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Automotive Transmission Diagnostics Exam with Verified Solutions, Exams of Advanced Education

Louisiana Tech UniversityAdvanced Education

A series of multiple-choice questions focused on diagnosing and resolving issues within automotive transmission systems. It covers a range of topics, including shift lever vibrations, gearset contact patterns, clutch noises, interaxle differential locks, and automatic transmission stalling. Each question is accompanied by a set of possible answers, with the correct solution indicated. The questions address common problems encountered in both manual and automatic transmissions, offering insights into potential causes and troubleshooting steps. This material is valuable for students and professionals in automotive technology, providing a practical assessment of their knowledge in transmission diagnostics and repair. The document serves as a useful tool for exam preparation, skill enhancement, and practical application in automotive maintenance and repair scenarios.

Typology: Exams

2024/2025

Available from 05/14/2025

Smartsolutions
Smartsolutions 🇺🇸

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310T EXAM WITH COMPLETE SOLUTIONS 100% VERIFIED!!
1. The shift lever vibrates and produces a noise that is audible from the transmission
only while
under deceleration. What is the likely cause?
a. Brinelled U-joints
b. Slip joint lacks lubrication
c. Defective clutch
d. Driveline out of phase - ANSWER b. Slip jount lacks lubrication
2. The surface contact area of a ring & pinion gearset is "centered" upon the gear teeth,
but the
gear-contact is too close to the top-land. What procedure is required in order to provide
the
correct gear-tooth contact pattern?
a. Move the pinion away from the crown gear
b. Move the ring towards the heel
c. Move the crown towards the root
d. Move the pinion towards the crush sleeve - ANSWER c. Move the crown towards the
root
3. As the clutch is engaged, there is a noise emitted from that area. This noise dissipates
once
the clutch is depressed. What is the probable cause?
a. Worn pilot bearing
b. Damaged release bearing
c. Worn input shaft bearing
pf3
pf4
pf5
pf8
pf9
pfa
pfd
pfe
pff

Partial preview of the text

Download Automotive Transmission Diagnostics Exam with Verified Solutions and more Exams Advanced Education in PDF only on Docsity!

310 T EXAM WITH COMPLETE SOLUTIONS 100 % VERIFIED!!

  1. The shift lever vibrates and produces a noise that is audible from the transmission only while under deceleration. What is the likely cause? a. Brinelled U-joints b. Slip joint lacks lubrication c. Defective clutch d. Driveline out of phase - ANSWER b. Slip jount lacks lubrication
  2. The surface contact area of a ring & pinion gearset is "centered" upon the gear teeth, but the gear-contact is too close to the top-land. What procedure is required in order to provide the correct gear-tooth contact pattern? a. Move the pinion away from the crown gear b. Move the ring towards the heel c. Move the crown towards the root d. Move the pinion towards the crush sleeve - ANSWER c. Move the crown towards the root
  3. As the clutch is engaged, there is a noise emitted from that area. This noise dissipates once the clutch is depressed. What is the probable cause? a. Worn pilot bearing b. Damaged release bearing c. Worn input shaft bearing

d. Lack of lubrication to the output shaft - ANSWER C. Worn input shaft bearing

  1. An interaxle differential-lock will not engage. What is the most likely cause? a. It will only engage on sharp turns b. It can only be engaged at high speeds c. It can only be engaged with the vehicle stopped and the parking brakes on d. A damaged shift fork lever - ANSWER d. A damaged shift fork lever
  2. What would cause an automatic transmission to stall at low speed operation? a. Improper convertor clutch operation. b. Forward clutch slippage c. Insufficient pump pressure d. Low engine power - ANSWER d. Low engine power
  3. During normal driving conditions, the shift lever vibrates and a squeaking noise is emitted from the drive line. What is the probable cause? a. Brinelled u-joints b. Slip yolk splines are seized c. Driveline is out of phase d. Worn clutch - ANSWER a. brinelled u-joints
  4. When the operator selects the "high-range" of a two speed inter-axle unit, the unit wil not engage. What is the probable cause? a. Nothing as it will only engage on turns b. It will engage only when the vehicle is motionless c. The driveline is out of phase

placed? a. Both in reverse b. Transmission in first gear c. Both in neutral d. Both in low range - ANSWER c. Both in neutral

