Vehicle Steering and Alignment Quiz

How would the thrust angle usually be set on a light vehicle?

• by placing alignment gauges onto the front wheels and adjusting them to be parallel to the vehicle centre line

• by placing alignment gauges onto the rear wheels and adjusting them to be parallel to the vehicle centre line

• by placing alignment gauges onto the front wheels and adjusting them to be equal distances from the front of the vehicle

• by placing alignment gauges onto the wheels on the same side of the vehicle and adjusting them to be parallel to the centre line of the vehicle

With regard to a light vehicle, the camber angle is:

• the inclination of the road wheel, relative to the vertical axis when viewed from the front of the vehicle.

• the angle of the road wheel steering axis relative to the vertical, as viewed from above the vehicle

• the angle of the road wheel steering axis relative to the vertical, as viewed from the side of the vehicle

• the inclination of the road wheel, relative to the vertical axis when viewed from the side of the vehicle

Which steering angle gives a self-centering action on a light vehicle?

• swivel pin inclination

• negative offset

• camber

• caster

The amount of assistance provided by an electronic power assisted steering system (EPAS) is changed by:

• changing the delivered current to the motor in relation to the steering input shaft torque

• changing the gear ratio between the steering column and torque control unit

• changing the gear ratio between the steering column and steering rack

• changing the voltage to the motor in relation to the steering input shaft torque

An advanced ride control system, when applied to a light vehicle:

• monitors the pitch of the vehicle and is over-ridden by the drivers throttle and brake inputs

• monitors the yaw of the vehicle and is over-ridden by the drivers throttle and brake inputs

• monitors the pitch of the vehicle and over-rides the drivers throttle and brake inputs

• monitors the yaw of the vehicle and over-rides the drivers throttle and brake inputs

If the pump should fail in a hydraulic assisted power steering system:

• the mechanical steering system must still be able to operate

• the engine will automatically go in to reduced power mode

• the steering lock should automatically engage to stop the vehicle from being used

• the engine immobiliser should prevent the vehicle being used until the fault is fixed

The definition of the term caster angle is defined as:

• angle of the road wheel steering axis relative to the vertical, as viewed from above the vehicle

• inclination of the road wheel relative to the vertical axis, when viewed from the side of the vehicle

• inclination of the road wheel relative to the vertical axis, when viewed from the front of the vehicle

• angle of the road wheel steering axis relative to the vertical, as viewed from the side of the vehicle

A light vehicle with hydraulic power assisted steering is exhibiting heavy steering. What is the MOST likely cause?

• flow control valve stuck closed causing fluid to be returned to the inlet side of the pump

• Worn pressure pump rotors causing low output from high pressure pump

• worn swivel pin thrust pad causing stiff operation of the swivel pin

• high pressure control valve stuck closed preventing fluid leaving the pressure pump

One advantage of a vehicle fitted with EPAS over a vehicle fitted with hydraulic power steering is:

• improved fuel economy

• less steering effort

• no torque sensing required

• reduced steering rack ratio

When checking the maximum pressure of a rack and pinion hydraulic power assisted steering system you must ensure that:

• the steered wheels are placed on turntables

• the steered axles are lifted off the ground

• the passenger side wheel is prevented from turning

• both steered wheels are prevented from turning