Maintenance & Troubleshooting Techniques Flashcards
7 cards from real ATP 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 & Troubleshooting Techniques flashcards as text
When performing root cause analysis on a recurring system failure, which approach is most effective?
Answer: Use the 5-Whys technique to trace the failure to its origin
The 5-Whys technique systematically drills down from symptom to root cause, preventing recurrence rather than just treating symptoms.
A technician notices intermittent faults that do not repeat during bench testing. The best next step is to:
Answer: Perform stress testing under simulated operational conditions
Intermittent faults often only manifest under specific temperature, load, or vibration conditions that must be replicated during stress testing.
Which type of maintenance strategy involves monitoring actual equipment condition to schedule service only when needed?
Answer: Condition-based maintenance
Condition-based maintenance uses real-time sensor data or inspection findings to trigger service only when degradation thresholds are reached.
When troubleshooting an electrical circuit, a technician measures voltage at the output terminal but the load does not operate. The most likely cause is:
Answer: An open circuit between the terminal and load
Voltage present at the terminal but no current through the load indicates an open circuit (break or disconnection) between those two points.
In a hydraulic system showing low output pressure, which component should be checked first?
Answer: Pump pressure relief valve setting
An incorrectly adjusted or stuck-open pressure relief valve is a primary cause of low system pressure in hydraulic circuits.
Which documentation practice best supports future troubleshooting efforts after completing a maintenance task?
Answer: Logging fault symptoms, diagnostic steps taken, root cause, and corrective action
Comprehensive maintenance records including symptoms, diagnostics, root cause, and corrective action create a traceable history that accelerates future fault isolation.
A pneumatic system fails to build pressure despite the compressor running. After confirming compressor output is normal, the next logical step is to:
Answer: Check for leaks using an ultrasonic leak detector or soap solution
Normal compressor output with no system pressure buildup strongly indicates downstream leakage that must be located and sealed.