| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 350-7768 | Electric Hydraulic Pump Gp(115V) | - |
| 350-7769 | Electric Hydraulic Pump Gp(230V) | - | |
| 6V-3175 | Double Acting Cylinder | 1 | |
| 380-5721 | Sleeve As | 1 | |
| 9U-6832 | Nut | 1 | |
| 4C-9634 | Puller Stud | 1 | |
| 4K-0684 | Hard Washer | 1 | |
| 5P-8677 | Adapter | 1 | |
| B | 1U-7542 | Ram | 1 |
| 4J-7945 | Bolt | 3 | |
| 5P-8248 | Hard Washer | 3 | |
| FT-3075 | Plate | 1 | |
Start By:
- Install the wheel chocks. Refer to Disassembly and Assembly, "Wheel Chocks (Front and Rear) - Remove and Install".
| 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, "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 hot oil or hot components. At operating temperature, oil is hot and under pressure. Hot oil can cause burns. Remove the fill cap only when the engine is stopped, and the fill cap is cool enough to touch with your bare hand. Do not allow hot oil or components to contact skin. |
- Use a suitable lifting device and a hoist to support the weight of hoist cylinder (1). The weight of hoist cylinder (1) is
834.61 kg (1840 lb) . - Remove two bolts (2), the two washers and bar (3).
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Illustration 3 g06266773 - Use Tooling (A) to remove pin assembly (4) and two spacers (5) and (6) (not shown).
- Use the hydraulic system of the truck to retract hoist cylinder (1) enough to clear the mounting bracket of the truck body.
- Drain the hydraulic oil from the hydraulic tank into a suitable container. The capacity of the hydraulic tank is
420 L (111 US gal) . Refer to Operation and Maintenance Manual, SEBU7173, "Hoist, Torque Converter and Brake Tank Oil - Change" for the correct procedure.Show/hide table
Illustration 4 g00511322 Show/hide table
Illustration 5 g00511323 - Disconnect hose assemblies (7) and (8). Disconnect hose assembly (9).
Note: The left hoist cylinder and the right hoist cylinder are identical, but the left hoist cylinder may be equipped with two quick couplers. The quick couplers are used to dump a load if the truck is disabled.
- If necessary, remove two unions (10) and (11).
- Remove three bolts (12), the washers and cover (13).
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Illustration 6 g00574944 - Use Tooling (B) to remove hoist cylinder (1) from the frame assembly.
- Remove bearing (14) from the frame assembly.
Note: Bearing (14) is a two-piece bearing. Bearing (14) will fall from the frame assembly when hoist cylinder (1) is removed.
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Illustration 7 g00475373 - Remove hoist cylinder (1) from the frame assembly. The weight of hoist cylinder (1) is
834.61 kg (1840 lb) . - Remove Tooling (B) and retainer (15) from the frame assembly.
Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. Thorough cleaning will help to prevent dirt from entering the internal mechanism.
Note: Put identification marks on all hose assemblies and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies to prevent fluid loss and contaminants from entering the system.
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| Illustration 1 | g00545872 |
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| Illustration 2 | g00545903 |
