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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. |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
- Release the system pressure. Refer to Operation and Maintenance Manual, "System Pressure - Release".
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Illustration 1 g06357145 - Remove bolts (2) and (3).
- Use two people to remove fender assembly (1). The weight of fender assembly (1) is approximately
40 kg (88 lb) . Remove fender assembly (1).Show/hide table
Illustration 2 g06356846 - Disconnect hose assembly (4).
- Disconnect hose assemblies (5) and (6).
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Illustration 3 g06356848 Show/hide table
Illustration 4 g06356852 - Remove U-bolts (7) and bolt (9).
- Remove guard assembly (8).
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Illustration 5 g06356854 - Attach a suitable lifting device to steering cylinder (10). The weight of steering cylinder (10) is approximately
22 kg (49 lb) .Show/hide table
Illustration 6 g06356857 - Remove nut (11).
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Illustration 7 g06356860 - Remove bolt (13) and pin assembly (12). Remove spacer (14).
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Illustration 8 g06356863 - Remove steering cylinder (10).
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Illustration 9 g06356865 - Remove boot seal (15). Remove retaining ring (16) and cap assembly (17). Remove O-ring seal (18).
Disassembly and Assembly Information
| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 127-4904 | Hydraulic Cylinder Repair Stand Gp | 1 |
| B | 195-4609 | Seal Pick | 1 |
| C | - | Loctite 648 | - |
| D | 452-6011 | Multipurpose Grease | - |
| E | 9U-7868 | Spanner Wrench | 1 |
| 127-8064 | Adapter Plate Gp | 1 | |
| F | 1P-0510 | Driver 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. |
- Tighten nut (1) to a torque of
450 ± 45 N.m (332 ± 33 lb ft) . - Lubricate sealing lips (3) and (4) with a thin covering of the lubricant that is being sealed.
- Apply Tooling (C) to wiper seal (5) groove before assemble the wiper seal to the head.
- Apply Tooling (D) to the threads of head (2). Tighten head (2) to a torque of
600 ± 130 N·m (440 ± 95 lb ft) .
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| Illustration 10 | g06356866 |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
- Install O-ring seal (18). Install cap assembly (17) and retaining ring (16).
- Install boot seal (15).
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Illustration 12 g06356863 - Attach a suitable lifting device to steering cylinder (10). The weight of steering cylinder (10) is approximately
22 kg (49 lb) . Install steering cylinder (10).Show/hide table
Illustration 13 g06356860 - Install spacer (14). Install pin (12) and bolt (13).
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Illustration 14 g06356857 - Install locknut (11). Tighten locknut (11) to a torque of
220 ± 14 N.m (162 ± 10 lb ft) .Show/hide table
Illustration 15 g06356852 Show/hide table
Illustration 16 g06356848 - Install guard assembly (8). Install bolt (9) and U-bolts (7).
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Illustration 17 g06356846 - Connect hose assemblies (5), (6), and (4).
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Illustration 18 g06357145 - Use two people to install fender assembly (1). The weight of fender assembly (1) is approximately
40 kg (88 lb) . Install fender assembly (1). - Install bolts (2) and (3).
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| Illustration 11 | g06356865 |