310T Steering and Suspension Systems 4

Question 1

What does Ackermann steering geometry ensure during a turn?

Accepted Answer

The inside front wheel turns at a greater angle than the outside wheel

Answer

Both front wheels turn the same angle

Answer

The outside front wheel turns at a greater angle than the inside wheel

Answer

Both front wheels remain parallel throughout the turn

Question 2

A technician notices the air pressure in one air spring on a rear tag axle is significantly lower than the other side. What is the MOST likely result?

Accepted Answer

Uneven load distribution causing axle thrust angle change

Answer

Increased caster on the tag axle

Answer

Higher than normal toe-out on turns

Answer

Reduced Ackermann effect

Question 3

When a hydraulic power steering pump is pressure-tested and output pressure is low at idle but reaches spec when the engine speed is increased, what is indicated?

Accepted Answer

A worn or faulty flow control valve

Answer

A leaking power steering gear

Answer

A collapsed high-pressure hose

Answer

A faulty pressure relief valve

Question 4

What is the function of the king pin inclination (KPI) angle?

Accepted Answer

Provides directional stability by creating a self-centering effect and reducing steering effort

Answer

Sets the amount of steering wheel return after a turn

Answer

Controls the maximum steering lock angle

Answer

Determines the amount of toe change during suspension travel

Question 5

A coach steering system uses an electric power steering (EPS) assist. The driver reports steering assist is present at low speeds but disappears at highway speeds. This is:

Accepted Answer

Normal operation — EPS reduces assist as speed increases for better road feel

Answer

A fault — EPS should provide full assist at all speeds

Answer

A sign of a failing EPS motor

Answer

Caused by a faulty vehicle speed sensor sending no signal

Question 6

Feathered (saw-tooth) wear across the face of a tire tread is a diagnostic indicator of:

Accepted Answer

Incorrect toe adjustment

Answer

Excessive camber

Answer

Overinflation

Answer

Worn shock absorbers

Question 7

What is the purpose of the drag link in a conventional truck steering system?

Accepted Answer

Transmits steering motion from the pitman arm to the steering knuckle or tie rod

Answer

Connects the two front steering knuckles to maintain parallel steering

Answer

Provides the primary pivot point for front wheel steering

Answer

Controls the rate of steering gear response