Removal Procedure
| NOTICE |
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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, "Caterpillar Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
- Remove charge pressure relief valve (1) from the valve body.
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| Illustration 1 | g00540201 |
- Carefully remove cap (2), locknut (3) and gaskets (7) without turning adjustment screw (4) .
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. Dirt and contaminants can damage the precision made components of the pump or the motor. All disassembly and assembly procedures must be performed on a clean work surface. Clean all the interior components in clean solvent. Dry all the interior components with compressed air. Plug ports and plug hoses on the machine during repair.
Note: The relief valve is preset at the factory.
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| Illustration 2 | g00736033 |
- Remove O-Ring seals (6), (8) and (5) from charge pressure relief valve (1) .
Installation Procedure
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. Dirt and other contaminants can damage the precision made components of the pump or of the motor. All disassembly and all assembly procedures must be performed on a clean work surface and in a clean hydraulic area. Keep cleaned parts covered and protected at all times.
Note: O-ring seals, gaskets, and seals should always be replaced. A used O-ring seal may not have the same sealing properties as a new O-ring seal. A reconditioning procedure should not be degraded because of a low cost component such as an O-ring seal or a gasket. Use 1U-6396 O-Ring Assembly Compound during the assembly procedure.
- Install O-Ring seals (5), (8) and (6) on charge pressure relief valve (1) .
Note: The relief valve was preset at the factory. Be careful not to turn the adjustment screw in the assembly procedure.
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| Illustration 3 | g00736033 |
- Carefully install gaskets (7), locknut (3) and cap (2) on adjustment screw (4) .
Note: Do not turn the adjustment screw in the installation procedure.
- Install charge pressure relief valve (1) into the valve body.
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| Illustration 4 | g00540201 |