| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | FT-1115 | Vacuum Cap | 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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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, PERJ1017, "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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Hydraulic oil pressure can remain in the hydraulic system on this machine after the engine and pump have been stopped. Serious injury can result if this pressure is not released before any service is done on the hydraulic systems. In order to prevent possible injury, release the hydraulic system pressure before working on any fitting, hose, or hydraulic component. Lower all attachments to the ground before service is started. If the hydraulic system must be serviced, tested, or adjusted with the attachment in the raised position, the attachments and lift cylinders must be supported properly. Always move the machine to a location away from the travel of other machines. Be sure that other personnel are not near the machine when the engine is running and tests or adjustments are being made. |
- Lower the blade to the ground.
- Release the system pressure. Refer to Operation and Maintenance Manual, "System Pressure - Release".
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Illustration 1 g06283123 - Install Tooling (A) onto the hydraulic tank. Attach an air supply hose onto Tooling (A). Apply
138 kPa (20 psi) to pull a vacuum on the hydraulic system.Show/hide table
Illustration 2 g01438148 - Disconnect grease hose assemblies (4). Disconnect hose assemblies (1). Disconnect clips (3). Remove clamp (2).
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Illustration 3 g01438312 - Attach a suitable lifting device to blade lift cylinder (5). The weight of blade lift cylinder (5) is approximately
154 kg (340 lb) . Apply a slight lifting tension to blade lift cylinder (5). - Remove bolts (6). Remove cap assembly (7). Repeat this step for the opposite cap assembly.
- Remove bolts and nuts (8). Remove cap (10) and shims (9). Use the suitable lifting device to remove blade lift cylinder (5).
Note: Record the quantity of shims for installation purposes.
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Illustration 4 g01438455 - Remove bearing (11) from cap (12).
Note: Note the orientation of bearing (11) for installation purposes.
- Repeat Steps 4 through 7 for the opposite blade lift cylinder.
Disassembly and Assembly Information
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| B | 152-4251 | Hydraulic Cylinder Repair Stand | 1 |
| C | 195-4609 | Seal Pick | 1 |
| D | 7M-7456 | Bearing Mount Compound | 1 |
| E | 1P-0808 | Multipurpose Grease | 1 |
| F | 9U-7868 | Spanner Wrench | 1 |
| 127-8064 | Adjustable Plate | 1 | |
| G | 1P-0770 | Seal Guide | 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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| Illustration 5 | g01438467 |
(1) Tighten the nut to a torque of
(2) Lubricate sealing lips with a thin covering of the lubricant that is being sealed.
(3) Apply Tooling (D) to the seal groove prior to assembling the wiper seal.
(4) Torque for head ...
Note: Lubricate the threads with Tooling (E).
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | FT-1115 | Vacuum Cap | 1 |
| B | 1P-0510 | Driver Gp | 1 |
Note: Cleanliness is an important factor. Before assembly, all parts should be thoroughly cleaned in cleaning fluid. Allow the parts to air dry. Do not dry parts with cloths or rags. Lint may be deposited on the parts which may cause later trouble. Inspect all parts. If any parts are worn or damaged, use new parts for replacement.
- Lower the temperature of bearing (11). Use Tooling (B) to install bearing (11) into cap (12).
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Illustration 7 g01438312 - Attach a suitable lifting device to blade lift cylinder (5). The weight of blade lift cylinder (5) is approximately
154 kg (340 lb) . Use the suitable lifting device to position blade lift cylinder (5). - Position cap (10) and shims (9). Install bolts and nuts (8).
- Position cap assembly (7). Install bolts (6). Repeat this step for the opposite cap assembly.
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Illustration 8 g01438148 - Connect hose assemblies (1). Install clamp (2) and clips (3). Connect grease hose assemblies (4).
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Illustration 9 g06283123 - Remove Tooling (A).
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| Illustration 6 | g01438455 |