AUT 128 Final Exam Graded A+
A cyclic vibration that comes and goes between 45 and 60 mph (72 to 97 kph) is being
discussed. Technician A says the problem may be caused by an out-of-balance tire and
wheel. Technician B says the Rzeppa CV joint may be bad. Who is correct? -
ANSWER-neither a nor b
A FWD vehicle that makes a clunking noise when the automatic transmission is shifted
into gear is being diagnosed. Technician A says the problem could be excessive play in
an inner or outer CV joint. Technician B says the noise could be produced by excessive
backlash in the differential gears and transmission. Who is correct? - ANSWER-both a
and b
A mirrorlike shine on the pressure plate or a glazed clutch facing that results in chatter
could be caused by ______. - ANSWER-liquid leaking onto the clutch
A rough growling noise occurs when the vehicle is moving and the transmission is in
forward or reverse gears. The noise is not heard when the transmission is in neutral.
Technician A says the output or main shaft bearings may be faulty. Technician B says
the pilot bearing may be faulty. Who is correct? - ANSWER-a only
An engine support fixture is used to hold the engine in place while removing a ______. -
ANSWER-FWD transaxle
Driveshafts are made of ______. - ANSWER-all answers are correct
Fixed-tripod-type CV joints are being discussed. Technician A says the fixed tripod joint
cannot be removed from the drive shaft or disassembled because of the way it is
manufactured. Technician B says the fixed tripod joint has less angular capability than a
Rzeppa-type joint. Who is correct? - ANSWER-a only
In a five-speed manual transmission/transaxle, an idler gear is used for _____ gear. -
ANSWER-reverse
In RWD applications with IRS, the ______ CV joint is a plunge type. - ANSWER-both
"inboard" and "outboard"
Insufficient clutch pedal clearance results in ______. - ANSWER-premature release
bearing failure
Interaxle differentials are being discussed. Technician A says the interaxle differential is
located inside the front axle housing. Technician B says the interaxle differential is
located inside the rear axle housing. Who is correct? - ANSWER-neither a nor b
Part-time 4WD is found on what type of vehicle? - ANSWER-full-size pickup truck
, Self-shifting manual transmissions are being discussed. Technician A says these
transmissions use planetary gearsets and torque converters like conventional automatic
transmissions. Technician B says these transmissions are manual transmissions that
shift gears using a computer-controlled actuator connected to the shift forks and a
clutch actuator. Who is correct? - ANSWER-b only
Shifter linkages are being discussed. Technician A says the shifter interlock prevents
the selection of more than one gear during shifting. Technician B says when one of the
shift rails is moved by the shifter, the interlock pins hold the other shift rails in their
neutral position. Who is correct? - ANSWER-both a and b
Technician A checks ball bearings by spin testing with an air blower. Technician B
cleans and lubricates the bearings then spins them by hand while checking for
roughness or vibration. Who is correct? - ANSWER-b only
Technician A checks the condition of blocking rings by measuring the clearance
between the blocking ring and the face of the gear. Technician B visually inspects the
blocking ring for worn clutch teeth and smooth internal surfaces. Who is correct? -
ANSWER-both a and b
Technician A checks the engine and transmission mounts by running the engine at
1,500 rpm and with the park brake on lightly applying the clutch, while an assistant
observers the movement of the engine and transmission. Technician B checks the
mounts by applying 100 ft./lbs. of torque to the drive shaft with a torque wrench while
measuring the movement of the engine with a dial indicator. Who is correct? -
ANSWER-a only
Technician A checks the flywheel for runout [warpage] using a dial indicator. Technician
B uses a straightedge to check the pressure plate for warpage. Who is correct? -
ANSWER-both a and b
Technician A says an interaxle differential can lower performance in poor traction
conditions. Technician B says many 4WD vehicles use an interaxle differential in the
transfer case to eliminate driveline windup during turns. Who is correct? - ANSWER-
both a and b
Technician A says helical cut gears have teeth cut at a 90-degree angle to the side of
the gear. Technician B says helical gears run without creating gear whine. Who is
correct? - ANSWER-b only
Technician A says part-time 4WD vehicles do not have an interaxle differential.
Technician B says part-time 4WD vehicles do not have a transfer case. Who is correct?