  1. When rebuilding a differential, upon re-assembly, which component is installed first? a. Pinion b. Crown c. Trunnion d. U-joint - ANSWER a. Pinion
  2. When the inter-axle differential unit is placed into the locked position, then? a. All four of the drive wheels are now locked together b. There is now a mechanical connection between two drive axles c. Differential action can no longer occur within the axles d. There is zero power transmitted to the pavement - ANSWER b.. There is now a mechanical connection between two drive axles
  3. A transmission will "pop" out of gear upon deceleration, what is the most likely cause? a. Input shaft splines are worn b. Synchronizer has locked into place c. Weak or broken detent springs and balls d. Linkage requires adjustment - ANSWER c. Weak or broken detent springs and balls
  4. An automatic transmission will shift into forward range, but it will not shift into the reverse

range, when selected. What is the likely cause? a. Low transmission fluid b. Defective neutral switch c. Defective reverse solenoid d. Electrical harness is defective - ANSWER c. defective reverse solenoid

  1. A drive-shaft yolk is broken, what is the probable cause? a. Inadequate torque loads b. Improper input shaft speed c. Rough terrain d. Bending fatigue due to high secondary loads - ANSWER d. Bending fatigue due to high secondary loads
  2. The rubberized portion of the driveshaft hanger bearing is damaged and unusable, what is the likely cause? a. Incorrect lubrication b. Driveshaft vibrations c. Incorrect driveline angle d. Unbalanced tires and rims - ANSWER c. Incorrect driveline angle
  3. A power divider is designed to? a. Dived torque between both axles b. Locks the differential action between both axles c. Dived the output rpm between the two drive axles d. Be mounted behind the most rearward axle - ANSWER a. dived torque between both axles

a. Burnt C3 clutch b. Poor road speed c. Faulty governor d. Low transmission fluid - ANSWER d. low transmission fluid

  1. What would cause both axles to be twisted in a differential? a. Over filled differential b. Improper lubricant c. Spin-out on engagement d. Differential was engaged at too-low of a road speed - ANSWER c. Spun out on engagement
  2. How would backlash be decreased in a differential? a. By moving the pinion away from the crown gear b. By moving the crown gear towards the pinion c. By moving the crown gear away from the pinion d. By changing the pinion pre-load - ANSWER B. By moving the crown gear towards the pinion
  3. How would pinion pre-load be measured? a. Using a vernier caliper b. Using a torque wrench c. Using a fish scale d. Using a dial indicator - ANSWER b. Using a torque wrench
  4. What would cause a power divider to fail? a. An air leak b. Faulty return spring

c. Engagement on low speeds d. Prolonged Difference in speed between both axles (spin out) - ANSWER no answer on test

  1. How is a twin countershaft timed? a. Key ways facing away from each other b. Input gear keyway facing the main shaft gear keyways c. Input gear keyway facing the countershaft gear keyway d. Output shaft keyway opposite from the idler gear keyway - ANSWER c. Input gear keyway facing the countershaft gear keyway
  2. What should be done to a refurbished clutch? a. Re-grind clutch surfaces b. Install wet c. Adjust release bearing distance d. Increase clutch pedal free play to 2-1/2" - ANSWER c. Adjust release bearing distance
  3. What adjustments need to be made to a pull-in clutch? a. End play b. Clutch brake squeeze c. Run-out d. Friction material spacing - ANSWER b. Clutch brake squeeze
  4. What is the final step when replacing a u-joint on a driveshaft? a. Torque caps b. Grease fittings c. Measure play d. Add slip joint - ANSWER b. Grease fittings

b. Improper drive angle c. Excessive gear lash d. Worn wheel bearing ends - ANSWER a. A plugged vent

  1. What will change while adding a vehicle air tag axle? a. GVWR b. Length of the overall vehicle c. Transmission strength d. Tire size - ANSWER a. GVWR
  2. What is the cause for aerate transmission fluid? a. Worn clutches b. Improperly timed transmission c. Over speeding d. Leaking seals - ANSWER d. Leaking seals
  3. In an electronically controlled automatic transmission, what could be the problem if it doesn't shift from second to third gear? a. Governor pressure too high b. Second - third shift solenoid is open c. Modulator pressure is too low d. Worn synchronizer - ANSWER b. second - third shift solenoid is open
  4. In a standard transmission, what could be the problem if there is an internal air leak? a. Air pressure is set too high b. Air pressure is set too low

c. Air leak at the shift valve d. Air leak at the shifter control knob - ANSWER c. Air leak at the shift valve

