EDGE AS 3690873 - Caterpillar

Know the Machine
Understand the operation of the machine. Know if the symptom is a characteristic of normal operation or if the symptom is a failure.Read the systems operation information to understand the systems of the machine. Understand the interaction between the machine systems.Understand the Symptom
Speak with the operator about the symptom. Obtain the following information:
Performance of the machine prior to the failure
First occurrence of the symptom
Operating conditions at the time of the failure
Sequence of events prior to the failure (order of the occurrences)
Troubleshooting steps that have been taken
History of repairs of the machine
Preventive maintenance of the machine
Related service information about current problems that affect the serial number of the machine
Inspect the machine, look for problems, notice any unusual odors or noisesPerform the "Visual Inspection" steps. Refer to Troubleshooting, "Machine Preparation for Troubleshooting".Verify the Symptom
When possible, safely attempt to duplicate the symptom. Operate the machine and repeat the conditions that caused the failure. Check the gauges inside the cab. Notice any unusual odors or unusual noises.Determine if the ECM has detected any faults. A diagnostic code is used to specify each detected fault.Determine Possible Causes
Use the information from the operator and your inspection. Attempt to identify a common cause if there is more than one symptom.If you troubleshoot diagnostic codes and the problem is not resolved, continue troubleshooting using the "Symptom Troubleshooting" section of this manual. Identify the component that is the most probable cause of the symptom.Test and Repair the System
Use the tests and procedures in this manual to verify the cause of the symptom. Once the cause has been identified repair the failure. Test the system again to verify that the symptom is resolved.Provide Feedback to Caterpillar
Share your troubleshooting information. After the correct repair has been performed, write a brief description about the symptom, testing, and repair of the machine. Use the form in "SIS" or "CBT" feedback for this purpose. Include your phone number or e-mail address so that you can be contacted. This feedback helps Caterpillar improve service information.