A driver says that the front end of his car vibrates up and down while traveling at most road speeds. Technician A says that too much runout of the front wheels could be the cause. Technician B says that static out-of-balance of the front wheels could be the cause. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A or B

A customer complains that a vehicle wanders on a bumpy road and needs continual driver correction to stay straight. What could be wrong?

• Excessive negative front caster

• Insufficient front toe

• Rear or front bump steer

• All of the above

When checking a tire, a technician finds it to have too much radial (up and down) runout. Technician A says to rotate the tire and wheel assembly on the mounting studs to correct the problem. Technician B says to rotate the tire on the wheel assembly to attempt to bring the runout within specifications. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A or B

The suspension shown below is being checked for ball joint wear. Technician A says the inspection can be made with the front end supported at point X. Technician B says that the inspection can be performed with the front end supported at point Y. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A or B

The ball joints on the MacPherson strut-type suspension are being replaced. Technician A says that a coil spring compressor should be installed before separating the control arm and the spindle. Technician B says that the wheel alignment should be checked after the ball joints have been replaced. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A or B

A customer complains of excessive body roll. Which of the following is the MOST likely cause?

• Broken stabilizer bar link

• Worn ball joint

• Weak coil spring

• Leaking shock absorber

Technician A says that the ride height of a vehicle is always adjustable. Technician B says that the ride height of a vehicle can only be adjusted on certain models. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A nor B

Technician A says that the wheel bearings shown below can be adjusted by tightening the nut while turning the hub, and then backing off the nut part of a turn. Technician B says the end-play in the bearings shown above can be checked using a dial indicator. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A or B

Tire cupping is most likely caused by:

• Worn shock absorbers

• Wheel imbalance

• Loose tie-rod ends

• All of the above

Which of the following is most likely to be lubricated and sealed by the manufacturer?

• Tapered roller bearings

• Plain bearings

• Ball bearings