ASE A3 Manual Drive Train and Axles Practice Tests: 3 Practice Tests and 150 Questions
A3
150
Clutch Diagnosis and Repair | Clutch noise, slip, chatter and release problems, linkage and hydraulics, release and pilot bearings, flywheels and mounts (16%)
Transmission Diagnosis and Repair | Noise, hard shifting and jumping out of gear, shift linkage, synchronizers, shafts, gears, endplay and sensors (17%)
Transaxle Diagnosis and Repair | FWD transaxle shifting, seals, removal, synchronizers, differential, bearing preload, fluid and electrical (17%)
Drive Shaft/Half-Shaft and U-Joint/CV Joint Diagnosis and Repair | Driveshaft vibration, U-joint phasing and working angles, CV joints and boots, balance, runout and wheel bearings (13%)
Drive Axle Diagnosis and Repair | Ring and pinion setup, backlash, pinion depth and preload, tooth patterns, limited slip and locking differentials, axle shafts (17%)
Four-Wheel Drive/All-Wheel Drive Component Diagnosis and Repair | Transfer cases, hubs and front axle engagement, AWD couplings, shift systems, fluids and tire matching (20%)
Drive Axle Diagnosis and Repair
A ring and pinion tooth contact pattern shows heavy contact near the flank (root) of the teeth on both drive and coast sides. Backlash is within specification. What adjustment is needed?
Increase backlash
Move the pinion away from the ring gear (reduce pinion depth)
Move the pinion closer to the ring gear
Increase pinion bearing preload
B
Flank contact means the pinion is too deep, sitting too close to the ring gear centerline. Changing the pinion depth shim to move it away brings the pattern up toward the center of the tooth. Backlash moves the pattern toward the toe or heel, moving the pinion closer makes it worse, and preload doesn't set depth.
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Course Content
Supporting Resources
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ASE A3 Manual Drive Train and Axles Certification – Practice Test #1
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ASE A3 Manual Drive Train and Axles Certification – Practice Test #2
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Exam Mode: ASE A3 Manual Drive Train and Axles Certification – Practice Test #3
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