Automotive Technology
7th Edition
ISBN: 9781337794213
Author: ERJAVEC, Jack.
Publisher: Cengage,
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Textbook Question
Chapter 39, Problem 2ASRQ
A noise occurs in forward and reverse gears but not in neutral: Technician A says that the input shaft bearing may be bad. Technician B says that the mainshaft bearing may be bad. Who is correct?
a. Technician A only
b. Technician B only
c. Both Aand B
d. Neither A nor B
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Chapter 39 Solutions
Automotive Technology
Ch. 39 - After draining gear oil from a transaxie, the...Ch. 39 - Prob. 2SACh. 39 - Prob. 3SACh. 39 - What tool is often required to remove gears and...Ch. 39 - When removing or installing bearings, where should...Ch. 39 - List five common sources for transmission fluid...Ch. 39 - What should you do to properly identify the type...Ch. 39 - List at least five items that are typically...Ch. 39 - Prob. 1TFCh. 39 - True or False? Bearing noise increases under load...
Ch. 39 - A rough, growling noise that is heard from a...Ch. 39 - A clicking noise during transrnission/transaxle...Ch. 39 - Worn teeth on a speed gear can cause_______. a....Ch. 39 - Using a lubricant that is thicker than the...Ch. 39 - A poorly adjusted shift linkage can cause which of...Ch. 39 - Technician A says that the transmission rear seal...Ch. 39 - A noise occurs in forward and reverse gears but...Ch. 39 - A rough, growling noise occurs when a vehicle with...Ch. 39 - A car jumps out of gear into neutral, particularly...Ch. 39 - While diagnosing a noise from a transmission:...Ch. 39 - Technician A says that broken or worn engine and...Ch. 39 - Technician A says that shims may be used to adjust...Ch. 39 - During a test drive, a noise that appears to be...Ch. 39 - While inspecting the synchronizers of a transaxle:...Ch. 39 - Technician A says that the proper fluid level for...
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- Define the purpose of the final drive gears.arrow_forwardIn a simple planetary gearset, when the planetary carrier is held, the gearset produces a______. a. reverse b. direct drive c. fast overdrive d. forward reductionarrow_forwardWhen an idler gear is placed between the driving and driven gears, the driven gear:a. rotates the opposite direction as the drive gearb. rotates the same direction as the drive gearc. reduces the torque transfer from the drivegear to the driven geard. none of the abovearrow_forward
- What causes suction of fluid into the gear pump? a. when pressure drops during engagement of teeth at the suction side b. when pressure increases during engagement of teeth at the suction side c. when pressure drops during disengagement of teeth at the suction side d. when pressure increases during disengagement of teeth at the suction side Clear my choicearrow_forwardWhile inspecting a planetary gear-type final drive, Technician A says blackened pinion shafts indicate severe overloading. Technician B says bluish gears indicate overheating. Who is correct?arrow_forwardwhat would cause a final drive noise that is heard only when cornering? a. Incorrect tooth pattern contact b. a broken crown gear tooth c. worn differential case gears d. a bent axle housingarrow_forward
- Do fastarrow_forwardTechnician A says that side-bearing preload limits the amount the differential case is able to move laterally in the axle housing. Technician B says that adjusting backlash sets the depths of the mesh between the ring and pinion gears’ teeth. Who is correct?arrow_forwardUnits 5 & 6: Closed Gear Systems If two discs are fixed by an axis, their radial velocity and acceleration is equal. Essay Questions Multiple-Choice Question A. True B. False tandem are called what? What important element must we consider when re-scaling a gear system design? A. Space between the elements Cog C. Rack B. Recommended minimal element thickness C. Removal of support material is still possible D. None of the above D. Transmission g ng gearayoo ear teeth prevent eli C. Decreaseo D. Gear svstems are easy to design and manufacture Torce Ked ihe e uDove In Spur gear systems, the tooth profile is A. inclined to the axis of rotation. B. vertical to the axis of rotation. C. parallel to the axis of rotation. D. None of thesearrow_forward
- A car jumps out of gear into neutral, particularlywhen decelerating or going down hills: Technician Achecks the shift lever and external gearshift linkagefirst. Technician B says that the clutch pilot bearingcould be the problem. Who is correct?a. Technician A onlyb. Technician B onlyc. Both A and Bd. Neither A nor Barrow_forwardWhile reviewing the procedure for setting backlash: Technician A says that backlash is adjusted along with side-bearing preload by loosening or tightening side-bearing adjusting nuts. Technician B says that normally, to decrease the amount of backlash, a thin shim is installed on one side of the gear and a thick one on the other side. Who is correct? a Technician A only b. Technician B only c. Both A and B d. Neither A nor Barrow_forwardA clicking noise during transrnission/transaxle operation may be an indication of ________. a. worn mainshaft (input shaft) bearings b. faulty synchronizer operation c. failed oil seals d. worn, broken, or chipped gear teetharrow_forward
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