Removal Procedure
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 1P-1859 | Retaining Ring Pliers | 1 |
| B | 1P-1863 | 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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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 work tools have been lowered to the ground, and the 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 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: 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.
- Place the stick on the ground. Lower the hoe bucket to the ground.
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| Illustration 1 | g01250103 |
- Release the pressure in the hydraulic oil system. Refer to Disassembly and Assembly, "Hydraulic System Pressure - Release".
- Disconnect hose assemblies (1) and (4). Disconnect clamps (2) and (3) .
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| Illustration 2 | g01250104 |
- Attach a suitable lifting device to backhoe bucket cylinder (5). The weight of backhoe bucket cylinder (5) is approximately 110 kg (245 lb).
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| Illustration 3 | g01675249 |
- Use Tooling (A) in order to remove retaining ring (6). Use Tooling (B) in order to remove retaining ring (9). Remove retaining rings (6) and (9). Remove shims (7) and (10). Remove pins (8) and (11). Remove backhoe bucket cylinder (5) .
Disassembly and Assembly Information
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 125-0079 | Hydraulic Cylinder Repair Stand Gp | 1 |
| 152-4249 | Hydraulic Cylinder Repair Stand Gp | 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. |
|
| 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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| Illustration 4 | g01675251 |
(S/N: DSK1-UpDXC1-UpRXS1-UpSXB1-Up) | |
(1) Lubricate the sealing lips with the fluid that is being sealed.
(2) Torque for the bolt ... 1800 ± 200 N·m (1330 ± 150 lb ft)
(3) Torque for the head ... 600 ± 130 N·m (440 ± 95 lb ft)
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| Illustration 5 | g01675252 |
(S/N: PCR1-UpHXB1-Up) | |
(1) Lubricate the sealing lips with the fluid that is being sealed.
(2) Torque for the bolt ... 3100 ± 350 N·m (2280 ± 260 lb ft)
(3) Torque for the head ... 600 ± 130 N·m (440 ± 95 lb ft)
Installation Procedure
| Required Tools | |||
|---|---|---|---|
| Tool | Part Number | Part Description | Qty |
| A | 1P-1859 | Retaining Ring Pliers | 1 |
| B | 1P-1863 | 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. |
- Attach a suitable lifting device to backhoe bucket cylinder (5). The weight of backhoe bucket cylinder (5) is approximately 110 kg (245 lb). Position backhoe bucket cylinder (5).
| | |
| Illustration 6 | g01675249 |
- Install pins (8) and (11). Install shims (7) and (10). Use Tooling (A) in order to install retaining ring (6). Use Tooling (B) in order to install retaining ring (9). Install retaining rings (6) and (9) .
- Connect hose assemblies (1) and (4). Connect clamps (2) and (3) .
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| Illustration 7 | g01250104 |