HV04 - Chassis

What component is being indicated by X in the diagram?

• The Tyre Bead
• The Retaining Ring
• The Detachable Flange
• The Bracing Belt

Self-steer rear axles are sometimes affected by high speed wheel shimmy. This can be reduced by

• Increasing Tyre Pressures On The Rear Axle
• Reducing Tyre Pressures On The Rear Axle
• Fitting A Hydraulic Steering Damper To The Front Axle
• Fitting A Hydraulic Steering Damper To The Rear Axle

The Cords Of A Radial Ply Tyre...

• cross the tyre at 135^o to the bead
• cross the tyre at 45^o to the bead
• cross the tyre at 90^o to the bead
• cross the tyre at 180^o to the bead

The diagram is showing that...

• the front wheels are set with positive camber
• the front wheels are set with positive castor
• the front wheels are set with negative castor
• the front wheels are set with negative camber

A heavy vehicle with a raised tipper body will have:

• a high centre of gravity
• an increased critical mass
• a decreased critical mass
• a low centre of gravity

The diagram shows a simple pneumatic actuator. What force will be generated by the push rod?

• 150N
• 5000N
• 1050N
• 510N

A Heavy Vehicle Retarder will...

• be over-ridden by the ABS if the drive wheels begin to lock
• hold the vehicle stationary on a 1:6.25 gradient
• assist the service brakes during a roller brake test
• operate separately from all other systems on the vehicle

Which of the following is commonly used on heavy vehicle drive axles?

• A fully floating axle
• A semi-floating axle
• A three quarter floating axle
• A fixed axle

Pitch, when applied to vehicle suspension, is defined as:

• the maximum amount of vertical travel of the suspension
• a sudden vertical movement of one side of the vehicle
• a sudden vertical movement of the front or rear of a vehicle
• the outward tilt of the vehicle's bodywork during cornering

When using a roller brake tester, the brake pedal should be:

• pressed gradually
• released quickly
• pumped vigorously
• stamped on