Deck 124: Drive Shafts and Cv Joint Service

Question 1

Two technicians are discussing U-joints. Technician A says that a defective U-joint could cause a loud clunk when the transmission is shifted between Drive and Reverse. Technician B says a worn U-joint can cause a clicking sound when driving the vehicle in reverse. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Answer 1

Both technicians A and B

Question 2

Incorrect or unequal U-joint working angles are most likely to be caused by ________.

A)Defective or damaged U-joints
B)A dry output shaft spline
C)A collapsed engine or transmission mount
D)A bent drive shaft

Answer 2

A collapsed engine or transmission mount

Question 3

A defective outer CV joint will usually make a ________.

A)Clicking noise
B)Rumbling noise
C)Growling noise
D)Clunking noise

Answer 3

Clicking noise

Question 4

The last step after replacing a defective CV boot is to ________.

A)"Burp" the boot
B)Separate the CV joint before installation
C)Lubricate the CV joint with chassis grease
D)Mark the location of the boot on the drive axle shaft

Question 5

A cardan-type U-joint may require what tool(s) to replace?

A)A torch
B)A press or a vice
C)A special tool
D)May require any of the above

Question 6

What needs to be removed to replace a drive axle shaft from a front wheel drive vehicle?

A)Lower control arm or ball joint
B)Tie rod end
C)Hub nut
D)All of the above

Question 7

The splines of the drive shaft yoke should be lubricated to prevent ________.

A)Transmission fluid leaking from the extension housing
B)A vibration
C)Spline bind
D)Rust

Question 8

It is recommended by many experts that an air impact wrench not be used to remove or install the drive axle shaft nut because the impacting force can damage the hub bearing.

Question 9

Front and rear drive shaft U-joint working angles should be within ________ degrees of each other.

A)3.0
B)4.0
C)1.0
D)0.5

Question 10

A defective (collapsed) engine mount on a front-wheel drive vehicle can cause a vibration.

Question 11

The typical RWD drive shaft rotates how many times faster than the wheels?

A)Two
B)One
C)It rotates at the same speed
D)Three

Question 12

If the transmission ratio is 1:1, the driveshaft speed is equal to engine speed.

Question 13

In overdrive gear, the driveshaft rotates slower than the engine.

Question 14

When replacing U-joints, a special tool must be used to press onto both sides of the joint to sheer the plastic retainer.

Question 15

When servicing a drive shaft, technician A says that its a good idea to tape the U-joint caps to prevent them from coming off. Technician B says that needle bearings are used with these type U-joints. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 16

Which tool is used to measure U-Joint working angles?

A)Vernier caliper
B)Micrometer
C)Dial indicator
D)None of these are correct

Question 17

The most common complaint from CV joint failure is noise while turning.

Question 18

A clunk noise from the drive line may be the result of excessive rear differential backlash.

Question 19

Technician A hammers on a tie rod stud to break the taper with the steering knuckle. Technician B uses a special puller to separate the tie rod stud from the steering knuckle. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 20

Two technicians are discussing FWD driveshaft service. Technician A says that removal of the driveshaft usually requires partial disassembly of the front suspension. Technician B says that the first step in driveshaft removal is to loosen the front hub nut. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 21

Technician A says that the outer portion of the driveshaft can be used as a slide hammer to pop the inboard CV joint out of the transaxle. Technician B says that you should not hammer on the outer end of the outboard CV joint to get it out of the hub. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 22

Most outboard CV joints are held onto the driveshaft by using a ________ at the end of the shaft.

A)Circlip
B)Cap screw
C)Snap ring
D)Any of these

Question 23

FWD driveshaft problems are usually indicated by ________.

A)Grease from a torn boot
B)Noise
C)Both A and B
D)Neither A nor B

Question 24

Technician A says that CV joint grease with a gritty texture is contaminated. Technician B says that any visible crack in the CV boot indicates contaminated joint grease. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 25

Technician A says that a proper U-joint inspection can be done with the driveshaft in place on the vehicle. Technician B says that you must remove the driveshaft to properly inspect the U-joints. Which technician is correct?

A)Technician A only
B)Technician B only
C)Both technicians A and B
D)Neither technician A nor B

Question 26

Which is not part of the diagnostic process for FWD CV-joint problems?

A)Inspect the boot for cracks tears
B)Test drive including variable CV-joint operating angles
C)Test drive including variable throttle changes
D)All of these are part of the diagnostic process

Question 27

What is the purpose of the wedge shown in this drawing?

A)To raise vehicle ride height
B)To lower vehicle ride height
C)To correct the driveshaft angle
D)To increase spring capacity

Question 28

Which of these methods is the preferred way to disconnect a tie rod end?

A)Method A
B)Method B
C)Both A and B
D)Neither A nor B