Removal Procedure
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Personal injury can result from the sudden release of high pressure oil. Be sure the engine has been shut off for a minimum of five minutes to be sure that the accumulator pressure is zero. The accumulator is filled with dry nitrogen. Do not loosen or remove the valve or cap from the top of the accumulator. A bleed screw at the bottom of the accumulator can be used to release the pressure that is left in the system. |
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At operating temperature, the hydraulic tank is hot and under pressure. Hot oil and components can cause personal injury. Do not allow hot oil or components to contact skin. Remove the filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. Remove the filler cap slowly in order to relieve pressure. |
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| 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 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. |
- Remove four bolts (2) and remove cover (1) from step (3) .
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| Illustration 1 | g00509876 |
- Remove three bolts (4) in order to remove step (3) from the machine. Remove step (3) from the machine.
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| Illustration 2 | g00509879 |
- Disconnect two hydraulic hoses (5) from hydraulic fitting (6) .
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| Illustration 3 | g00513281 |
- Note the orientation of hydraulic fitting (6) and relief valve (10) in relationship to bracket (8) for installation purposes. Remove hydraulic fitting (6) from accumulator (9) . Remove nut (7) that secures accumulator (9) to bracket (8) . Remove the accumulator from the bracket.
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| Illustration 4 | g00513282 |
Installation Procedure
- Inspect all parts and clean all parts. If any parts are worn or damaged, use new Caterpillar parts for replacement.
- Position a new accumulator (9) to bracket (8) . Install accumulator (9) in order to position relief valve (10) , as shown. Install nut (7) that secures accumulator (9) to bracket (8) . Install hydraulic fitting (6) to accumulator (9) .
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| Illustration 5 | g00513282 |
Note: See Operation and Maintenance Manual, SEBU7028 for the correct procedure on charging accumulators.
- Connect two hydraulic hoses (5) to hydraulic adapter (6) .
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| Illustration 6 | g00513281 |
- Position step (3) to the machine. Install three bolts (4) that secure step (3) to the machine.
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| Illustration 7 | g00509879 |
- Position cover (1) to step (3) . Install four bolts (2) that secure cover (1) to step (3) .
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| Illustration 8 | g00509876 |