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ASE T3 Questions And Answers With Verified Solutions 100% Correct!!! Rated A+
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ASE T3 Questions And Answers With Verified Solutions 100% Correct!!! Rated A+
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ASE T3 Questions And Answers WithVerified Solutions 100% Correct!!! Rated
A+
1. The driver of a truck says he hears a grinding noise
when the transmission is in neutral and the truck is
stopped; but the noise goes away when the clutch
pedal is depressed. Which of these could be the
cause?
A. worn pilot bearing
B. worn input shaft bearing
C. worn clutch release (throwout) bearing
D. worn auxiliary transmission countershaft bearing - ANSWER✔✔1. The correct
answer is B. The noise occurs only when the input shaft is rotating. The bearing
handles the relative motion between shaft and case and thus works only when the
shaft is moving. This occurs when the truck isidling with the clutch engaged. The
noise goes away when the clutch pedal is depressed because the input shaft then
stops turning and the bearing is stationary. The other symptoms would only occur
when either the clutch is engaged or when the transmission is being shifted.
2. A manual shift transmission slips out of fifth gear. The MOST likely cause of
this problem is:
A. a broken detent spring
B. too much shaft and gear spline wear
C. worn countershaft bearings
D. a chipped countershaft drive gear - ANSWER✔✔2. The correct answer is A.
The detent ball lightly holds the gear lever in place when a shift is complete. With
a broken spring, there will be no pressure holding the ball in the detent located in
the shift rail. Vibration can easily cause the direct drive (top gear) shift collar to
slide and disengage. Answers B and D would cause grinding when shifting into
gear, while answer C would cause a whining noise.
3. The shift lever on a single countershaft transmission is hard to move. Which of
these is the MOST likely cause?
A. bent shift rails
B. galled sliding clutch gears
C. worn detent springs
,D. too much mainshaft gear end-play - ANSWER✔✔3. The correct answer is B.
Galled surfaces on the sliding clutches would make it difficult for them to slide
along the shafts and in and out of the gears. Bent shift rails and worn detent springs
would cause the transmission to slip out of gear. Too much mainshaft gear end
play would cause shifting to be next to impossible and the transmission will exhibit
a growling noise.
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. Technician A only
B. Technician B only
C. Both A and B
D. Neither A or B - ANSWER✔✔4. The correct answer is C, both technicians are
right. Bearing wear often occurs when the viscosity of the gear lube is too low.
Water dilutes the gear lube, thereby thinning it. Heat also thins the gear lube by
breaking it down chemically.
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
drivetrain by using a dampened disc clutch.
C. Engine mounts are worn.
D. Engine rating is such that the transmission requires the use of an oil cooler. -
ANSWER✔✔5. The correct answer is B. A rigid clutch cannot dampen the severe
vibrations produced by modern high torque diesels. The only other source of the
kind of vibration torque that would cause such damage would be misaligned
driveshafts, and they have been found to be OK.
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✔✔6. The correct answer is B. On vehicles with overdrive. the engine
turns more slowly than the transmission out put shaft and the driveshafts at any
given speed. With a direct drive transmission, the engine must turn at the same
speed as the driveshafts-in other words, with the same axle, faster. A numerically
lower axle, requiring fewer revolutions of the driveshafts, would be the only means
of bringing the required rpm of engine and drive shafts back down.
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✔✔7. The
correct answer is A. Any truck rated less than 400 hp is normally approved for
operation without a transmission oil cooler; only trucks of 400 hp and up require
them.
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
D. adjust clutch pedal free-play - ANSWER✔✔8. The correct answer is A. The
clutch pedal pushrod must be disconnected before servicing the slave cylinder.
Damage to the master cylinder can occur if the pedal is accidentally depressed with
the slave cylinder disconnected.
9. A 13-speed transmission exhibits wear problems in two places: the shift fork
located on the yoke bar that shifts the splitter, and the surfaces of the shift collar
that the fork bears against. The MOST likely problem is:
A. a bad air seal in the overdrive shift unit
B. engagement of overdrive while the transmission
is in low range
C. the driver preselects the splitter button, fip-
ping it and then failing to complete the shift until
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