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2014 Red Seal > Differentials, Drive Axles, and Drive Shafts > Flashcards

Differentials, Drive Axles, and Drive Shafts Flashcards

0
Q

How are problems with the differential and drive axles usually first noticed?

A

a. noise?

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1
Q

What type of floating axle has one wheel bearing per wheel on the outside of the axle housing?

A

a.

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2
Q

What type of vehicle does not typically use constant velocity joints?

a. conventional front-wheel-drive vehicles
b. front-wheel-drive vehicles with independent front suspension
c. conventional rear-wheel-drive vehicles
d. rear-wheel-drive vehicles with independent front suspension

A

c. conventional rear-wheel-drive vehicles?

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3
Q

In front-wheel drivetrains, what is the CV joint nearer the transaxle called?

a. fixed joint
b. inboard joint
c. outboard joint
d. Rzeppa joint

A

b. inboard joint

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4
Q

What is a CV joint that is capable of in- and out- movement called?

a. plunge joint
b. fixed joint
c. outboard joint
d. Rzeppa joint

A

a. plunge joint

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5
Q

What component in the final drive assembly are the axle shafts splined to?

a. pinion gears
b. side gears
c. differential case
d. crown gear

A

b. side gears?

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6
Q

What operating conditions typically require the use of the double-offset joint?

a. higher operating angles and greater plunge depth
b. lower operating angles and lower plunge depth
c. higher operating angles and lower plunge depth
d. lower operating angles and greater plunge depth

A

a. Higher operating angles and greater plunge depth

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7
Q

Which type of joint has a flatter design than any other?

a. double-offset
b. disc
c. cross groove
d. fixed tripod

A

d. ?

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8
Q

Which of these is the best way to determine which CV joint is faulty?

a. a squeeze test
b. a runout test
c. a visual inspection
d. a road test

A

d.?

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9
Q

What would cause a final drive noise that is heard only when cornering?

a. an incorrect tooth contact pattern
b. a broken crown gear tooth
c. worn differential case gears
d. a bent axle housing

A

c. ?

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10
Q

What driveshaft component provides a means of connecting two or more shafts together?

a. pinion flange
b. U-joint
c. yoke
d. biscuit

A

b. ?

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11
Q

Which type of driving axle supports the weight of the vehicle?

a. semifloating
b. three-quarter floating
c. full-floating
d. non-floating

A

d. ?

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12
Q

When performing a final drive gear tooth pattern inspection, what would be done to correct a pattern that was too close the the heel of the tooth?

a. increase the backlash between the ring and pinion gears
b. decrease the backlash between the ring and pinion gears
c. increase the pinion gear depth
d. decrease the pinion gear depth

A

b. ?

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13
Q

How many bearings are required to support an overhung mounted pinion?

a. one
b. two
c. three
d. four

A

b. ?

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14
Q

In a limited slip differential, what are the friction discs and clutch plates located between?

a. the two side gears
b. the two spider gears
c. the side gears and the differential case
d. the spider and crown gears

A

c. ?

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15
Q

What occurs in a differential during cornering?

a. the inside axle side gear turns faster that the outer axle side gear
b. the case turns at the same speed as the drive shaft
c. the crown gear will slow down slightly
d. the pinion/spider gears rotate on the pinion shaft

A

d. ?

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16
Q

What does the term “hypoid” final drive indicate?

a. spur bevel pinion and ring gear set is used
b. the centreline of the drive pinion is below the ring/crown gear centreline
c. the ring/crown gear and drive pinion gear centrelines are on the same plane
d. a spiral bevel pinion and ring gear set is used

A

c. ?

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17
Q

A differential is noisy on both right and left turns but is otherwise quiet.l Which of the following conditions should be checked out first?

a. worn differential pinion gears
b. worn drive pinion bearings
c. a defective axle bearing
d. worn crown gear bearings

A

a. worn differential pinion gears

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18
Q

In which of the following applications would a constant velocity joint NOT be used?

a. rear wheel drive vehicles
b. front wheel drive vehicles
c. rear wheel drive with semi independent rear suspension
d. four wheel drive with transfer case

A

a. rear wheel drive vehicles

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19
Q

What is usually used to set drive pinion depth of mesh into the ring gear in the final drive?

a. shims
b. adjusting screw
c. preload torque
d. drive shaft length

A

a. shims

20
Q

When an axle drive shaft imparts drive torque without supporting any of the vehicle weight, how should it be described?

a. full floating
b. three quarter floating
c. semi floating
d. solid

A

a. full floating

21
Q

When a howling noise is produced by a final drive carrier, what should be done first?

a. replace the bearings
b. overhaul the unit
c. check the driveshaft U-joints
d. check the lubricant level

A

d. check the lubricant level

22
Q

Which is the most accurate method of identifying and correcting a driveshaft vibration on a rear wheel drive vehicle?

a. trial and error with a hose clamp
b. knock weight washers off and start from scratch
c. transducer and strobe light
d. dial indicator

A

c. transducer and strobe light

23
Q

Where is a plunge CV joint located?

a. outboard
b. inboard
c. in rear wheel drive shaft
d. between the engine and transaxle

A

b. inboard

24
Q

If backlash is less than specifications in a standard differential, where will the ring gear tooth pattern be?

a. close to the heel
b. close to the flank
c. close to the toe
d. close to the face

A

c. close to the toe

25
Q

Which of the following can be done to correct an improper driveline angle on a rear wheel drive vehicle?

a. replace the universal joint
b. wedge rear axle leaf spring
c. change the transmission tail shaft
d. re-torque the pinion nut

