Exam 112: Suspension System Principles and Components

In this illustration, identify the stabilizer bar.

Which component transfers vehicle weight to the wheels?

Technician A says that vehicles with less unsprung weight have better handling. Technician B says that the wheel and tire assembly are considered sprung weight. Which technician is correct?

What component(s) is(are) considered to be unsprung weight?

Which law states that the deflection of a spring is directly proportional to the applied force?

Which component supports the wheel and attaches to the control arms?

Two technicians are discussing air shocks. Technician A says that air is forced through small holes to dampen the ride. Technician B says that air shocks are conventional hydraulic shock absorbers with an airbag to control vehicle ride height. Which technician is correct?

A MacPherson strut is a structural part of the vehicle.

Technician A says that a constant rate spring has the same deflection rate throughout its entire range of compression. Technician B says that some coil springs have different diameters at the top and bottom of the spring. Which technician is correct?

A center bolt is used in what type of spring?

Technician A says that torsion bars can be re-installed on either side of the vehicle. Technician B says that torsion bars are often used on 4x4 trucks. Who is correct?

Two technicians are discussing torsion bars. Technician A says that many torsion bars are adjustable to allow for ride height adjustment. Technician B says that torsion bars are usually marked left and right and should not be switched side to side. Which technician is correct?

Two technicians are discussing MacPherson struts. Technician A says that in most applications the entire strut assembly rotates when the front wheels are turned. Technician B says that a typical MacPherson strut suspension system uses only one control arm and one ball joint per side. Which technician is correct?

Technician A says that all automotive coil springs have the same number of coils. Technician B says that coil spring spacers can cause damage to the spring. Which technician is correct?

Technician A says that most modern vehicles have independent front suspensions. Technician B says that no vehicle has an independent rear suspension. Which technician is correct?

Technician A says that each coil spring is specifically engineered to be installed on one particular side of the vehicle. Technician B says that rubber spring pockets prevent excessive noise. Which technician is correct?

Technician A says that cutting coil springs is an acceptable method of properly lowering a vehicle. Technician B says that all leaf springs are made of steel. Which technician is correct?

What term describes the weight of the vehicle with all fluids filled but no passengers or cargo?

Which of the following is NOT true?

Most trucks and larger RWD vehicles use which type of frame?