ASE Practice Test (A3: Manual Drive Train & Axles) 2

Question 1

A manual transmission grinds when shifting into 3rd gear but shifts smoothly into all other gears. The synchronizer ring for 3rd gear is suspected. What does the synchronizer do?

Accepted Answer

Matches the speed of the gear to the main shaft before engagement

Answer

Prevents the gear from engaging until the driver fully depresses the clutch

Answer

Reduces gear noise by dampening gear mesh vibration

Answer

Locks the gear to the main shaft permanently when selected

Question 2

A technician is checking a four-wheel-drive transfer case and finds the chain stretched beyond specification. What symptoms would the driver most likely report?

Accepted Answer

A slapping or rattling noise from the transfer case during acceleration and deceleration

Answer

Difficulty shifting between 2WD and 4WD

Answer

Transfer case fluid leaking from the front output seal

Answer

Binding during low-speed turns in 4WD

Question 3

During a CV axle boot inspection, a technician finds the outer boot is cracked and has thrown grease onto the inside of the wheel well. What is the MOST important next step?

Accepted Answer

Inspect the CV joint for wear and damage before deciding on repair

Answer

Replace only the boot and repack with fresh grease

Answer

Clean the grease from the wheel well and monitor for leaks

Answer

Replace the entire CV axle shaft assembly

Question 4

A rear-wheel-drive vehicle with a solid rear axle exhibits a clunking noise only on initial acceleration from a stop and not during driving. What is the MOST likely cause?

Accepted Answer

Excessive ring and pinion backlash in the differential

Answer

Worn differential pinion bearings

Answer

Worn universal joint (U-joint)

Answer

Loose or missing axle retaining bolts

Question 5

When performing a clutch replacement, a technician notices the flywheel friction surface has slight heat cracks (heat checks) but is within the resurfacing specification. Should the flywheel be resurfaced?

Accepted Answer

Yes, heat cracks indicate metal stress and the surface should be resurfaced or replaced

Answer

No, heat cracks within specification are acceptable and resurfacing is not needed

Answer

No, resurfacing will make the cracks worse by exposing softer metal

Answer

Yes, but only if the customer is also replacing the clutch disc

Question 6

A limited-slip differential (LSD) equipped vehicle exhibits chattering during low-speed turns. What is the MOST likely cause and correct fix?

Accepted Answer

Incorrect gear oil — standard hypoid gear oil used instead of friction modifier additive

Answer

Worn spider gears requiring differential rebuild

Answer

Worn axle bearings causing excess movement in the differential

Answer

Incorrect ring and pinion backlash setting