Disassembly Procedure
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 8S-7640 | Stand | 1 |
| 8S-7615 | Pin | 1 | |
| 8S-7621 | Tube | 1 | |
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 |
|---|
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. |
- Put identification marks on all hoses, on all lines, 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.
- Install tool (A) in order to support the boom.
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| Illustration 1 | g00750147 |
- Remove six bolts (1) and six washers (2) in order to remove cover plate (3) from quick coupler (4) .
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| Illustration 2 | g00750457 |
- Loosen two retaining nuts (5) and disconnect two hoses (6) from hitch cylinder (7) .
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| Illustration 3 | g00750458 |
- Remove two bolts (8), two washers (9), and retaining plate (10) .
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| Illustration 4 | g00750460 |
- Rotate hitch cylinder (7) and at the same time push hitch cylinder (7) toward the left side of the machine. Use a suitable punch to drive dowel (12) through pin (11) as far as possible. Make sure that dowel (12) is clear of the rod of hitch cylinder (7). Dowel (12) will be still partially installed in pin (11) .
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| Illustration 5 | g00750462 |
- Remove pin (11) and dowel (12) .
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| Illustration 6 | g00750630 |
- Push hitch cylinder (7) toward the right side of the machine. Use a suitable punch to drive dowel (14) through pin (13) as far as possible. Make sure that dowel (14) is clear of the rod of hitch cylinder (7). Dowel (14) will be still partially installed in pin (13) .
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| Illustration 7 | g00750631 |
- Remove pin (13) and dowel (14) .
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| Illustration 8 | g00750632 |
- Remove hitch cylinder (7) from quick coupler (4) .
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| Illustration 9 | g00750636 |