By keeping records, mechanics try to find problems before they occur. This way, they can work on equipment before it breaks down and factory production is interrupted. Maintenance mechanics must be able to spot minor problems. They must then try to correct problems before they become major. Computerized maintenance management, vibration analysis techniques, and self-diagnostic systems make it easier to do this.
Some new machines have self-diagnostic equipment.
These show the cause of a problem. In some cases, these features can alert the mechanic to potential trouble spots before symptoms develop. After diagnosing the problem, the mechanic takes apart the equipment. They then repair or replace the necessary parts. The final step is to test the machine to make sure it is running smoothly.