23) to steering control valve (7) .

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Illustration 3	g00588738

4. Connect two hose assemblies (21) and (20) to steering selector and pressure control valve (22) .

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Illustration 4	g00588736

5. Connect eight hose assemblies (19), (18), (17), (16), (15), (14), (13), and (12) to steering control valve (7) .

6. Install bolt (11) and the clip to steering control valve (7). Connect hose assembly (10) to the steering selector and pressure control valve.

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Illustration 5	g00588729

7. Install bolt (8), the washers, and the nut in order to connect clamp (9) to steering control valve (7) .

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Illustration 6	g00588912

8. Connect three hose assemblies (4), (5), and (6) to steering control valve (7) .

9. Position clamp (3) to hose assembly (4). Install bolt (2), the washers, and the nut that secures clamp (3) to hose assembly (4). Close the door assemblies behind the cab.

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Illustration 7	g00589385

10. Replace two drain plugs (1). Tighten two drain plugs (1) to a torque of 68 ± 7 N·m (50 ± 5 lb ft).

11. Fill the two hydraulic tanks for the steering and brake system. Refer to Operation and Maintenance Manual, "Steering and Brake System Oil - Change" for the correct procedure to fill the hydraulic tank. Refer to Operation and Maintenance Manual, "Lubricant Viscosities" for the appropriate oil.

12. The capacity of the steering and brake hydraulic system is 267 L (70.5 US gal).

End By:

1. Charge the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System - Pressure Release/Charge".
2. Separate the frame lock link. Refer to Disassembly and Assembly, "Frame Lock Link - Separate and Connect".
3. Remove the wheel chocks. Refer to Disassembly and Assembly, "Wheel Chock (Front and Rear) - Remove and Install".