Removal Procedure
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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 machine. 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 in Caterpillar machines. 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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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
Note: Check the condition of all seals and of all components. If any parts are worn or damaged, use new parts for replacement.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
- Remove bolts (1) and flanges (2) from two tube assemblies (3). There is a tube assembly (3) at each end of bypass valve housing (4) .
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| Illustration 1 | g00582869 |
- Remove bypass valve housing (4) from the engine.
- Check the condition of O-ring seals (5) and replace the seals, if necessary.
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| Illustration 2 | g00353091 |
- Remove plug (6), spring (7) and valve (8) from the valve housing.
Installation Procedure
- Install valve (8), spring (7) and plug (6) in the valve housing. Lubricate valve (8) with clean hydraulic oil.
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| Illustration 3 | g00353091 |
- Install O-ring seals (5). If necessary, replace the old seals with new seals.
- Install bypass valve housing (4) on the engine.
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| Illustration 4 | g00582869 |
- Install two tube assemblies (3) with flanges (2) and bolts (1) .
Note: Refer to Operation and Maintenance Manual for all fluid capacities and the proper filling procedures.