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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 g06357809 - Remove clip (2). Disconnect hose assemblies (1) and (3).
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Illustration 2 g06357811 - Attach a suitable lifting device to steering cylinder (4). The weight of steering cylinder (4) is approximately
21 kg (46 lb) .Show/hide table
Illustration 3 g06357813 - Remove cotter pin (5) and nut (6).
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Illustration 4 g06357815 - Remove bolt (7) and pin assembly (8).
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Illustration 5 g06357816 - Remove steering cylinder (4).
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Illustration 6 g06357820 - Remove washer (9) and boot seal (10).
Note: For installation purposes, count the threads before loosen the nut.
- Loosen nut (11) and remove socket assembly (12).
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 bolt (1) to a torque of
520 ± 70 N.m (384 ± 52 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 7 | g06357822 |
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
- Install socket assembly (12) and nut (11). Tighten nut (11) to a torque of
340 ± 40 N.m (251 ± 30 lb ft) . - Install boot seal (10) and washer (9).
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Illustration 9 g06357816 - Attach a suitable lifting device to steering cylinder (4). The weight of steering cylinder (4) is approximately
21 kg (46 lb) . Install steering cylinder (4).Show/hide table
Illustration 10 g06357815 - Install pin assembly (8) and bolt (7).
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Illustration 11 g06357813 - Install nut (6). Tighten nut (6) to a torque of
140 ± 14 N.m (103 ± 10 lb ft) to align the cotter slot. - Install cotter pin (5).
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Illustration 12 g06357809 - Connect hose assemblies (3) and (1). Install clip (2).
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| Illustration 8 | g06357820 |