Removal Procedure
Start By:
- Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
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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. |
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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 Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
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Note: Put identification marks on all hose assemblies and all harness assemblies for installation purposes. Plug all hose assemblies. This will help to prevent fluid loss and this helps to keep contaminants from entering the system.
- Drain the hydraulic oil into a suitable container for storage or disposal.
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| Illustration 1 | g01172490 |
- Disconnect five tube assemblies (2) from main control valve (1) .
- Remove five tube assemblies (2) from bracket (3) and position tube assemblies (2) aside.
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| Illustration 2 | g01172492 |
- Disconnect hose assembly (4) .
- Disconnect hose assemblies (5) .
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| Illustration 3 | g01172494 |
- Disconnect hose assemblies (6) .
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| Illustration 4 | g01172496 |
- Disconnect harness assemblies (7) .
- Disconnect hose assembly (8) .
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| Illustration 5 | g01172497 |
- Disconnect upper hose assemblies (9) from main control valve (1) .
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| Illustration 6 | g01172498 |
- Disconnect remaining hose assemblies (10) from main control valve (1) .
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| Illustration 7 | g01172499 |
- Disconnect lower hose assemblies (11) from main control valve (1) .
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| Illustration 8 | g01172506 |
- Disconnect hose assemblies (12) from the main control valve.
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| Illustration 9 | g01172507 |
- Attach a suitable lifting device to main control valve (1). The weight of main control valve (1) is approximately 181 kg (400 lb).
- Remove bolts (13) (not shown).
- Remove main control valve (1) .