  1. What do you check for when measuring the efficiency of a transmission cooler? a. Lubricity b. Temperature c. Viscosity d. Pour point - ANSWER b. Temperature
  2. In a automatic transmission, what could be the reason for rough shifting in all gears? a. Bad modulator valve b. Bad shifter ecu c. Faulty governor d. Bad C5 clutch - ANSWER a. Bad modulator valve
  3. What is the easiest way to set driveline angles? a. Adjust differential angle b. Raise or lower the transmission mounts c. Use multiple driveshafts d. Angle the differential pinions - ANSWER a. Adjust differential angle
  4. The main gears in a twin counter shaft do what? a. Float b. Rotate in opposite directions from each other c. Balance the transmissions torque loads d. Splined to the input shaft - ANSWER a. Float

a. Worn blocking rings. b. Worn main drive gear teeth. c. Worn countershaft drive gear teeth. d. Insufficient clutch free pedal travel. - ANSWER a. Worn blocking rings

  1. What would cause a standard transmission to select two gears at the same time? a. Worn shift rail detents. b. Worn shift lever finger. c. Worn shift rail interlocks. d. Weak reverse plunger spring. - ANSWER c. Worn shift rail interlocks
  2. What would be indicated if an automatic transmission will go into low gear but fails to upshift? a. Worn clutch packs. b. Low governor pressure. c. A sticking shift selector. d. Insufficient throttle valve adjustment. - ANSWER b. low governor pressure
  3. What would allow the engine to start in any gear on a vehicle equipped with an auto-shift transmission? a. Shift finger stuck in neutral. b. A defective start enable relay. c. A defective gear indicator display. d. The gear select motor stuck in neutral. - ANSWER b. a defective start enable relay
  4. What would prevent an upshift in the main box of an automated transmission? a. Low air pressure.

b. No clutch free-play. c. Faulty speed sensor. d. Faulty gear indicator. - ANSWER c. faulty speed sensor

  1. What would cause a clunking noise when engaging a gear in a forward or reverse direction? a. Worn slip joint splines. b. Out of phase driveline. c. Worn out steady bearing. d. Incorrect air suspension height. - ANSWER a. worn slip joint splines
  2. What would be indicated by excessive noise from the rear axle during acceleration? a. Worn axle splines. b. Excessive backlash. c. Insufficient backlash. d. A defective axle bearing. - ANSWER b. excessive backlash
  3. When setting a double disc angle spring clutch, which adjustment should be performed first? a. Free pedal. b. Clutch brake. c. Linkage length. d. Upper pedal stop. - ANSWER b. Clutch brake
  4. What must be done when installing a countershaft that is supported with tapered roller bearings?

b. Operating in a cold environment c. Wheel size incorrect d. Incorrect driveline angle - ANSWER a. improper lubricant

  1. When replacing a universal joint in a multi-piece driveshaft, what should be verified during re- installation? a. Driveshaft balance b. Driveshaft phasing c. Driveshaft angle d. Rear axle operating angle - ANSWER b. driveshaft phasing
  2. What could cause slippage in only one gear range on a automatic transmission? a. A defective governor b. A defective or leaking clutch apply piston seal c. Worn transmission oil pump gears d. Low transmission fluid - ANSWER b. A defective or leaking clutch apply piston seal
  3. In a standard transmission what could cause a noise in neutral? a. Worn clutch release bearing b. Worn mainshaft rear bearing c. Chipped sliding gear teeth d. Worn or damaged speedometer gear teeth - ANSWER a. worn clutch release bearing
  4. When performing a stall test on a truck equipped with a automatic transmission, what could cause a low RPM stall reading? a. A failed clutch in the transmission b. A failed stator one-way clutch c. Worn turbine fins

d. A low transmission fluid - ANSWER b. a failed stator one-way clutch