Quiz Review 9, Trades & Technology - Automotive

1

A customer complained of hard shifting, particularly into first gear and reverse. Technician A says that the blocking ring may be worn. Technician B says that the clutch may be defective or out of adjustment. Which technician is correct?

2

A five-speed manual transaxle is noisy in all gears. Which is the least likely cause?

3

A growling sound is heard with the engine running and the transaxle is in neutral with the clutch engaged (foot off of the clutch pedal). What is the most likely cause?

4

The owner of a front-wheel-drive vehicle complains that the shift lever is difficult to move in all positions. Which is the most likely cause?

5

The owner of a vehicle equipped with a manual transaxle complained that gear clash was heard whenever shifting. Which is the least likely to be the cause?

6

A growling sound is heard when the engine is running and the transmission/transaxle is in neutral with the clutch engaged (foot off of the clutch pedal). The noise stops when the clutch pedal is depressed. What is the most likely cause?

7

A clutch is slipping. What could be the cause?

8

Which is the least likely location for the clutch linkage adjuster (clutch free-play adjustment)?

9

A customer of a manual-transmission vehicle states that the transmission shifts okay but the dash tachometer does not drop when upshifting. Technician A says that the clutch may be slipping. Technician B says that the cause may be a defective throw out (release) bearing. Which technician is correct?

10

What is a "Wig Wag" ?

11

What happens when your brake drums get very hot?

12

If your truck has a dual air brake system, and one of the systems is low on pressure:

13

If you are driving down a steep downgrade and have reached your safe speed of 40 mph, you would apply the service brake until your speed dropped to ____ mph.

14

To test air service brakes you should:

15

The stop light switch:

16

In ideal conditions a truck or bus with air brakes going at 55 mph would require the stopping distance of how many feet?

17

The proper use of the brakes when going down a long steep grade after selecting a proper gear is to brake until your speed is about ____ below the posted speed and release your brake.

18

If you do not have automatic tank drains, how often should you drain the oil and water from the bottom of compressed air storage tanks?

19

Modern air brakes combine three different systems. They are the service, the parking, and the ____ brakes.

20

If your vehicle has an alcohol evaporator, it is there to:

21

Your brakes are fading when:

22

It is not safe to drive a vehicle that has brake drums with cracks that are longer than ____ of the width of the friction area.

23

The supply pressure gauge shows how much pressure:

24

What can legally hold a parking or emergency brake in position for a truck, truck tractor, or bus?

25

The safety valve reduces pressure at ____ psi.

26

If air pressure is not built up within the correct amount of time, then:

27

Emergency stab breaking is:

28

The safety valve discharges automatically at the pressure of:

29

When brakes are applied, the brake shoes will press against the:

30

Air braking takes more time than hydraulic braking because:

31

The parking or emergency brake on a heavy vehicle can only be held in position by something that cannot leak away, like:

32

The most important thing to do when a low air pressure warning comes on is:

33

The use of brakes on a long and steep downgrade under normal conditions is only a supplement to:

34

Excessive heat caused by using your brakes too often can also cause:

35

To check the free play of manual slack adjusters of S-cam brakes, you should park on:

36

Which of these is NOT a proper time to apply the parking brakes?

37

All air brake equipped vehicles have:

38

Under normal conditions, in order to engage the parking brakes the driver should:

39

The S-cam:

40

The brake pedal in an air brake system:

41

An air brake system is fully charged at what psi?

42

The brake system that applies and releases the brakes when the driver uses the brake pedal is the ______ brake system.

43

Repeatedly partially increasing and pressing the brake pedal may result in:

44

It is accepted that too much heat caused by using your brakes too often can also cause:

45

Total stopping distance for air brakes is longer than that for hydraulic brakes due to ______ distance.

46

The air brake lag distance at 55 mph on dry pavement adds about ____ feet.

47

The braking power of the spring brakes:

48

The air loss rate for a straight truck or bus with the engine off and the brakes on should not be more than:

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Quiz Review 9, Trades & Technology - Automotive

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