Maintenance Technician Interview Questions UK: 8 Real Questions and What Interviewers Want

Applying for a Maintenance Technician job in the UK? Here is what you are likely to be asked. These questions come from our Maintenance Technician question bank of 16 questions, written for UK employers at junior level.

Eight Maintenance Technician interview questions, and what the interviewer is thinking

1. What does a planned preventive maintenance task on a piece of production equipment typically involve, and how do you make sure it is done properly?

Why they ask: To check you understand routine maintenance and follow a task sheet rather than cutting corners.

2. Talk me through how you would safely isolate a machine before carrying out maintenance on it.

Why they ask: Isolation is the most critical safety routine for a maintenance technician and employers test it in almost every interview.

3. Which hand tools and measuring instruments do you use most on a maintenance job, and how do you make sure they are accurate and safe?

Why they ask: To confirm practical competence with tools and awareness of calibration and PUWER duties.

4. What do you know about lubrication, and what can go wrong if it is done badly?

Why they ask: Poor lubrication is a major cause of bearing and gearbox failure, so employers want a technician who respects it.

5. What are the common causes of a conveyor stopping unexpectedly, and how would you work through diagnosing it?

Why they ask: To test logical fault-finding on common line equipment.

6. A machine operator tells you the machine is making a strange noise but is still running and the line is busy. What do you do?

Why they ask: To see whether you balance production pressure against early fault detection and safety.

7. Tell me about a time you fixed a fault on a machine or vehicle and what you learned from it.

Why they ask: To see practical fault-finding in a real example and whether you reflect on it.

8. Why do you want to be a maintenance technician, and what do you think makes a good one?

Why they ask: To check motivation, realistic expectations and understanding of the role.

A sample answer to question 1

What does a planned preventive maintenance task on a piece of production equipment typically involve, and how do you make sure it is done properly?

A planned preventive task starts with the work order from the CMMS, which tells me the asset, the frequency and the checklist. I isolate and lock off the machine under the permit or site procedure, then work through the checks: lubrication points, belt tension and wear, guards and interlocks, fasteners, filters, leaks and unusual noise or heat. I use the right tools and the correct grease or oil grade, because mixing types can damage bearings. I record measurements and anything I find, even small things like a weeping seal, so the planner can schedule a follow-up before it fails. Before handing back I refit all guards, remove my lock, test-run with the operator and confirm the machine is clean and tidy. Finally I close the work order with accurate notes and the time taken. Skipping the paperwork wastes the task, because the history is what shows trends.

Common mistake to avoid: Signing off tasks not fully completed; forgetting to remove locks or refit guards

Want the rest?

Full model answers, key points and common mistakes for all 16 questions are on the Maintenance Technician interview questions page. The first five are free, no sign-up needed.