Maintenance Awareness Flashcards
7 cards from real CPT practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 7 Maintenance Awareness flashcards as text
Which maintenance strategy is MOST cost-effective for non-critical, low-cost components that are easy to replace?
Answer: Run-to-failure (reactive) maintenance
For low-cost, easily replaced non-critical components, run-to-failure is often the most economical strategy since the cost of monitoring or preventing failure exceeds the cost of replacement.
What does a machine's 'failure mode' refer to in reliability analysis?
Answer: The specific way in which a machine or component can fail
A failure mode describes the manner in which a component ceases to perform its required function, used in FMEA to assess risk and prioritize maintenance.
Why should oil samples from gearboxes be analyzed periodically?
Answer: To detect metal particles and contamination that indicate internal wear
Oil analysis detects metallic debris, water contamination, and viscosity changes that signal internal component wear before catastrophic failure occurs.
A production operator hears a high-pitched squeal from a motor bearing. This sound most likely indicates:
Answer: Bearing lubrication failure or wear requiring immediate attention
A high-pitched squeal from a bearing is a classic sign of lubrication starvation or wear, and the bearing should be inspected or replaced promptly.
Which document would a maintenance technician consult to determine the correct lubricant type and interval for a specific machine?
Answer: The equipment manufacturer's maintenance manual or OEM specifications
The OEM maintenance manual specifies correct lubricant grades, quantities, and intervals developed and tested by the equipment manufacturer.
What is the primary risk of allowing coolant (cutting fluid) levels to drop too low in a CNC machine?
Answer: Tool overheating, accelerated tool wear, and potential workpiece damage
Cutting fluid cools the tool and workpiece; insufficient coolant causes excess heat buildup, shortening tool life and potentially ruining the workpiece.
After completing a maintenance repair, what is the recommended final step before handing the machine back to production?
Answer: Performing a functional test to verify the repair and confirm safe operation
A functional test confirms the repair was successful, all guards are reinstalled, and the machine operates safely before it is returned to production use.