Start By:
- Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
Note: Inspect the O-ring seal for wear or for damage. If necessary, replace the O-ring seal.
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, "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. |
NOTICE |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
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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 work tools have been lowered to the ground, and the 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. |
- Open the right, rear door for access to accumulator (1). The accumulator is located below the main hydraulic pump.
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Illustration 2 g00822692 - Turn nut (2) which is located at the bottom of accumulator (1) in order to remove accumulator (1).
- Remove the O-ring seal from accumulator (1).
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Illustration 1 | g00822682 |
Required Tools | |||
Tool | Part Number | Part Description | Qty |
A | 7S-5437 | Nitrogen Charging Group | 1 |
- Install the O-ring seal on the accumulator.
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Illustration 3 g00822692 - Install accumulator (1) and tighten nut (2) in order to secure accumulator (1) on the machine.
- Attach Tooling (A) to the nitrogen container. Attach Tooling (A) to the accumulator.
- Charge accumulator (1) to
1760 ± 100 kPa (255 ± 14 psi) . - Remove Tooling (A).
- Check the hydraulic oil level. Refer to Operation and Maintenance, "Hydraulic System Oil Level - Check". Refer to Operation and Maintenance, "Lubricant Viscosities and Refill Capacities".