Refer to the following warnings for all inspections and tests of the axles, differential, and brakes. If the source of the problem is not determined, perform the inspections and tests. Perform the inspections and tests in sequential order.
When you are analyzing a system for poor performance, remember that proper maintenance, visual inspection, correct lubrication, correct oil flow, and correct oil pressure are necessary for correct operation.
- Move the machine to a smooth, horizontal location that is away from operating machines and away from personnel.
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Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine. To prevent possible injury, perform the procedure that follows before testing and adjusting the power train. |
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Sudden movement of the machine or release of oil under pressure can cause injury to persons on or near the machine. To prevent possible injury, perform the procedure that follows before testing and adjusting the brake system. |
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Personal injury can result from hydraulic oil pressure and hot oil. Hydraulic oil pressure can remain in the hydraulic system after the engine has been stopped. Serious injury can be caused if this pressure is not released before any service is done on the hydraulic system. Make sure all of the attachments have been lowered, oil is cool before removing any components or lines. Remove the oil filler cap only when the engine is stopped, and the filler cap is cool enough to touch with your bare hand. |
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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, "Caterpillar Dealer Service Tool Catalog" for tools and supplies suitable to collect and contain fluids on Caterpillar products. Dispose of all fluids according to local regulations and mandates. |
- Place the transmission control lever to the NEUTRAL position.
Note: Permit only one operator on the machine. Keep all other personnel away from the machine or in the operator's sight.
- Engage the parking brake.
- Lower the bucket or the attachments to the ground.
- Stop the engine.
- Move the control levers through the full range of travel. This will relieve any pressure that may be present in the implement hydraulic system.
- Depress the brake pedal repeatedly. This will relieve any pressure that may be present in the brake hydraulic system.
- Place wheel blocks in front of the wheels and behind the wheels.
- Slowly loosen the hydraulic tank filler cap in order to release the pressure.
- Tighten the hydraulic tank filler cap.
Troubleshooting can be complex. Refer to Testing and Adjusting, "Axle, Differential and Brake Troubleshooting" for a list of possible problems and corrections.
This list of possible problems and possible corrections will only provide an indication of the location of a problem and the repairs that are required. Remember that a problem is not necessarily caused by one part, but by the relation of one part with other parts. This list can not provide all possible problems and corrections. Service personnel must find the problem and the source of the problem. Then, complete the necessary repairs.