To check whether the excavator is working properly, you can perform the following steps:

Observe the operation of the excavator: In the operation process, if you find that there are abnormal conditions such as slow action, failure, flicker or even stop, you can determine that the excavator may have a fault.

Listen to abnormal sounds: If there are abnormal sounds, especially friction and wear sounds, it is necessary to judge in time.

Check the liquid level: If the liquid level is too low or too high, check the liquid level in time and handle the cause of the abnormal liquid level.

Check the air pressure: Too low air pressure may cause specific components to not work properly, such as hydraulic pumps or air brakes, so when judging the fault of the excavator, it is necessary to check whether the air pressure is normal.

Use of instrument diagnosis: For more deep-seated faults, you can use the excavator fault diagnosis instrument to diagnose.