Start By:
- Release the pressure in the system. Refer to Disassembly and Assembly, "System Pressure - Release" for the machine that is being serviced.
- Remove the floorplate in the cab. Refer to Disassembly and Assembly, "Floorplate - Remove and Install".
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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. |
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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. |
Note: Put identification marks on all lines and on all hoses for installation purposes. Plug all lines and all hoses. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
- Drain the hydraulic tank into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Refill Capacities".
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Illustration 1 g01271914 - Disconnect hose assemblies (2) and (3) from gear pump (1).
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Illustration 2 g00719170 - Remove bolts (5) and (6).
- Disconnect hose assembly (4) from the piston pump.
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Illustration 3 g00719172 - Disconnect hose assemblies (7) and (10).
- Remove bolts (8) and disconnect tube assembly (9).
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Illustration 4 g01270846 - Disconnect harness assembly (11) under the piston pump.
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Illustration 5 g00719175 - Attach a suitable lifting device to piston pump (12). The weight of piston pump (12) is approximately
57 kg (125 lb) . - Remove bolts (13) and piston pump (12).
