| Required Tools | |||
| Tool | Part Number | Part Description | Qty |
| A | 270-8312 | Strut Handler | 1 |
| B | 504-9790 | Lift Gp (60 Hz)(1) | 2 |
| OR | |||
| 504-9792 | Lift Gp (50 Hz)(2) | 2 | |
| C | 148-0357 | Strut Handler | 1 |
| D | 2H-3758 | Bolt | 8 |
| (1) | High-Voltage (480V) Low-Voltage (240V) |
| (2) | High-Voltage (400V) Low-Voltage (200V) |
Start By:
- Remove the front tire and rim.
- Release the pressure in the air system.
- Release the pressure from the hydraulic system.
| NOTICE |
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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, NENG2500, "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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Personal injury can result from hot oil or hot components. At operating temperature, oil is hot and under pressure. Hot oil can cause burns. Remove the fill cap only when the engine is stopped, and the fill cap is cool enough to touch with your bare hand. Do not allow hot oil or components to contact skin. |
| NOTICE |
|---|
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Keep all parts clean from contaminants. Contaminants may cause rapid wear and shortened component life. |
Note: Put identification marks on all hose assemblies and on all tube assemblies for installation purposes. Plug all hose assemblies and all tube assemblies to prevent fluid loss and helps to prevent contaminants from entering the system.
- Drain the hydraulic oil from the hydraulic tank into a suitable container. Refer to Operation and Maintenance Manual, "Hoist, Torque Converter and Brake Tank Oil - Change".
- Drain the oil from the front wheel into a suitable container for storage or disposal. Refer to Operation and Maintenance Manual, "Front Wheel Oil - Change".
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Read all Warning labels on the suspension cylinders before servicing.
The machine must be on level ground before releasing the nitrogen pressure.
Do not check the oil in the suspension cylinder until all of the nitrogen pressure has been released.
Do not remove valves, covers, or plugs from the cylinder unless the rod is fully retracted and all of the nitrogen pressure as been released.
Stand clear of the machine during suspension cylinder charging, discharging, or testing and adjusting procedures, or while lifting or lowering the machine.
Sudden movement upward or downward can cause clearance to change rapidly.
Failure to heed this Warning could lead to injury or death.
- Discharge the suspension cylinder. Refer to Testing and Adjusting, "General Information".
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Illustration 1 g01730067 - Remove plugs (1) to drain the brake assembly into a suitable container for storage or disposal.
- Install plugs (1).
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Illustration 2 g01730197 Show/hide table
Illustration 3 g01730113 - Use a suitable lifting device to support steering cylinder assembly (2) and steering link (3).
- Disconnect grease hose assemblies (4).
- Remove bolts (5). Position steering arm (6), steering cylinder assembly (2), and steering link (3). The weight of steering arm (6), steering cylinder assembly (2), and steering link (3) is approximately
362 kg (800 lb) .Show/hide table
Illustration 4 g01730234 - Disconnect hose assembly (7). Disconnect hose assembly (8). Position bracket (9) out of the way.
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Illustration 5 g01730274 - Disconnect hose assembly (10).
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Illustration 6 g01730293 - Disconnect hose assembly (11). Remove bolts (12) and blocks (13).
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Illustration 7 g01730313 - Disconnect hose assembly (14).
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Illustration 8 g01730333 - Disconnect harness assembly (15).
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Illustration 9 g01730375 - Disconnect grease hose assembly (16). Remove clips (17).
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Illustration 10 g01730413 - Remove bolts (18). Remove shims (19).
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Illustration 11 g01731873 Show/hide table
Illustration 12 g01731915 - Install Tooling (A) onto front wheel, brake, and suspension cylinder (20). The weight of front wheel, brake, and suspension cylinder (20) is approximately
3574 kg (7880 lb) .Note: Ensure that the retaining chain is fastened securely around the suspension cylinder.
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Illustration 13 g01732115 - Remove bolts (21). Remove bolt (22). Repeat this step for the opposite side of suspension cylinder (20).
Note: The bolts and the nuts are not reusable. Discard the bolts and the nuts.
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Illustration 14 g06282794 - Remove Tooling (B) from front wheel, brake, and suspension cylinder (20). Refer to Tool Operating Manual , NEHS1303, "Lift Group (Stand - 25 Ton)" for more information on Tooling (B).
- Remove front wheel, brake, and suspension cylinder (20).
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Illustration 15 g01733315 - Remove key (23) from the frame assembly.
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Illustration 16 g01733981 - Use Tooling (A) to position front wheel, brake, and suspension cylinder (20) onto Tooling (C).
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Illustration 17 g01733994 - Install Tooling (D) and remove Tooling (A).
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Illustration 18 g01734034 Show/hide table
Illustration 19 g01734054 - Remove bearing cap (24). Remove retaining ring (25). Remove bearing (26).
