General steps for excavator faults and diagnosis

A. Collect information

If possible, talk directly to the driver.

2. Describe the ancient fault phenomenon precisely.

3. Identify the phenomenon and its occurrence time.

4. Find out under what circumstances the malfunction occurred.

5. Check the maintenance history records of excavators.

6. Find out all the circumstances before and after the fault occurred as well as the sequence in which they appeared.

B. Check for operational issues

1. Confirm whether the excavator is working properly.

2. Confirm whether the problem might stem from the engine or the hydraulic system.

3. If possible, reset the condition where the fault occurred and verify whether the fault recurs.

C. Determine the possible causes

First, fix all the faults in the activity diagnostic codes.

2. Consider which part might cause the problem to occur

3. Check the corresponding suggestions in the maintenance manual.

D. Narrow down the scope

Refer to the information collected from the driver.

2. Check the diagnostic code of the record.

3. Consider whether there is a common cause if more than one fault phenomenon occurs.

E. Check the subsystems

1. Eliminate preconceived notions.

2. First, detect the possible causes of the fault.

3. Conduct a visual inspection.

4. Collect the inspection steps in the maintenance manual.

5. Joint inspection is extremely important. Check every pin and socket, as well as every section of wire, to see if they are properly connected.