154 (2) Chassis systems

Customer complains of judder when braking, what should be checked on a service and with which tool?.

• Disc run out, dti.

• Wear on disc, feel.

• Disc thickness, micrometer.

• Measure disc, caliper and rule.

In relation to checking and adjusting front wheel adjustment, checks should be done in three wheel positions as this will show?

• If wheels are buckled

• Uneven tyre pressure.

• Track rod ends are correctly screwed in place

• Load is evenly distributed.

The steering angle which provide a self centring force to the road wheels is the?

• Swivel pin inclination.

• Castor angle.

• Ackermann angle.

• Centre angle.

An over inflated tyre will tend to?

• Overheat with prolonged use.

• Wear at centre of tread.

• Feathering of tread pattern.

• Wear at the outer edges of the tyre.

When carrying out a shock absorber bounce test, the number of bounces must not exceed?

• 4

• 5

• 3

• 6

Why is ABS fitted to vehicles?

• Prevent wheel lock up when braking.

• Brake quicker in all conditions.

• Stop shorter in all conditions.

• Stop brakes overheating.

Feathering of the front wheel tyre tread is usually caused by?

• Incorrect wheel balance.

• Incorrect wheel alignment.

• Buckled wheels.

• Incorrect caster angle.

Hydraulic suspension dampers operate by?

• Forcing air through valves to slow its movement.

• Compressing another spring of a different rate.

• Forcing oil through valves to slow its movement

• Compression of a rubber cone.

If slip angles of rear tyres are larger than the slip angle of a front tyre, a car will?

• Under steer.

• Bounce.

• Over steer.

• Skid.

On inspection, brake fluid stains are evident near the brake system, what should be checked next?

• Brake hose.

• Brake shoe thickness.

• Brake pad thickness.

• Brake fluid level