ASE Manual Drive Train and Axles Flashcards
6 cards from real ASE practice questions. Tap to flip, then mark Knew It or Still Learning — missed cards come back until you master them.
Read the first 6 ASE Manual Drive Train and Axles flashcards as text
A manual transmission grinds when shifting into 2nd gear but all other gear changes are smooth. What is the MOST likely cause?
Answer: Faulty 2nd gear synchronizer assembly
Grinding specific to one gear indicates the synchronizer for that gear is worn and cannot match shaft speeds before engagement.
A technician notices a manual transmission is hard to shift into any gear when the engine is running but shifts freely with the engine off. What component is MOST likely at fault?
Answer: Clutch not fully releasing (dragging clutch)
A dragging clutch does not fully disengage the input shaft from the engine, keeping the gearset spinning and making engagement into any gear difficult.
What is the function of the pilot bearing or bushing in a manual transmission system?
Answer: It supports the front of the transmission input shaft in the crankshaft
The pilot bearing or bushing supports the tip of the transmission input shaft inside the crankshaft, keeping it aligned when the clutch is released.
A rear-wheel-drive vehicle vibrates at highway speeds but the vibration disappears when the driver lightly applies the brakes. What is the MOST likely cause?
Answer: Worn universal joint in the driveshaft
A worn or loose universal joint produces a vibration that changes under load; lightly braking shifts the driveline load, altering the phase angle and temporarily reducing the vibration.
What is the purpose of the clutch release bearing (throw-out bearing)?
Answer: It allows the non-rotating clutch fork to apply force to the spinning pressure plate fingers
The release bearing is a thrust bearing that contacts the spinning pressure plate diaphragm spring fingers while the clutch pedal is depressed, allowing stationary fork force to release the rotating assembly.
During a clutch replacement, a technician finds the flywheel surface has heat cracks and hard spots. What is the recommended repair?
Answer: Resurface the flywheel if within specifications or replace it
Resurfacing removes heat cracks and hard spots if the flywheel is within minimum thickness; otherwise replacement is required to ensure proper clutch engagement and heat dissipation.