Drive Axle and Carrier Fundamentals and Service (Off Road) - Part A

Question 1

What are the five functions of the drive axle assembly?

Answer 1

1. The drive axle assembly must withstand and support the weight of the vehicle and load.
2. The drive axle assembly provides a gear reduction in the basic vehicle powertrain.
3. The Drive axle assembly must change the direction of torque by 90 degrees.
4. The drive axle must transfer torque evenly between the two wheel assemblies.
5. The operator is able to lock the wheel ends in a low traction situation.

Question 2

The pinion bearing cage is always a removable component of the carrier housing.
True
False

Answer 2

False

Question 3

The input drive pinion is in constant mesh with the:

a. differential pinions.
b. axle side gears.
c. bevel gear.
d. differential case.

Answer 3

c. bevel gear.

Question 4

The bevel gear is bolted directly to the:

a. Carrier housing.
b. differential pinions.
c. plain case half.
d. flanged case half.

Answer 4

d. flanged case half.

Question 5

The most common differential carrier assembly used today is the:

a. single speed single reduction
b. single speed double reduction
c. two speed double reduction
d. planetary carrier

Answer 5

a. single speed single reduction.

Question 6

Number the following components in the path of power through the single speed single reduction carrier.
input yoke
differential cross shaft
differential case
axle shafts
input drive pinion
bevel gear
axle side gears
differential pinions
wheel assemblies

Answer 6

input yoke-1
differential cross shaft-5
differential case-4
axle shafts-8
input drive pinion-2
bevel gear-3
axle side gears-7
differential pinions-6
wheel assemblies-9