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Do not check for leaks with your hands. Pin hole (very small) leaks can result in a high velocity oil stream that will be invisible close to the hose. This oil can penetrate the skin and cause personal injury. Use cardboard or paper to locate pin hole leaks. |
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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. |
When you diagnose a problem in the braking and hydraulic fan system, a visual inspection of the system is the first step. Before any tests are performed, visually inspect the entire braking and hydraulic fan system for oil leaks and for damaged parts.
Bring the machine to a stop and engage the parking brake. Then lower the bowl to the ground and stop the engine. Perform the following inspections:
- Check the oil level in the sight gauge.
- Check all oil lines and all connections for damage and for leaks.
- Inspect the braking and the hydraulic fan pump for damage and inspect the hydraulic fan motor for damage.
- Start the engine.
- Use a clear container to obtain a sample of the oil. Look for air bubbles in the oil that is in the container.
- Ensure that the fan is operating.
- Raise the bowl from the ground.
- Sit in the operator seat and fasten the seat belt.
- Release the parking brake and activate the service brakes while the machine is moving in both directions. Listen for any unusual noises. Ensure that the brakes stop the machine within an acceptable distance.
- Set the parking brake, lower the bowl to the ground, and stop the engine.