Got Wrong 2

Question 0

The Function of the quick release valve in the secondary brake circuit is to:

Answer 0

Speed up the release of front brakes

Question 1

A quick release valve is often used in parking/emerg brake circuits to provide quick:

Answer 1

Application of the spring brakes

Question 2

When the compressor is in it’s unloaded cycle?

Answer 2

The inlet valves are held open

Question 3

In a relay emergency valve, the emergency piston moves down at ______psi and _____the inlet valve and______the exhaust valve

Answer 3

40-45psi
Close inlet valve
Open the exhaust valve

Question 4

What is different between a charging and non charging relay emergency valve

Answer 4

One way check valve

Question 5

This component is used to prevent compounding in the spring brake chambers

Answer 5

Double check valve
Or
Anti compounding valve

Question 6

CMVSS 121 states that the trailer supply valve must automatically apply at ?

Answer 6

50 psi

Question 7

What is a normal braking application pressure?

Answer 7

1-30psi

Question 8

If a body loaded truck comes to your shop with excessively worn front brakes, and rear brakes with very little wear what could be the cause?

Answer 8

Leaking treadle valve

Cracking pressure of rear brakes relay valve may be to high

Question 9

A properly adjusted foundation brake has to meet these 2 requirements

Answer 9

Pushrod travel must be less than stroke length

90-95 degree angle

Question 10

When preparing to install a spring brake chamber what should be done

Answer 10

Cage the the spring brake chamber

Question 11

Place the brake chamber into the appropriate brake assembly bracket. Tighten the holding nuts too?

Answer 11

100-140 ft lbs

Question 12

Red dash button should pop out at what psi after disconnecting glad hands

Answer 12

40-60 psi or higher

Question 13

Yellow dash button will pop out at what ____ psi

Answer 13

45-20 psi

Question 14

When visually inspecting the compressor mounting security look for

Answer 14

Cracked or damaged mounting brackets

Loose or missing fasteners

Question 15

A properly adjusted compressor drive belt will have a maximum deflection of

Answer 15

1/2 to 3/4 inch (12.70-19.05 mm)

Question 16

Dented or kinked air lines in the parking/emergency brake circuit could cause the spring brakes to:

Answer 16

Be sluggish when applied and released

Question 17

Before you attempt to mechanically cage spring brakes you should

Answer 17

Inspect spring brake chamber for damage

Question 18

Alberta CVIP states that a vehicle will fail inspection if the radial clearance between the camshaft and bushing is

Answer 18

0.085 inch (2.16 mm)

Question 19

Camshaft axial play should not exceed

Answer 19

0.030 inch (0.76 mm)

Question 20

Removing material from the inside diameter of a brake drum results in

Answer 20

Reduced strength and reduced ability to dissipate heat

Question 21

Stroke should be adjusted to:

Answer 21

As short as possible without brakes dragging

Question 22

Alberta CVIP states that an air brake equipped vehicle will be put out of service if the brake lining are worn below

Answer 22

5/16 inch (8mm)

Question 23

Alberta CVIP states that a vehicle will fail inspection if radial clearance is between camshaft and bushing is

Answer 23

.085 (2.1mm)

Question 24

Brake linings fail inspection if they are

Answer 24

5/16 “ (8mm) thickness

Question 25

Is the speed sensor part of the abs system?

Answer 25

No

Question 26

Tone rings are most commonly mounted to?

Answer 26

The wheel hubs

Question 27

Wheel speed sensor is positioned by

Answer 27

Pushing the sensor in until it touches the tone wheel

Question 28

Abs system specify that tire sizes must be within?

Answer 28

3/4”