Removal Procedure
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 1P-1859 | Retaining Ring Pliers | 1 |
| 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 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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Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death. Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder. |
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Note: Cleanliness is an important factor. Before the disassembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Note: Put identification marks on all lines, on all hoses, on all wires, and on all tubes for installation purposes. Plug all lines, hoses, and tubes. This helps to prevent fluid loss and this helps to keep contaminants from entering the system.
- Fully retract the bucket cylinder and fully retract the stick cylinder. Lower the boom and position the bucket on the ground.
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| Illustration 1 | g01185774 |
- Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
- Release the pressure in the load control valve. Refer to Disassembly and Assembly, "Load Control Valve (Boom Cylinder) - Remove and Install".
- Disconnect hose assemblies (1) .
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| Illustration 2 | g01184485 |
- Disconnect hose assembly (2) .
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| Illustration 3 | g01184487 |
- Attach a suitable lifting device to boom cylinder (7) . The weight of boom cylinder (7) is approximately 50 kg (110 lb).
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| Illustration 4 | g01185793 |
- Use Tooling (A) in order to remove retaining rings (3) and (4) . Remove pin (5) and pin assembly (6) . Remove boom cylinder (7) .
Disassembly and Assembly Information
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| B | 127-4904 | Repair Stand | 1 |
| C | 1P-0808 | Multipurpose Grease | 1 |
| D | 5P-3520 | Spanner Wrench | 1 |
| E | 7M-7456 | Bearing Mount Compound | 1 |
| F | 195-4609 | Seal Pick | 1 |
| G | 5P-4197 | Spacer | 1 |
| 3S-6224 | Electric Hydraulic Pump Gp | 1 | |
| FT-3035 | Puller Plate | 1 | |
| 6V-3160 | Double Acting Cylinder | 1 | |
| 9U-6833 | Nut | 1 | |
| 4C-9633 | Puller Stud | 1 | |
| 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 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. |
|
Cylinders equipped with lock valves can remain pressurized for very long periods of time, even with the hoses removed. Failure to relieve pressure before removing a lock valve or disassembling a cylinder can result in personal injury or death. Ensure all pressure is relieved before removing a lock valve or disassembling a cylinder. |
|
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| Illustration 5 | g01553916 |
(1) Apply Tooling (C) to the threads and tighten the nut to a torque of 1720 ± 170 N·m (1260 ± 125 lb ft).
(2) Apply Tooling (C) to the threads and tighten the head to a torque of 735 ± 74 N·m (540 ± 55 lb ft).
(3) Apply Tooling (E) to the seal groove prior to installation of the wiper seal.
(4) Lubricate the seals with the lubricant that is being sealed.
Installation Procedure
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 1P-1859 | Retaining Ring Pliers | 1 |
| 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 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. |
Note: Cleanliness is an important factor. Before the assembly procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
- Attach a suitable lifting device to boom cylinder (7) and position boom cylinder (7) . The weight of boom cylinder (7) is approximately 50 kg (110 lb).
| | |
| Illustration 6 | g01185793 |
- Install pin (5) and pin assembly (6) . Use Tooling (A) in order to install retaining rings (3) and (4) .
- Connect hose assembly (2) .
| | |
| Illustration 7 | g01184487 |
- Connect hose assemblies (1) .
| | |
| Illustration 8 | g01184485 |