310T Steering and Suspension Systems 3

Question 1

A truck driver complains of a steering wheel that pulls to one side only during braking. Which component is MOST likely the cause?

Accepted Answer

Seized or dragging brake caliper on one side

Answer

A brake caliper that drags on one side creates uneven braking force, pulling the vehicle toward that side only during braking.

Question 2

What is the purpose of the track bar (Panhard rod) on a solid front axle suspension?

Accepted Answer

Limits axle lateral (side-to-side) movement

Answer

The track bar restrains lateral movement of the solid axle, keeping it centered under the vehicle.

Question 3

When inspecting a recirculating ball steering gear, which measurement confirms internal wear?

Accepted Answer

Steering wheel free-play exceeding manufacturer specs

Answer

Excessive steering wheel free-play (lash) at center position indicates worn internal components in a recirculating ball gear.

Question 4

A coach experiences excessive body lean in corners. The air suspension ride height is correct. Which component should be inspected FIRST?

Accepted Answer

Stabilizer bar and end links

Answer

The stabilizer (sway) bar resists body roll; worn or disconnected end links allow excessive lean even when ride height is correct.

Question 5

Camber angle is described as positive when:

Accepted Answer

The top of the wheel tilts outward away from the vehicle centerline

Answer

Positive camber means the top of the tire leans outward (away from the vehicle), while negative camber means the top leans inward.

(310t) Truck and Coach Technician Certification Practice Test