Removal Procedure
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 1P-1859 | Retaining Ring Pliers | 1 |
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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: Put identification marks on all hoses, on all hose assemblies, on all wires, and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss, and this helps to keep contaminants from entering the system.
Note: Cleanliness is an important factor. Before you begin the removal procedure, the exterior of the components should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
| 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. |
- 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 | g01184461 |
- Release the hydraulic system pressure. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
- Attach a suitable lifting device to boom cylinder (5). The weight of boom cylinder (5) is approximately 30 kg (65 lb).
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| Illustration 2 | g01184471 |
- Use Tooling (A) to remove retaining rings (2). Remove washers (3), pin (4), and pin assembly (6) .
- Remove boom cylinder (5) .
- Remove cover assembly (7) .
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| Illustration 3 | g01184682 |
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 | |
|
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 4 | g01182853 |
(1) Lubricate the seals.
(2) Apply Tooling (B) to the threads. Use Tooling (C) to tighten the head to a torque of 450 ± 50 N·m (332 ± 37 lb ft).
(3) Apply Tooling (B) to the threads. Tighten the nut to a torque of 235 ± 24 N·m (173 ± 18 lb ft).
(4) Apply Tooling (D) to the groove of the wiper seal prior to assembly.
Installation Procedure
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 1P-1859 | Retaining Ring Pliers | 1 |
Note: Cleanliness is an important factor. Before assembly, thoroughly clean all parts in cleaning fluid. Allow the parts to air dry. Do not use wiping cloths or rags to dry parts. Lint may be deposited on the parts which may cause trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement. Dirt and other contaminants can damage the precision component. Perform assembly procedures on a clean work surface. Keep components covered and protected at all times.
| 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. |
- Install cover assembly (7) .
| | |
| Illustration 5 | g01184682 |
- Position boom cylinder (5) .
| | |
| Illustration 6 | g01184471 |
- Install pin (4), pin assembly (6), and washers (3). Use Tooling (A) to install retaining rings (2) .
- Connect hose assemblies (1) .
End By: Install the bucket linkage. Refer to Disassembly and Assembly, "Bucket Linkage - Remove and Install".