Test

Question 1

What is the maximum length of a single piece drive shaft?

Answer 1

70 inches

Question 2

What component has journal cross and trunions?

Answer 2

U joint

Question 3

What’s another way of saying u joint spider?

Answer 3

U- joint, Cross

Question 4

What component is either bolted or riveted to the ring gear?

Answer 4

The flange of a differential case

Question 5

What is the purpose of a slip joke assembly?

Answer 5

Lengthen and short the drive shaft due to road compression (all of the above)

Question 6

What determines Drive shaft size and thickness?

Answer 6

Torque, weight, type of operations and length of truck

Question 7

How do you properly line a drive shaft slip joke assembly?

Answer 7

Pump until it comes out of seal and relieve hole then put finger over relieve hole till it comes out of seal

Question 8

What component contains the cross and 4 differential pinions?

Answer 8

Differential case

Question 9

What happens in the differential when going around the corner?

Answer 9

The inside slows down while the outside wheel speeds up

Question 10

What is the advantage of synthetic gear oil?

Answer 10

The ability to stay adhered to the metal, good lubricity, better temp range, reduces friction (all of the above)

Question 11

What type of bearing failure turns blackened or discolored?

Answer 11

Running dry (lack of lubricant)

Question 12

What is the proper procedure to refill differential fluid?

Answer 12

Fill it to the hole, then jack it up to each side and drive it to reach operation temp then fill it to the fill hole

Question 13

If I have an avoid gear set what does that mean?

Answer 13

Above the center line of the crown gear

Question 14

With a differential lock, what two components must be spinning at the same speed?

Answer 14

Differential case and axle shaft

Question 15

What does inter axle differential mean?

Answer 15

Power divider

Question 16

By axle Differential has a lubrication pump what gets lubed?

Answer 16

Front bearing, inter axle differential, input shaft

Question 17

If I’m driving down the road and the axle breaks and the wheel falls off, what design do I have?

Answer 17

Semi floating

Question 18

What is the API rating of differential oil?

Answer 18

GL5

Question 19

What is the difference between a double reduction differential and a two speed differential?

Answer 19

Two speed can change from double reduction and a single reduction

Question 20

What are a couple of conditions that can cause spin out of a tandem drive truck?

Answer 20

Loss of traction, backing under a trailer

Question 21

What is the purpose of a power divider on a tandem drive truck?

Answer 21

To provide power in the front and rear axle

Question 22

Is it ideal to change differential fluid at operation temp?

Answer 22

Yes

Question 23

What is the purpose of a stand pipe in a u joint?

Answer 23

To hold the grease in the trunion

Question 24

What is the area of the ring gear closest to the center?

Answer 24

The Toe

Question 25

What component of the drive shaft spines and material with the yoke?

Answer 25

Slip joke

Question 26

When is a second gear set required in a differential assembly?

Answer 26

Double reduction

Question 27

Why should a driveshaft maintain flexibility while continuously transferring torque between powertrain components?

Answer 27

Drivetrain components change angles in relation to each other during operation, must continuously change length as rear axles react to torque and road changes, driveshafts expand and contract with temperature changes

Question 28

With modern technology, is an ignition brake needed?

Answer 28

No it’s not

Question 29

Does synthetic fluid have a better ability to capture abrasive contaminants?

Answer 29

Yes it does

Question 30

What is the final drive section of a drive axle?

Answer 30

Differential carrier