Start By:
- Install the wheel chocks. Refer to Disassembly and Assembly, "Wheel Chocks - Remove and Install" for the correct procedure.
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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. |
- Install blocking between frame assembly (3) and A-frame (4) in order to support the weight of frame assembly (3) when rear suspension cylinder (1) is removed.
- Release the nitrogen charge from suspension cylinder (1). Refer to Suspension Cylinder Systems Operation/Testing and Adjusting, SENR1496, "Suspension Cylinder (Rear) - Purge and Charge" for the correct procedure.
- Remove the hose clamp and suspension cover (2) from suspension cylinder (1).
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Illustration 3 g00506169 - Remove two bolts (5) and the washers in order to remove guard (6).
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Illustration 4 g00506179 Show/hide table
Illustration 5 g00506180 - Disconnect hose assemblies (7) and (8).
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Illustration 6 g00506181 - Disconnect wire harness (10) from payload pressure sensor (9) at the electrical connection.
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Illustration 7 g00506196 - Use a suitable lifting device and a hoist in order to support the weight of suspension cylinder (1).
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Illustration 8 g00506198 - Remove six bolts (12), the washers, and plate (11) from the top of suspension cylinder (1).
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Illustration 9 g00506199 Show/hide table
Illustration 10 g00506200 - Remove plate (13) and pin (14).
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Illustration 11 g00506201 - Remove two bolts (15) and the washers in order to remove plate (16).
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Illustration 12 g00506202 - Remove four bolts (17) in order to remove charging valve (18) and the O-ring seals.
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Illustration 13 g00506224 Show/hide table
Illustration 14 g00506225 Note: Plug pressure ports (19) before lowering suspension cylinder (1). If pressure ports (19) are not plugged, the oil from suspension cylinder (1) will drain from pressure ports (19).
- Use the hoist in order to position suspension cylinder (1) in the horizontal position. The weight of suspension cylinder (1) is
400 kg (880 lb) . - Disconnect hose assembly (20) and hose assembly (21).
- Remove six bolts (24), the washers, and plate (25).
- Remove plate (22) and pin (23) (not shown).
- Remove suspension cylinder (1). The weight of suspension cylinder (1) is
400 kg (880 lb) .
Note: The following procedure illustrates the removal of the right suspension cylinder. This procedure can also be used for the removal of the left rear suspension cylinder.
Note: Cleanliness is an important factor. Before the removal procedure, the exterior of the component should be thoroughly cleaned. This will help to prevent dirt from entering the internal mechanism.
Note: Put identification marks on all hose assemblies, on all tube assemblies and on all wire harnesses for installation purposes. Plug all hose assemblies and all tube assemblies. This helps to prevent fluid loss and this helps to prevent contaminants from entering the system.
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| Illustration 1 | g00506167 |
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| Illustration 2 | g00506168 |
