Use the maintenance system as evidence, not paperwork you fill in after the real job is over.
What to understand
A good CMMS history turns tomorrow’s breakdown into a shorter job. Search the asset history before disassembling a machine when time allows.
Start by turning the idea into an observable question. What should the machine, component, person, or process be doing at this moment, and what evidence would prove that it is doing it? Defining normal first gives your troubleshooting a reference point and prevents you from reacting to the first unusual thing you notice.
How to apply it
Write fault descriptions that another technician can understand months later. Include the symptom, cause, action, parts used, measurements, and verification.
Apply the idea one boundary at a time. Confirm one condition, record what you learned, and only then move to the next point in the chain. This makes your work easier to explain and greatly reduces the temptation to swap parts or change several variables at once.
What good work looks like
Distinguish corrective work from improvement work. “Replaced fuse” may restore production; “found cable rubbing on frame and rerouted it” explains why the fuse will not keep failing.
Good maintenance work leaves a trail of evidence. Measurements, alarm times, verified states, photos where permitted, and clear work-order notes let another technician understand why you made the repair and whether the same failure mechanism returns later.
Field scenario
A pump has tripped three times in two weeks. The work-order history says only “reset overload” on the previous two jobs. You measure current and discover one phase is intermittently dropping because of a loose terminal. Better documentation would have turned the third call into a planned inspection rather than another surprise breakdown.
After the immediate repair, capture the point in the sequence where the expected condition was lost and what evidence proved the cause. That small discipline turns a one-time fix into knowledge the whole maintenance team can reuse.
Field checklist
Common mistakes to avoid
Writing “fixed” with no diagnostic information
Copying the operator complaint as the repair description
Leaving temporary bypasses undocumented
Using personal notes instead of updating the shared system
Ask yourself: If this machine failed again on the next shift, what information could I leave behind that would make the next diagnosis faster and safer?
90-day action
Before moving on, choose one task from this chapter and perform it during normal work. Record what you learned in your plant notebook. The value of the first 90 days comes from turning concepts into repeatable behavior, not from reading alone.
CHAPTER 6