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Personal injury can result from hydraulic oil under pressure. Hydraulic oil under pressure can cause injury to persons on or near the machine when the pressure is suddenly released. At operating temperature, the hydraulic oil tank is hot and under pressure. Hot oil can cause burns. Remove the fill plug only when the engine is stopped, and the fill plug is cool enough to touch with your bare hand. Do not allow hot oil or components to contact skin. |
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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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Keep all parts clean from contaminants. Contamination of the hydraulic system with foreign material will reduce the service life of the hydraulic system components. To prevent contaminants from entering the hydraulic system, always plug or cap the lines, fittings, or hoses as they are disconnected. Cover any disassembled components and clean them properly before assembly. Clean the hydraulic system properly after any major component exchange or especially after a component failure, to remove any contamination. |
- Relieve the pressure in the hydraulic system. Refer to Testing and Adjusting, "Release of Pressure in the Hydraulic System".
- Drain the hydraulic oil. Refer to Operation and Maintenance Manual, "Hydraulic Sytem Oil - Change".
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Illustration 1 g00793855 - Remove hoses (1) for the stick and hoses (2) for the bucket.
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Illustration 2 g00794408 - In order to remove the rear swing motor, remove cover (3) above the implement and travel control valve.
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Illustration 3 g00794409 - In order to remove the rear swing motor, remove tubes (4) for the stick from the implement and travel control valve.
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Illustration 4 g00794415 - Disconnect hoses (5) from swing motor (6).
Note: Mark the hoses before you disconnect the hoses.
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Illustration 5 g00794418 - Disconnect oil drain hose (7) from swing motor (6).
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Illustration 6 g00794421 - Attach a suitable lifting strap and a hoist to swing motor (6).
Note: The swing motor weighs approximately
45 kg (99 lb) . - Remove bolts (8). Remove swing motor (6) from the machine.
