Proactive Maintenance Strategies Flashcards

A motor coupling shows a rising 1X and 2X axial vibration after a rebuild. What proactive correction is most appropriate?

Answer: Correct the shaft misalignment with precision alignment

Elevated 1X/2X axial vibration typically indicates misalignment, which precision alignment removes at the source.

How does operator-driven reliability (ODR) support proactive maintenance?

Answer: Operators clean, inspect, and tighten to catch and prevent defects early

Basic care by operators keeps equipment in its base condition and stops defects from forming.

Which statement best distinguishes proactive maintenance from preventive maintenance?

Answer: Preventive restores condition on a schedule; proactive removes the causes of degradation

Preventive tasks restore or replace on time, while proactive tasks eliminate the root causes of failure.

An over-greased bearing is running hot. What proactive step best prevents a repeat?

Answer: Set grease quantity and frequency from calculation and use ultrasound-assisted greasing

Calculated grease volumes and ultrasonic feedback prevent over-lubrication, a common cause of bearing heat and failure.

Which is the BEST example of using design for reliability as a proactive strategy?

Answer: Specifying sealed bearings and better access for maintenance during the project phase

Reliability built into design and specifications removes failure causes before the asset is installed.

A soft foot condition is found while aligning a pump. Why must it be corrected first?

Answer: It distorts the machine frame and makes alignment unstable

Soft foot distorts the casing when bolts are tightened, which causes bearing stress and inconsistent alignment.

Which practice helps prevent maintenance-induced failures after a repair?

Answer: Using standard work procedures with torque values and quality checks

Standard procedures and quality checks reduce human error introduced during maintenance.