- ANSWER-a only
A cyclic vibration that comes and goes between 45 and 60 mph (72 to 97 kph) is being
discussed. Technician A says the problem may be caused by an out-of-balance tire and
wheel. Technician B says the Rzeppa CV joint may be bad. Who is correct? -
ANSWER-neither a nor b
A FWD vehicle that makes a clunking noise when the automatic transmission is shifted
into gear is being diagnosed. Technician A says the problem could be excessive play in
an inner or outer CV joint. Technician B says the noise could be produced by excessive
backlash in the differential gears and transmission. Who is correct? - ANSWER-both a
and b
A mirrorlike shine on the pressure plate or a glazed clutch facing that results in chatter
could be caused by ______. - ANSWER-liquid leaking onto the clutch
A rough growling noise occurs when the vehicle is moving and the transmission is in
forward or reverse gears. The noise is not heard when the transmission is in neutral.
Technician A says the output or main shaft bearings may be faulty. Technician B says
the pilot bearing may be faulty. Who is correct? - ANSWER-a only
An engine support fixture is used to hold the engine in place while removing a ______. -
ANSWER-FWD transaxle
Driveshafts are made of ______. - ANSWER-all answers are correct
Fixed-tripod-type CV joints are being discussed. Technician A says the fixed tripod joint
cannot be removed from the drive shaft or disassembled because of the way it is
manufactured. Technician B says the fixed tripod joint has less angular capability than a
Rzeppa-type joint. Who is correct? - ANSWER-a only
In a five-speed manual transmission/transaxle, an idler gear is used for _____ gear. -
ANSWER-reverse
In RWD applications with IRS, the ______ CV joint is a plunge type. - ANSWER-both
"inboard" and "outboard"
Insufficient clutch pedal clearance results in ______. - ANSWER-premature release
bearing failure
Interaxle differentials are being discussed. Technician A says the interaxle differential is
located inside the front axle housing. Technician B says the interaxle differential is
located inside the rear axle housing. Who is correct? - ANSWER-neither a nor b
Part-time 4WD is found on what type of vehicle? - ANSWER-full-size pickup truck
, Self-shifting manual transmissions are being discussed. Technician A says these
transmissions use planetary gearsets and torque converters like conventional automatic
transmissions. Technician B says these transmissions are manual transmissions that
shift gears using a computer-controlled actuator connected to the shift forks and a
clutch actuator. Who is correct? - ANSWER-b only
Shifter linkages are being discussed. Technician A says the shifter interlock prevents
the selection of more than one gear during shifting. Technician B says when one of the
shift rails is moved by the shifter, the interlock pins hold the other shift rails in their
neutral position. Who is correct? - ANSWER-both a and b
Technician A checks ball bearings by spin testing with an air blower. Technician B
cleans and lubricates the bearings then spins them by hand while checking for
roughness or vibration. Who is correct? - ANSWER-b only
Technician A checks the condition of blocking rings by measuring the clearance
between the blocking ring and the face of the gear. Technician B visually inspects the
blocking ring for worn clutch teeth and smooth internal surfaces. Who is correct? -
ANSWER-both a and b
Technician A checks the engine and transmission mounts by running the engine at
1,500 rpm and with the park brake on lightly applying the clutch, while an assistant
observers the movement of the engine and transmission. Technician B checks the
mounts by applying 100 ft./lbs. of torque to the drive shaft with a torque wrench while
measuring the movement of the engine with a dial indicator. Who is correct? -
ANSWER-a only
Technician A checks the flywheel for runout [warpage] using a dial indicator. Technician
B uses a straightedge to check the pressure plate for warpage. Who is correct? -
ANSWER-both a and b
Technician A says an interaxle differential can lower performance in poor traction
conditions. Technician B says many 4WD vehicles use an interaxle differential in the
transfer case to eliminate driveline windup during turns. Who is correct? - ANSWER-
both a and b
Technician A says helical cut gears have teeth cut at a 90-degree angle to the side of
the gear. Technician B says helical gears run without creating gear whine. Who is
correct? - ANSWER-b only
Technician A says part-time 4WD vehicles do not have an interaxle differential.
Technician B says part-time 4WD vehicles do not have a transfer case. Who is correct?
- ANSWER-a only
