Suspension and Steering

Question 1

What is the purpose of the suspension system

Answer 1

To maintain contact with the road, support vehicle weight, absorb and dampen and maintain wheel alignment

Question 2

What does Hookes Law state

Answer 2

That it takes twice the force to move a spring twice as far.

Question 3

What does Newtons First Law of Inertia state

Answer 3

That an object will stay at rest of in unified motion until acted upon by an external force

Question 4

What is the main function of a frame

Answer 4

To provide support for all chassis components

Question 5

What are the three main types of frames

Answer 5

Body over frame, Unibody and Subframe

Question 6

What is the purpose of springs

Answer 6

Support weight of vehicle and absorb road shocks

Question 7

What are four examples of springs

Answer 7

Coil, Air, Leaf, Torsion bar

Question 8

What are the three types of coil springs

Answer 8

Full open wire, Tapered wire closed and Pigtail

Question 9

What are the types of spring rates

Answer 9

Variable and linear

Question 10

What is Jounce

Answer 10

The upward motion when a vehicle hits a bump in the road

Question 11

What is Rebound

Answer 11

The downward motion of the suspension when it falls into a dip or hole

Question 12

What is added to the suspension to dampen and stop the up and down motion while on a bumpy road

Answer 12

Shock Absorber

Question 13

What is sprung weight

Answer 13

All of the vehicles weight that is supported by the springs

Question 14

What is unsprung weight

Answer 14

The weight of components not supported by the springs

Question 15

What are some examples of sprung weight

Answer 15

Body, Frame, Engine, Trans

Question 16

What are some examples of unsprung weight

Answer 16

Steering Knuckle, rear solid axles

Question 17

What are some types of shock absorbers

Answer 17

Double tube, Direct and indirect, Single and double, Air , Gas

Question 18

What is the most common shock absorber ratio used on passenger cars

Answer 18

50/50

Question 19

Describe the difference between tension and compression ball joints

Answer 19

Tension ball joints will release once loosened, compression will stay in place

Question 20

What is a load carrying ball joint

Answer 20

Supports the cars weight and is generally on the control arm that holds or seats the spring

Question 21

On a lower control arm carrying the spring rate is the ball joint a follower or load carrying, tension or compression?

Answer 21

Load carrying, tension

Question 22

What are the three stages of a variable rate spring

Answer 22

Inactive, Transitional, Active

Question 23

What gas can be found in some shock absorbers

Answer 23

Nitrogen

Question 24

Why is Nitrogen gas used in gas charged shock absorbers

Answer 24

To help reduce aeration

Question 25

What is the job of control arms

Answer 25

Used to locate wheel and allow up and down travel of suspension

Question 26

What does SLA stand for

Answer 26

Short and Long Arm

Question 27

What are the four types of independent suspension

Answer 27

SLA, McPherson Strut, Modified Strut, Twin I Beam

Question 28

What is a Live Axle

Answer 28

An axle that drives the wheels

Question 29

What is a Dead Axle

Answer 29

An axle that does not drive

Question 30

What component of the suspension can twist and help transfer movement from side to side during cornering

Answer 30

Anti - Sway Bar

Question 31

What are the two types of steering linkages found in automotive

Answer 31

Rack and Pinion , Parallelogram

Question 32

What safety feature was introduced in 1968 to the steering system

Answer 32

A collapsible steering column

Question 33

What steering linkage is found on larger vehicles

Answer 33

Parallelogram Type

Question 34

What are to main components of a Rack and Pinion

Answer 34

Toothed Rack, Pinion gear and worm gear

Question 35

What does worm gear preload do

Answer 35

Eliminates worm shaft endplay, prevents steering free play and vehicle wander

Question 36

Name the three steering systems

Answer 36

Manual, Hydraulic, Electric

Question 37

What type of ball joint allows free play

Answer 37

Load Carrying

Question 38

What are the two common SLA systems in use today

Answer 38

Coil Spring and Strut

Question 39

What vehicles commonly use leafsprings in the rear

Answer 39

Pickup Trucks

Question 40

What suspension can change ride height during operations

Answer 40

Automatic load- leveling air suspension

Question 41

Name the components of a steering gear or parallelogram linkage

Answer 41

Pitman arm, Idler arm, Centre Link, Inner and outer tie rods, adjuster sleeve

Question 42

When is hydraulic fluid pressure in the Power steering system the greatest

Answer 42

During steering assist when the wheels are held against the steering stops