784C and 785C Off-Highway Trucks Machine Systems Caterpillar

Installation Procedure

Note: Cleanliness is an important factor. Before the installation procedure, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Wiping cloths or rags should not be used to dry parts. Lint may be deposited on the parts which may cause later trouble.

1. Check all of the O-ring seals and the components for wear or damage. Replace the components, if necessary.

2. Lubricate all of the O-ring seals lightly with the lubricant that is being sealed.
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   Illustration 1	g00505399

3. Position traction control valve (2) for installation on the frame assembly. Use bolt (21), the washer, and the clip in order to install solenoid (20) and traction control valve (2).

4. Install the following fittings onto traction control valve (2): (15), (16), (17), (18) and (19).

   Note: Install the fittings, as shown. This will ease the installation of the hose assemblies.

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   Illustration 2	g00505398

5. Install brake retraction pressure sensor (14).
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   Illustration 3	g00505393

6. Connect hose assembly (13).
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   Illustration 4	g00505391

7. Connect hose assembly (12).
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   Illustration 5	g00505390

8. Connect hose assembly (11).
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   Illustration 6	g00505389

9. Use one bolt (10), the washer, and the clip in order to position wire harness (4) and solenoid (9) onto traction control valve (2).

10. Install brake retraction pressure sensor (8).
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    Illustration 7	g00505361

11. Connect the following wire harnesses to wire harness (4) at the electrical connections: (5), (6) and (7).
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    Illustration 8	g00505353

12. Connect hose assembly (1) and (3) to traction control valve (2).

13. Fill the hydraulic tank with hydraulic oil to the correct level. Refer to Operation and Maintenance Manual, SEBU7173, "Hoist, Torque Converter and Brake Tank Oil - Change" for the correct procedure.

End By:

1. Disconnect the retaining cable. Refer to Disassembly and Assembly, "Truck Body Retaining Cable - Remove and Install".

2. Remove the wheel chocks. Refer to Disassembly and Assembly, "Wheel Chock (Front and Rear) - Remove and Install".