A5 Brakes (ASE Style Questions #8)

Which of the following brake symptoms can be caused by wheel bearing problems?

• Pedal pulsation

• Brake pull

• Grabbing

• All of the above

Which component in the Hydro-Boost system provides power assist if there is a loss of hydraulic pressure to the system?

• Boost piston

• Check valve

• Accumulator

• Open-center spool valve

A customer complains that the parking brake will not keep his car stationary. The car has four-wheel disc brakes. Technician A says the caliper levers could be out of adjustment. Technician B says the brake shoes could need adjustment. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A or B

When replacing an integral hub/bearing assembly on a front wheel drive vehicle, all of the following must be EXCEPT:

• Brake rotor

• Brake caliper

• Steering knuckle

• Wheel

A wheel cylinder has been disassembled and corrosion and light scoring have been found in the bore. Technician A says the bore can be refinished using a small hone lubricated with cutting oil. Technician B says oversize pistons and cup seals can be installed if the hone removes too much material. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A nor B

Two technicians are discussing traction control systems. Technician A says that some traction control strategies do not use the brakes to control wheel spin. Technician B says that a fault in the ABS does not affect traction control. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A nor B

When rough machining a brake drum, the depth of cut and spindle feed rate should be:

• 0.010-0.015-in. at high feed rate

• 0.010-0.015-in. at low feed rate

• 0.005-in. at high feed rate

• 0.005-in. at low feed rate

In the test shown above, vacuum should:

• Exist on the engine side but not on the booster side

• Exist on the booster side but not on the engine side

• Exist on both sides

• Exist on neither side

Technician A says the number on the brake drum shown above indicates the maximum diameter, beyond which the drum should not be used. Technician B says the number indicates the maximum diameter the drum can be machined to. Who is right?

• Technician A only

• Technician B only

• Both A and B

• Neither A nor B

A vehicle's brake warning system schematic is shown above. All of the following could cause the brake warning light to stay illuminated EXCEPT:

• A short to ground between C105 and C201

• A stuck closed parking brake switch

• An open between C237 and C305

• A leaking wheel cylinder