Removal Procedure
Start By:
- Release the pressure in the hydraulic system. Refer to Disassembly and Assembly, "System Pressure - Release" for the machine that is being serviced.
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At operating temperature the implement hydraulic oil tank is hot and under pressure. Hot oil can cause burns. To prevent possible injury, release the pressure in the implement hydraulic system before hydraulic lines or components are disconnected or removed. |
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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 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. |
Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Note: Put identification marks on all lines, on all hoses, on all wires and on all tubes for installation purposes. Plug all lines, all hoses and all tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
- Drain the hydraulic system. The capacity of the hydraulic tank is 450 L (119 US gal).
Reference: Operation and Maintenance Manual, SEBU7172, "Lubrication Viscosities and Refill Capacities"
- Loosen clamp (2). Remove precleaner assembly (1) .
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| Illustration 1 | g00599336 |
- Remove bolts (3) and the washers. Remove cover (4) .
- Loosen clamps (5) and (8). Remove bolt (6) and the washer. Remove hose (7) .
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| Illustration 2 | g00599342 |
- Remove four bolts (10) and the washers. Remove air cleaner (9) .
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| Illustration 3 | g00599393 |
- Remove four bolts (12) and the washers from bracket (1). Remove bracket (11) .
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| Illustration 4 | g00599397 |
- Loosen clamps (1). Remove bolts (13) and the washers from tube assembly (14). Remove tube assembly (14) .
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| Illustration 5 | g00599406 |
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| Illustration 6 | g00599416 |
- Disconnect hose assemblies (15), (16) and (18) .
- Fasten suitable lifting slings and a hoist to the piston pump. Remove 12 bolts (19) and the washers.
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| Illustration 7 | g00599401 |
- Remove the piston pump. the weight of the piston pump is 135 kg (300 lb).