General guidance
This Resource Centre provides general guidance only. Always follow the equipment manufacturer’s instructions, the product technical data sheet and your site’s safe system of work. Isolate stored energy before maintenance. For safety-critical, regulated or uncertain applications, ask a competent engineer or the product manufacturer to confirm the specification.
Replacing the failed part restores operation. Finding why it failed protects the next part.
- Make the equipment safe and preserve evidence.
- Describe the failure without guessing the cause.
- Record operating time, load, speed, temperature and recent changes.
- Photograph the part in position and after removal.
- Compare with a known-good component or baseline.
- Review installation, alignment, lubrication, contamination and environment.
- Separate initiating damage from secondary damage.
- Identify the most likely cause and evidence against alternatives.
- Define a corrective action that controls the cause.
- Verify after return to service and update the maintenance plan.
If the same fault returns, reassess the diagnosis rather than repeating the same repair.
Need help sourcing the item?
Send the manufacturer, reference, photographs and operating details.