Maintenance & Troubleshooting Flashcards

A conveyor belt is tracking to one side and riding off the pulley. What is the FIRST corrective action to take?

Answer: Check and adjust the tail pulley alignment

Belt tracking problems are most commonly caused by misaligned pulleys, so adjusting the tail pulley is the first corrective step.

Which maintenance strategy involves monitoring equipment condition in real time to predict failures before they occur?

Answer: Predictive maintenance

Predictive maintenance uses condition monitoring data (vibration, temperature, oil analysis) to forecast failures before they happen.

An electric motor runs hot and trips its overload protector repeatedly. Which fault should be investigated FIRST?

Answer: Blocked ventilation or cooling airflow

Blocked ventilation prevents heat dissipation and is the most common cause of motor overheating and nuisance overload trips.

What does a high vibration reading in the axial direction on a rotating machine most likely indicate?

Answer: Misalignment

Axial vibration is a classic signature of shaft misalignment between coupled machines.

A pneumatic cylinder moves sluggishly and its speed has decreased. The most likely cause is:

Answer: Worn or damaged piston seals

Worn piston seals allow air to bypass the piston, reducing the effective force and slowing the cylinder stroke.

Which tool is used to measure the internal diameter of a bore to check for wear beyond acceptable tolerances?

Answer: Telescoping gauge with outside micrometer

A telescoping gauge captures the bore diameter and is then measured with an outside micrometer to obtain a precise reading.

During a troubleshooting process, after identifying the root cause of a failure, what is the NEXT logical step?

Answer: Develop and implement a corrective action

After identifying the root cause, the technician must develop and implement a corrective action to resolve the problem before returning equipment to service.