Braking, Steering, Suspension Test

Question 1

Where is the brake servo usually mounted?

Answer 1

Directly to the brake pedal

Question 2

What does the term hygroscopic mean?

Answer 2

Absorbs water from the atmosphere

Question 3

How will the leading brake shoe wear?

Answer 3

Wear faster than the trailing brake shoe

Question 4

If a tyre is marked 205/65R15, what is 15 inches?

Answer 4

The bead diameter

Question 5

In the diagram, what is component 1? (see question 5 on phone)

Answer 5

Brake adjuster

Question 6

In the diagram, components 8, 9 and 10 are… (see question 6)

Answer 6

Fluid seals

Question 7

If the front road wheel is set to tilt inwards at the top, what does it have?

Answer 7

Negative camber

Question 8

To still be able to stop a car, even if there is a serious leakage on one brake hose, what are cars fitted with?

Answer 8

A dual line system

Question 9

What is it important to do to maintain performance and safety requirements? (see question 9)

Answer 9

Fit replacement parts that mean original manufacturers specification

Question 10

On inspection, you notice brake fluid stains near the brake system. What would you check next?

Answer 10

The brake fluid level

Question 11

When fitting new brake calipers or other major brake parts, what is it good sense to also do?

Answer 11

Replace the brake fluid

Question 12

Which of the following pieces of information can be found in the workshop manual? (see question 12)

Answer 12

Vehicle’s specifications and settings

Question 13

On the service, the customer complains of a judder on braking. What would you check and which tool would you use to check it?

Answer 13

Check disc runout with a DTI gauge

Question 14

You suspect the front brake discs are warped. What would you check the discs with?

Answer 14

A dial gauge (DTI)

Question 15

Define ‘negative swivel axis inclination’

Answer 15

The outward tilt of the swivel axis (king pin inclination) when viewed from the front of the vehicle

Question 16

What is the name for the tyre section height expressed as a percentage of the section width?

Answer 16

The aspect ratio

Question 17

If you test a shock absorber by ‘bouncing’, what must the maximum amount of bounces not exceed?

Answer 17

3

Question 18

The Ackermann steering angle is designed so that…

Answer 18

The inner wheel turns at a greater angle than the outer wheel

Question 19

A vehicle has taper wear on the outer edge of one of the front tyres. What is it likely to have?

Answer 19

An incorrect camber angle

Question 20

What does the aspect ratio of a tyre affect?

Answer 20

The maximum tyre speed

Question 21

The suspension in the picture is known as what? (see question 1)

Answer 21

Multi-link suspension

Question 22

In the picture, what is the function of component 1? (see question 2)

Answer 22

To hold the brake pads in place

Question 23

What is the Ackermann steering angle designed to give?

Answer 23

A true rolling motion on corners

Question 24

What is negative offset in relation to steering angles?

Answer 24

When the centre line through the swivel pin intersects…

Question 25

The brake pad will feel spongy and have an excessive amount of travel if…

Answer 25

There is air in the brake system

Question 26

What will a buckled front wheel give?

Answer 26

Uneven tyre wear and inaccurate wheel alignment readings

Question 27

What will an over-inflated tyre will tend to do?

Answer 27

Wear on the centre of the tread

Question 28

What are out of balance front wheels likely to cause?

Answer 28

The steering wheel to shake

Question 29

In relation to steering geometry, what is the purpose of the ‘castor’ angle?

Answer 29

Provide a greater degree of self-centring

Question 30

Why is brake fluid periodically replaced during routine maintenance?

Answer 30

Because it absorbs moisture which lowers the boiling poiunt

Question 31

In relation to checking and adjusting the front wheel alignment, why should you check in 3 wheel positions?

Answer 31

It will show if the wheels are buckled

Question 32

What is a vertical movement of the body at the front then the back in turn called?

Answer 32

Pitch

Question 33

In relation to vehicle behaviour during cornering, what is ‘understeer’?

Answer 33

When the slip angles of the front tyres are larger than the slip angles of the rear tyres

Question 34

‘Feathering’ on the front wheel tyre thread is usually caused by what?

Answer 34

Incorrect wheel alignment

Question 35

What is an indication that the front wheels may require balancing?

Answer 35

Steering wheel vibration that increases with vehicle speed

Question 36

Which component reduces the amount of times a road spring will bounce after the wheel hits a bump?

Answer 36

A damper

Question 37

A rear suspension system consisting of a solid rear axle with a spring and damper at each end is called what?

Answer 37

Non-independent rear suspension

Question 38

Why is electronic power steering preferable to hydraulic power steering on small engine cars?

Answer 38

Electronics take less power from the engine than hydraulics

Question 39

What does hydro-pneumatic suspension transfer?

Answer 39

Transfers road wheel movement via liquid to gas damper

Question 40

What does adaptive suspension use?

Answer 40

Hydraulic damping, controlled by sensors, actuators and an ECU

Question 41

How does hydraulic suspension dampens out spring movement?

Answer 41

Forcing oil through valves to slow its movement