COVER 5L7225 - Caterpillar

Personal injury or death can result from sudden machine movement.Sudden movement of the machine can cause injury to persons on or near the machine.To prevent injury or death, make sure that the area around the machine is clear of personnel and obstructions before operating the machine.
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.
Escaping fluid under pressure, even a pinhole size leak, can penetrate body tissue, causing serious injury, and possible death. If fluid is injected into your skin, it must be treated immediately by a doctor familiar with this type of injury.Always use a board or cardboard when checking for a leak.
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 Tools and Shop Products Guide" for tools and supplies suitable to collect and contain fluids on Caterpillar products.Dispose of all fluids according to local regulations and mandates.
Operational Checks
Operate the machine in each direction and in all speeds. Note the noises that are not normal and find the sources of the noises. If the machine is not operating correctly, refer to the "Troubleshooting Problem List" below.Make sure that you check for any service codes that have been generated before troubleshooting a problem.Reference: For more information on checking for service codes with the Caterpillar Monitoring System, refer to the Service Manual module Testing and Adjusting, "Using Caterpillar Monitoring System to Determine Service Codes" for the machine that is being serviced.Reference: For more information on checking for service codes with the Caterpillar Electronic Technician (ET), refer to the Service Manual module Testing and Adjusting, "Using Caterpillar Electronic Technician (ET) to Determine Service Codes" for the machine that is being serviced.Reference: For additional information about troubleshooting service codes, refer to the Service Manual module Testing and Adjusting, "Troubleshooting Faults with Service Codes".Troubleshooting Problem List
There is constant noise in the differential.
Noise occurs in the differential at different intervals.
Noise only occurs during turns.
Lubricant is leaking.
The drive wheels do not turn but the universal joint turns.Troubleshooting
Note: In the following section, when components are referenced with a number, refer to the schematic in Illustration 1.Reference: For additional information about troubleshooting the power train electronic control module (ECM), refer to the Service Manual module Testing and Adjusting, "Troubleshooting Faults with Service Codes" for the machine that is being serviced.Probable Causes of Power Train Problems
Problem: There is constant noise in the differential.Probable causes:
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