| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 432-5977 | Driver As | 1 |
Start By:
- Remove the accumulator.
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Pressurized System! Hydraulic accumulators contain gas and oil under high pressure. DO NOT disconnect lines or disassemble any component of a pressurized accumulator. All gas pre-charge must be removed from the accumulator as instructed by the service manual before servicing or disposing of the accumulator or any accumulator component. Failure to follow the instructions and warnings could result in personal injury or death. Only use dry nitrogen gas to recharge accumulators. See your Cat dealer for special equipment and detailed information for accumulator service and charging. |
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Personal injury or death can result from escaping fluid under pressure. Escaping fluid under pressure, even a very small pin-hole size leak, can penetrate body tissue and cause serious injury and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury. Always use a board or cardboard when checking for a leak. |
| 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, PERJ1017, "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. |
Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. Cleaning will help to prevent dirt from entering the internal mechanism.
- Discharge the nitrogen pressure from the accumulator. Refer to Special Instruction, REHS5464, "Accumulator Discharging and Charging Procedures" for the correct procedure to release the nitrogen from the accumulator.
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Illustration 1 g06371787 - Clamp accumulator (1) to a suitable work bench and remove block assembly (4).
- Remove the labels that are at each end of the cylinder.
- Use Tooling (A) to turn end cap (3) and end cap (5) in a clockwise direction to remove the pressure on locking pins (8).
- Insert a small, thin screwdriver blade in the end of the cylinder and push locking pins (8) back into the tube to unscrew the end caps.
- Remove end cap (3) and end cap (5).
- Remove O-ring seal (2) and O-ring seal (6) from the end caps.
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Illustration 2 g06371798 - Push piston (7) out of the accumulator in the direction of the fluid side.
- Remove guide rings (9), profile ring (10), oil wiping ring (11), profile ring (12), profile ring (13), and O-ring (14).
