Start By:
- Prepare the machine for disassembly. Refer to Disassembly and Assembly, "Preparation for Disassembly".
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
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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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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
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| Illustration 1 | g00625711 |
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(1) All Wheel Drive Control Valve. (2) Neutralizer Valve. (3) Speed Control Valve. (4) Differential Lock Control Valve. (5) Rear Brake Valve. (6) Front Brake Valve. | |
- Turn on the vacuum pump control. Refer to Operation and Maintenance Manual, "Vacuum Pump Control".
Show/hide table
Illustration 2 g00625733 - Remove the screw that holds harness assembly (7) in place. Disconnect harness assembly (7).
- Remove the four bolts that hold solenoid valve (8) in place. Remove solenoid valve (8) and four O-ring seals.
Note: Cleanliness is an important factor. Before assembly, 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. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
- Install four O-ring seals and solenoid valve (8) with four bolts.
- Connect harness assembly (7) with one screw.
- Turn off the vacuum pump control. Refer to Operation and Maintenance Manual, "Vacuum Pump Control".
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| Illustration 3 | g00625733 |