Failure history should directly influence what PM tasks exist and how often they are done.
In many factories, For each recurring failure, ask whether an existing PM is supposed to prevent or detect it. The result is a record that exists for compliance or habit but contributes very little to faster troubleshooting or better reliability.
Chapter focus: Turn this topic into a repeatable logging habit that survives shift pressure and creates usable history.
Compare failure modes with PM tasks
For each recurring failure, ask whether an existing PM is supposed to prevent or detect it. The weakness is easy to miss on the day of the repair because everyone still remembers the context. Weeks later the memory is gone, and the record has to stand on its own.
Consider this situation: If yes, the task may be ineffective, unclear, or performed at the wrong interval. A stronger habit is to Use the log as evidence for PM review. This gives another technician a usable starting point and gives the team information that can be compared across repeated events.
Remove no-value PM
A task repeated for years without finding defects may still be necessary, but it deserves review. When this is not documented well, the maintenance team often pays twice: once during the original breakdown and again when the same failure returns.
Imagine that History can reveal which inspections actually detect developing failures. The response is to Reallocate effort toward evidence-based tasks. The objective is not a diary of every movement; it is enough evidence to understand the state, the reasoning, and the decision that followed.
Practical check: Look at three recent records related to remove no-value pm. Can a different technician understand the facts without asking the original author? If not, identify the one missing field or wording rule that would fix the problem.
Adjust intervals from recurrence
If failures appear just before a scheduled inspection, shorten or redesign the interval. Good maintenance records are designed around reproducibility. Another competent person should be able to understand what was observed, what was tested, and why the final action made sense.
A useful example is this: If components remain stable for long periods, condition-based methods may replace fixed replacement. Make the rule explicit: Use trends rather than one event. Once the team applies the same rule consistently, search, handover, and reliability analysis become much easier.
Field Example
Suppose a conveyor stops with a motor overload trip. The weak record says only that the machine stopped and was reset. A useful record identifies the asset, captures the first alarm or physical symptom, states the decisive checks, records the confirmed or suspected cause, describes the action, and explains how normal operation was verified. If the cause is not known, the record lists what was ruled out and leaves a visible follow-up rather than inventing certainty.
This style of entry pays for itself when the event returns. The next technician can compare the new symptom with the previous evidence, confirm whether conditions match, and skip checks that were already shown to be irrelevant. For supervisors and engineers, the same structured fields make the event countable and comparable. One short, disciplined record therefore supports troubleshooting, handover, analysis, and improvement at the same time.
Chapter Action Checklist
• Review the current practice related to compare failure modes with pm tasks.
• Choose one wording or field standard from this chapter and pilot it this week.
• Find one recent record that would have been easier to troubleshoot with better evidence.
• Agree how this information will be reviewed or analyzed, not merely stored.
Figure. Failure history should change the preventive-maintenance program and then be measured again.