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

Worn tie rod ends

Answer

Loose wheel bearing

Answer

Worn pitman arm

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

Controls axle windup during acceleration

Answer

Adjusts caster angle

Answer

Connects the steering gear to the axle

Question 3

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

Accepted Answer

Steering wheel free-play exceeding manufacturer specs

Answer

Preload torque at the input shaft

Answer

Pitman arm angle at center

Answer

Sector shaft end play only

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

Shock absorbers

Answer

Air spring bellows

Answer

Axle U-bolts

Question 5

Camber angle is described as positive when:

Accepted Answer

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

Answer

The top of the wheel tilts inward toward the vehicle centerline

Answer

The wheel leads the steering axis at the top

Answer

The wheel lags the steering axis at the top

Question 6

Which condition would MOST likely cause cupped (scalloped) tire wear on a steering axle?

Accepted Answer

Worn or weak shock absorbers

Answer

Excessive toe-in

Answer

Negative camber

Answer

Overinflated tires

Question 7

A technician is setting front toe on a Class 8 truck. After adjustment, the toe should be verified with the vehicle:

Accepted Answer

On a flat, level surface with the vehicle at proper ride height and steering centered

Answer

On a drive-on lift with wheels hanging

Answer

With the engine running to simulate road load

Answer

On a turn plate with the steering at full lock