100% satisfaction guarantee Immediately available after payment Both online and in PDF No strings attached
logo-home
ASE T3 Exam Practice Questions and Answers $12.49   Add to cart

Exam (elaborations)

ASE T3 Exam Practice Questions and Answers

 2 views  0 purchase
  • Course
  • ASE
  • Institution
  • ASE

ASE T3 Exam Practice Questions and Answers 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 ...

[Show more]

Preview 4 out of 42  pages

  • October 23, 2024
  • 42
  • 2024/2025
  • Exam (elaborations)
  • Questions & answers
  • ASE
  • ASE
avatar-seller
GraceAmelia
©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




ASE T3 Exam Practice Questions and Answers


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 - Ans:✔✔-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.

Page 1/42

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




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 - Ans:✔✔-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 - Ans:✔✔-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




Page 2/42

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




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 - Ans:✔✔-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.


Page 3/42

, ©GRACEAMELIA 2024/2025 ACADEMIC YEAR. ALL RIGHTS RESERVED

FIRST PUBLISH OCTOBER 2024




C. Engine mounts are worn.


D. Engine rating is such that the transmission requires the use of an oil cooler. - Ans:✔✔-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) - Ans:✔✔-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.




Page 4/42

The benefits of buying summaries with Stuvia:

Guaranteed quality through customer reviews

Guaranteed quality through customer reviews

Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.

Quick and easy check-out

Quick and easy check-out

You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.

Focus on what matters

Focus on what matters

Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!

Frequently asked questions

What do I get when I buy this document?

You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.

Satisfaction guarantee: how does it work?

Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.

Who am I buying these notes from?

Stuvia is a marketplace, so you are not buying this document from us, but from seller GraceAmelia. Stuvia facilitates payment to the seller.

Will I be stuck with a subscription?

No, you only buy these notes for $12.49. You're not tied to anything after your purchase.

Can Stuvia be trusted?

4.6 stars on Google & Trustpilot (+1000 reviews)

79223 documents were sold in the last 30 days

Founded in 2010, the go-to place to buy study notes for 14 years now

Start selling
$12.49
  • (0)
  Add to cart