ASE T3 DRIVETRAIN COMPREHENSIVE
CERTIFICATION EVALUATION VERIFIED
QUESTIONS AND FULL SOLUTIONS
●● 2. A manual shift transmission slips out of 5th gear. The MOST
likely cause of the problem is:
A. Broken detent spring
B. Too much shaft and gear spline wear
C. Worn countershaft bearings
D. A chipped countershaft drive gear
Answer: A. Broken detent spring
●● 3. The shift lever on a single countershaft transmission is hard to
move. Which of these is the MOST likely cause?
A. Bent shaft rails
B. Galled sliding clutch gears
C. Worn detent springs
D. Too much mainshaft gear and end-play
Answer: B. Galled sliding clutch gears
●● 4. In a transmission that has been taken apart, all of the bearings are
excessively worn. Technician A says the cause could be moisture in the
,lubricant. Technician B says the cause could be too high an operating
temperature. Who is right?
A. Tech A only
B. Tech B only
C. Both tech A & B
D. Neither A or B
Answer: C. Both technicians are right
●● 5. A truck with a high-torque, low-rpm engine exhibits a great deal of
gear noise, as well as wear of the splines on various drivetrain parts. The
truck uses a rigid disc clutch. All the U-joint angles are acceptable. The
MOST likely cause of this problem is that the:
A. Driver abuses the clutch by releasing it too rapidly
B. Engine produces torsional vibration, which should be removed from
the drive train by using a dampened disc clutch
C. Engine mounts are worn
D. Engine rating is such that the transmission requires the use if an oil
cooler
Answer: B. Engine produces torsional vibration, which should be
removed from the drive train by using a dampened disc clutch
●● 6. A truck fleet presently uses transmissions with an overdrive top
gear ratio. It wishes to convert its trucks to the use of direct-drive
transmissions. In order to get approximately the same number of engine
revolutions per mile in top gear, the company would have to:
, A. convert the gearing in its rear axles to a higher (numerical) ratio
B. convert the gearing in its rear axles to a lower (numerical) ratio
C. it need not convert (the same rear axle ratio will produce the same
engine revolutions per mile)
D. convert to lower-profile tires (which would turn more revolutions per
mile)
Answer: B. convert the gearing in its rear axles to a lower (numerical)
ratio
●● 7. Which one of the following operating conditions does NOT
indicate to the technician that the truck would operate more reliably with
a transmission oil cooler?
A. truck is rated at 350 hp
B. truck has a power rating of 450 hp
C. truck cab has the maximum number of aerodynamic devices to
smooth air flow
D. truck normally cruises in an overdrive ratio of 0.85:1
Answer: A. truck is rated a 350 hp
●● 8. A hydraulic clutch slave cylinder is being replaced.
What should the technician do first?
A. disconnect the clutch pedal pushrod
B. remove the slave cylinder from its mounting
C. disconnect the hydraulic line
CERTIFICATION EVALUATION VERIFIED
QUESTIONS AND FULL SOLUTIONS
●● 2. A manual shift transmission slips out of 5th gear. The MOST
likely cause of the problem is:
A. Broken detent spring
B. Too much shaft and gear spline wear
C. Worn countershaft bearings
D. A chipped countershaft drive gear
Answer: A. Broken detent spring
●● 3. The shift lever on a single countershaft transmission is hard to
move. Which of these is the MOST likely cause?
A. Bent shaft rails
B. Galled sliding clutch gears
C. Worn detent springs
D. Too much mainshaft gear and end-play
Answer: B. Galled sliding clutch gears
●● 4. In a transmission that has been taken apart, all of the bearings are
excessively worn. Technician A says the cause could be moisture in the
,lubricant. Technician B says the cause could be too high an operating
temperature. Who is right?
A. Tech A only
B. Tech B only
C. Both tech A & B
D. Neither A or B
Answer: C. Both technicians are right
●● 5. A truck with a high-torque, low-rpm engine exhibits a great deal of
gear noise, as well as wear of the splines on various drivetrain parts. The
truck uses a rigid disc clutch. All the U-joint angles are acceptable. The
MOST likely cause of this problem is that the:
A. Driver abuses the clutch by releasing it too rapidly
B. Engine produces torsional vibration, which should be removed from
the drive train by using a dampened disc clutch
C. Engine mounts are worn
D. Engine rating is such that the transmission requires the use if an oil
cooler
Answer: B. Engine produces torsional vibration, which should be
removed from the drive train by using a dampened disc clutch
●● 6. A truck fleet presently uses transmissions with an overdrive top
gear ratio. It wishes to convert its trucks to the use of direct-drive
transmissions. In order to get approximately the same number of engine
revolutions per mile in top gear, the company would have to:
, A. convert the gearing in its rear axles to a higher (numerical) ratio
B. convert the gearing in its rear axles to a lower (numerical) ratio
C. it need not convert (the same rear axle ratio will produce the same
engine revolutions per mile)
D. convert to lower-profile tires (which would turn more revolutions per
mile)
Answer: B. convert the gearing in its rear axles to a lower (numerical)
ratio
●● 7. Which one of the following operating conditions does NOT
indicate to the technician that the truck would operate more reliably with
a transmission oil cooler?
A. truck is rated at 350 hp
B. truck has a power rating of 450 hp
C. truck cab has the maximum number of aerodynamic devices to
smooth air flow
D. truck normally cruises in an overdrive ratio of 0.85:1
Answer: A. truck is rated a 350 hp
●● 8. A hydraulic clutch slave cylinder is being replaced.
What should the technician do first?
A. disconnect the clutch pedal pushrod
B. remove the slave cylinder from its mounting
C. disconnect the hydraulic line
