Deck 75: Driveline Operation

Question 1

6)Which of the following parts is LEAST-Likely included in the driveline?

A) Driveshaft
B) Axles and axle bearings
C) Locking hub
D) Differential

Answer 1

C

Question 2

7)The most popular universal joint design is called a ____.

A) ball and trunnion
B) pumpkin
C) cross and yoke
D) swing axle

Answer 2

C

Question 3

10)While having a discussion, Technician A says that the purpose of a differential is to transfer power from the driveline to the wheels. Technician B says that it increases engine torque by providing a final drive gear reduction, usually of about 2.5 to 3.5 to 1. Who is correct?

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

Answer 3

C

Question 4

16)On rear-wheel-drive vehicles, ____________________ is a term that describes the parts that transfer power from the transmission to the rear wheels.

Question 5

15)While having a discussion, Technician A says that automatic hubs always disengage when four-wheel drive is shut off. Technician B says that they only work in reverse. Who is correct?

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

Question 6

3)The pinion gear drives the ring gear.

Question 7

20)With a(n) ____________________, one pinion tooth will contact two or three different ring gear teeth during one revolution and two or three different teeth the next revolution. At the third revolution it will be back to the same teeth on the ring gear.

Question 8

4)In a planetary gearset, the pinion gear is lower than the centerline of the ring gear.

Question 9

12)All of the following statements are true EXCEPT:

A) a standard differential allows one wheel to rotate if it begins to slip.
B) a limited slip differential locks the spider gears when one wheel starts to lose traction.
C) if there are 10 teeth on the pinion gear and 33 teeth on the ring gear, the ratio is 5.30:1.
D) when torque is applied to the clutch pack, the side gear locks to the case, causing the wheel on that side to be driven.

Question 10

2)The vibration caused by the speeding up and slowing down of the driveshaft can be canceled by putting two Cardan U-joints next to each other.

Question 11

1)Replacement joints usually have a zerk fitting for lubrication after installation and during service.

Question 12

18)The side gears and differential pinions are called ____________________.

Question 13

8)Most passenger cars have a single driveshaft, but a vehicle with a longer wheel base will MOST-Likely have a:

A) two-piece drive shaft
B) three-piece drive shaft
C) four-piece drive shaft
D) five-piece drive shaft

Question 14

9)The part that is MOST-Likely a type of constant velocity universal joint is the:

A) halfshaft
B) driveline
C) tripod tulip
D) gearset

Question 15

14)In ____, power flows through the locked planetary gearset to the mainshaft and to the rear differential.

A) two-wheel-drive high range (2H)
B) two-wheel-drive low range (2L)
C) four-wheel-drive high range (4H)
D) four-wheel-drive low range (4L)

Question 16

13)All of the following statements are true EXCEPT:

A) drive axles usually support the weight of the vehicle.
B) it is important that tires be the same size on all limited slip differentials.
C) a bearing retainer is installed on the axle before the bearing is pressed on to provide a means of bolting the assembly to the brake backing plate.
D) semi-floating bearings are found on trucks.

Question 17

17)Front-wheel-drive vehicles have a transaxle with two ____________________ that deliver power to the front wheels.

Question 18

5)With a hunting gearset, one tooth on the pinion gear meshes with the same tooth on the ring gear again and again, rather than "hunting" for all of the rest of the gear teeth.

Question 19

19)With a(n) ____________________ gearset, one pinion gear tooth will move around the ring gear until it has contacted each one of its teeth.

Question 20

11)Which of the following is LEAST-Likely a component of a differential assembly?

A) Ring gear
B) Axle
C) Drive pinion
D) Thinwall

Question 21

24)What is the purpose of gear oils?

Question 22

21)When a slip yoke is used with an automatic transmission, there is sometimes a seal that goes over the output shaft. What is its purpose?

Question 23

25)What is the purpose of locking hubs?

Question 24

22)What is the function of the crush sleeve?

Question 25

23)What are EP additives?