Brainscape's Knowledge GenomeTM

Browse over 1 million classes created by top students, professors, publishers, and experts.


See full index

HET3 > 303Ja: Drive Axle & Carrier Fundamentals & Service > Flashcards

303Ja: Drive Axle & Carrier Fundamentals & Service Flashcards

1
Q

What are the five functions of the drive axle assembly?

A
  • Withstand and support the weight of the vehicle and load
  • Provides a gear reduction in the basic vehicle powertrain
  • Change the direction of torque by 90°
  • Transfer torque evenly between the two wheel assemblies
  • Lock the wheel ends in a low traction situation

303Ja Pg. 2

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
2
Q

The main function of the carrier housing is to:

a) House the axle shafts
b) Secure the suspension components
c) Withstand the weight of the vehicle
d) Hold the internal gear components

A

D) Hold the internal gear components.

303Ja Pg. 5

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
3
Q

The pinion bearing cage is always a removable component of the carrier housing (T/F)

A

False

Removable or integral

303Ja Pg. 11

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
4
Q

The overhung pinion differs from the straddle mount in that it has a short stub that extends past the end of the pinion gear. (T/F)

A

False
Straddle mount has the stub shaft.
Can be mounted as either amboid or hypoid.

303Ja Pg. 12

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
5
Q

The input drive pinion is in constant mesh with the:

a) Differential pinions
b) Axle side gears
c) Bevel gear
d) Differential case

A

C) Bevel gear

303Ja Pg. 13

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
6
Q

What is the main purpose of the thrust screw?

A

Prevents the bevel gear from deflecting away from the input pinion during heavy torque loads.

303Ja Pg. 14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
7
Q

The bevel gear is bolted directly to the:

a) Carrier housing
b) Differential pinions
c) Plain case half
d) Flanged case half

A

D) Flanged case half

303Ja Pg. 14

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
8
Q

The differential pinions are driven by the:

a) Cross shafts
b) Axle side gears
c) Bevel gear
d) Case halves

A

A) Cross shafts

303Ja Pg. 15

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
9
Q

The most common differential carrier assembly used today is the:

a) Single speed, single reduction
b) Singe seed, double reduction
c) Two speed, double reduction
d) Planetary carrier

A

A) Single speed, single reduction

303Ja Pg. 9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
10
Q

Which components are attached to the drive axle housing?

a) Suspension components
b) Wheels tires and hubs
c) Carrier housing
d) All of the above

A

D) All of the above

303Ja Pg. 9

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
11
Q

What is the path-of-power through a single speed, single reduction carrier assembly. Begin with the input shaft yoke and end with the wheel assemblies.

A

1) Input shaft yoke
2) Input drive pinion
3) Bevel gear
4) Differential case
5) Differential cross shaft
6) Differential pinions
7) Axle side gears
8) Axle shafts
9) Wheel assemblies

303Ja Pg. 15

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
12
Q

The torque available to the wheel with good traction in a wheel spin condition is:

a) Full torque
b) Half of full torque
c) Twice that of the torque to the spinning wheel
d) The same as the torque to the spinning wheel

A

D) The same as the torque to the spinning wheel

303Ja Pg. 17

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
13
Q

When a vehicle is turning a corner, the differential assembly allows the:

a) Inner drive wheel to rotate faster than the outer drive wheel
b) Outer drive wheel to rotate faster than the inner drive wheel
c) Bevel gear to rotate at the same speed as the outer drive wheel
d) Bevel gear to rotate at the same speed as the inner drive wheel

A

B) Outer drive wheel to rotate faster than the inner drive wheel

303Ja Pg. 19

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
14
Q

Semi-floating axle shafts can be removed from a vehicle when the weight of the vehicle is on the drive wheels. (T/F)

A

False

Full-Floating axle is able to be removed while the vehicle weight is still on the tires.

303Ja Pg. 7

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
15
Q

Transfer cases always incorporate a differential to allow for a difference in speed between the two output shafts. (T/F)

A

False

303Ja Pg. 22

How well did you know this?
1
Not at all
2
3
4
5
Perfectly
16
Q

A planetary differential allows for torque to be proportioned between its outputs. (T/F)

A

True

303Ja Pg. 24

17
Q

Why is it preferable to allow the operator control over the differential lock?

A

To minimize tire spin and maximize traction in low traction conditions, but to also allow differential action in high traction conditions and while hauling at higher speeds.

303Ja Pg.

18
Q

The axle spider gears are able to rotate at different speeds than the case when required? (T/F)

A

True

303Ja Pg. 18

19
Q

What are some identification numbers you can find stamped on pinion and bevel gears?

A

Steel heat code, part number, matched set number, manufacture date, tooth combination.

303Ja Pg. 13

20
Q

What’s the formula for gear ratio?

A

Driven/Drive

303Ja Pg. 16

21
Q

The differential assembly will always deliver the same amount of torque to each wheel. (T/F)

A

True

303Ja Pg. 17

22
Q

What’s the formula for bevel gear speed?

A

(Left Side Speed + Right Side Speed)/2

303Ja Pg. 18

23
Q

What is the purpose of a limited slip and no-spin differential?

A

Reduces wheel spin durring low traction conditions.

If one wheel looses traction, torque will be transfered to the other tire with greater traction.

303Ja Pg. 30

24
Q

The no-spin differential can not take corners. (T/F)

A

False.

The unit disengages to allow differential action.

303Ja Pg. 31

25
Q

What percentage of the weight of the equipment and load is carried by a full-floating axle?

A

None

Weight of the vehicle is transmitted through the axle housing, bearings, hub, and wheels.

303Ja Pg. 7

26
Q

What component of a drive axle provides a framework for mounting the carrier assembly and suspension components?

A

Axle housing

303Ja Pg. 9

27
Q

What is the opening in an axle housing where the carrier assembly is installed?

A

Bowl

303Ja Pg. 9

28
Q

What does the term GAWR mean?

A

Gross axle weight rating

303Ja Pg. 2

29
Q

For transfer cases with a standard interaxle differential, torque is split equally between the front and rear drive shafts. (T/F)

A

True

303Ja Pg. 22

30
Q

In a limited slip differential, when speed difference between the axles occurs, the gear tooth separating forces between the spiders and side gear causes compression of the _____ _____ and created internal friction between the side gears and carrier housing.

A

Clutch packs

303Ja Pg. 30

31
Q

In a no-spin differential, it is normal to hear a ratcheting noise when cornering. (T/F)

A

True

From the disengaging and engaging of the clutching teeth.

303Ja Pg. 32

32
Q

What internal components are not in a no-spin differential that are in a conventional differential?

A
  • Standard cross shaft
  • Differencial pinions
  • Axle side gears

303Ja Pg. 31

33
Q

What are some main characteristics of a straddle mount pinion?

A
  • Has a short stub shaft for mounting a third bearing to
  • Commonly used in applications that experience high torque loads

303Ja Pg. 12

34
Q

What are some characteristics of an overhung mount pinion?

A
  • Uses only two bearing
  • End of pinion gear is flat; no stub shaft

303Ja Pg. 12

HET3 (36 decks)

Brainscape helps you reach your goals faster, through stronger study habits.
© 2024 Bold Learning Solutions. Terms and Conditions