A

b. wedge the rear axle leaf spring

26
Q

A front wheel drive vehicle makes a clunking noise during a right turn. Which of the following is the most likely cause?

a. worn left inboard CV joint
b. worn right inboard CV joint
c. worn left outboard CV joint
d. worn right outboard CV joint

A

c. worn left outboard CV joint

27
Q

In a rear differential, if the ring gear backlash is improperly adjusted, which of the following would be more likely to occur?

a. side bearing overheating
b. pinion bearing wear
c. lubrication leaks
d. rear end whining or clunking

A

d. rear end whining or clunking

28
Q

Which of the following components wear extremely rapidly if a vehicle with an open differential is allowed to spin one wheel freely for an extended period of time?

a. ring gear and pinion
b. side gear teeth
c. pinion bearings
d. pinion and side gear thrust washers

A

d. pinion and side gear thrust washers

29
Q

Which of the following is the correct method of checking universal joints?

a. grasp the 2 halves connected by the universal joint and check for end play
b. remove the drive shaft and feel for play
c. fill the universal joint with grease and check for play
d. lever with large slip joint pliers and a pry bar

A

b. remove the drive shaft and feel for play

30
Q

What should be done in order to prevent binding at the drive shaft slip yoke and the transmission output shaft?

a. fill the yoke with wheel bearing grease before installation
b. lightly coat the yoke with synthetic rubber grease
c. apply a high temperature synthetic chassis grease to the splines
d. apply an anti seize compound

A

c. apply a high temperature synthetic chassis grease to the splines

31
Q

Differential action would never occur

a. while cornering quickly
b. when covering slowly
c. when traveling in a straight line
d. while out of control in a spin

A

c. when traveling in a straight line

32
Q

Which of the following gear sets have the drive pinion shaft located below the ring gear centre line?

a. hypoid
b. helical
c. spiral bevel
d. beveled spur

A

a. hypoin

33
Q

The differential section of a transaxle provides

a. reverse
b. final drive
c. drive axle connection
d. both B and C

A

d. both B and C

34
Q

Which of the following describes a coast side in a typical ring gear tooth and tooth pattern?

a. convex side of gear tooth
b. concave side of gear tooth
c. outer end of ring gear tooth
d. inner end of ring gear tooth

A

b. concave side of gear tooth

35
Q

In a disc clutch differential, the plates are stacked (blank) between internally and externally splined plates.

a. consecutively
b. alternately
c. randomly
d. non sequentially

A

b. alternately

36
Q

Noise heard during acceleration can be caused by a worn:

a. front pinion bearing
b. rear pinion bearing
c. differential case bearing
d. differential side gears

A

b. rear pinion bearing

37
Q

A noise that does not change as the vehicle travels around corners is usually caused by a:

a. worn or improperly inflated tires
b. worn pinion bearings
c. worn axles bearings
d. worn differential gears

A

a. worn or improperly inflated tires

38
Q

A differential noise that occurs while turning that can often be cured by a lubricant change and 160 km of normal driving is:

a. chuckle noise
b. chatter noise
c. road speed noise
d. gear whine

A

b. chatter noise

39
Q

What is indicated by a torque wrench that reads 25 inch pounds (3Nm) while the needle is bouncing on the dial when checking total bearing preload?

a. normal preload
b. excessive preload
c. worn pinion bearings
d. too little preload exists

A

c. worn pinion bearings

40
Q

Backlash is within specifications, but case bearing preload is below specifications in a shim type differential. To correct:

a. remove shims from the left pack, and add shims to the right pack
b. remove shims from the right pack and add shims to the left pack
c. add equal shims to both the left and right shims packs
d. remove equal shims to both the left and right shim packs

A

c. add equal shims to both the left and right shim packs

41
Q

Backlash is excessive and case bearing preload is within specifications in a shim type differential. To correct:

a. remove shims from the left pack and add shims to the right pack
b. remove shims from the right pack and add shims to the left pack
c. add equal shims to both the left and right shim packs
d. remove equal shims from both the left and right shim packs

A

b. remove shims from the right pack and add shims to the left pack

42
Q

Both backlash and case bearing preload exceed specifications in a shim type differential. To correct:

a. add shims to the left shim pack
b. remove shims from the right pack, and add shims to the left pack
c. remove shims from the right pack
d. remove equal shims from both shim packs

A

c. remove from the right shim pack

43
Q

Preload is below specifications and backlash is correct in a threaded adjuster type differential. To correct:

a. move each adjuster out
b. move each adjuster in
c. move the left adjuster in
d. move the right adjuster in

A

b. move each adjuster in

44
Q

Preload is below specifications and backlash is excessive in a threaded adjuster type differential. To correct:

a. move each adjuster out
b. move each adjuster in
c. move the left adjuster in
d. move the right adjuster in

A

c. move the left adjuster in

45
Q

The intermittent noise produced by damaged differential gears is commonly known as:

a. chatter
b. growl
c. whine
d. chuckle

A

d. chuckle

46
Q

With a dial indicator on a differential, what are you measuring?

a. tooth thickness
b. backlash
c. heel to toe depth
d. crown gear runout

A

b. backlash

47
Q

On a rear wheel drive vehicle, vibration increases with speed. What is the cause?

a. out of phase drive line or U-joint
b. bad U-joint
c. under inflated tire
d. rear U-joint is not parallel with rear yoke

A

a. out of phase drive line or U-joint

48
Q

When replacing U-joints, what is the most important procedure to remember?

a. rear U-joint should be parallel with differential yoke
b. clean and wipe the slip yoke
c. make sure the U-joints are in phase
d. drive shaft angle

A

c. make sure the U-joints are in phase

2014 Red Seal (1 decks)

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