Deck 22: Automotive Belts

Question 1

When adjusting a new V-belt, set the tension about ____ pounds higher than the recommended specification.

A)5
B)15
C)20
D)25

Answer 1

B

Question 2

All of the following statements are true EXCEPT:

A)a V-belt has more surface area in contact with the pulley groove than a flat belt of the same width would have.
B)high cordline belts are stronger but require more material to manufacture.
C)some engines used dual V-belts to drive accessories.These must be replaced in pairs.
D)the V-belt was invented in 1970.

Answer 2

D

Question 3

The MOST-Likely part used to prevent belts from sagging in the middle is:

A)neoprene
B)the jackscrew
C)the ferrule
D)the tensile cord

Answer 3

D

Question 4

The strength of a belt is determined by the placement of its tensile cords.

Question 5

Which of the following statements is LEAST-Likely true?

A)Timing belts are quieter than timing chains.
B)Timing chains are less efficient than timing belts.
C)Timing belts do not require lubrication.
D)Timing belts cannot resist stretching.

Question 6

V-ribbed belts can be used in a conventional loop, but they are often installed in a ____________________ configuration.

Question 7

While having a discussion, Technician A says that a glazed belt must be replaced because it will not grip the pulley tightly. Technician B says that if tension on a glazed belt is adjusted at specification, there is no need to replace it. Who is correct?

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

Question 8

Timing belts were introduced in the 1980s.

Question 9

The spring-loaded tensioners used with ____________________ belts have a belt length variation gauge.

Question 10

Which of the following statements is LEAST-Likely true?

A)Power steering reservoirs are made of steel.
B)Do not pry on the power steering reservoir or any other delicate part.
C)Prying against unreinforced sheet metal will cause a dent, which can damage internal components of the pump.
D)A click-type belt tension gauge is used for measuring tension on V-ribbed and timing belts.

Question 11

Accessories are MOST-Likely driven with a belt from the:

A)ferrule
B)crankshaft
C)solenoid
D)armature

Question 12

____________________ belts are usually ribbed on one side and flat on the other.

Question 13

High ____________________ belts are stronger but require more material to manufacture.

Question 14

The rubber material in timing belts can be either high-temperature ____________________ or highly saturated nitrile (HSN).

Question 15

The surface finish of a pulley is more important with a V-ribbed pulley than with a V-type pulley.

Question 16

Used V-ribbed belts should have ____ pounds of tension per rib.

A)10 to 15
B)15 to 20
C)20 to 25
D)25 to 30

Question 17

While having a discussion, Technician A says that unevenly spaced cracks on the face of a neoprene V-ribbed belt are normal. Technician B says if there are cracks, they should be replaced. Who is correct?

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

Question 18

All of the following statements are true EXCEPT:

A)when a belt is overtightened, parts can be overloaded.
B)a slipping belt can result in several problems, including severe engine damage.
C)too little tension can cause the belt to slip and the alternator not to charge.
D)belts stretch slightly in the first few minutes of operation, and then continue to stretch.

Question 19

Polyester cords are stronger than the fiberglass cords found in conventional belts, but they are more fragile.

Question 20

A belt that is too long can rub on a radiator hose or fuel line after tension is adjusted.

Question 21

What factors should you bear in mind when replacing a V-ribbed belt, and belt information is not available?

Question 22

In the earlier days of V-belts, some shops used belt dressings to help a belt to grip. Do you think there was a problem with this? Give reasons for your answer.

Question 23

What is the function of the internal damper that is found on some tensioners?

Question 24

How is tension controlled in V-ribbed belts that have "locked center" drives?

Question 25

What precautions should you take before replacing a belt?