Mr. Cruz Maxwell High School Brakes 2 ASE Test Prep

Two technicians are discussing brake backing plates. Technician A says if a ridge has formed on the pads where the shoes rest they may be filed to restore a smooth finish. Technician B says to apply bearing grease to reduce brake squeak. Who is correct?

• Technician A only
• Technician B only
• Both Technician A and B
• Neither Technician A nor B

A vehicle has a low brake pedal. Technician A says an improperly adjusted brake pedal could be the cause. Technician B says overheated brake fluid could cause this condition. Who is correct?

• Technician A only
• Technician B only
• Both Technician A and B
• Neither Technician A nor B

A technician is lubricating rubber brake components while performing a brake job. Technician A says to use a high temperature silicon based lubricant. Technician B says to use a good petroleum based lubricant. Who is correct?

• Technician A only
• Technician B only
• Both Technician A and B
• Neither Technician A nor B

Technician A says to adjust a height sensing proportioning valve while on the lift. Technician B says to adjust a height sensing proportioning valve at vehicle curb ride height. Who is correct?

• Technician A only
• Technician B only
• Both Technician A and B
• Neither Technician A nor B

The amber ABS fault light is illuminated on a vehicle's instrument panel. The vehicle contains a four channel permanent magnet sensor ABS brake system. All of these are true EXCEPT.

• Oversized tires will have an adverse effect on this ABS system.
• The gap between the sensor and the tone ring is critical with PM sensor operation.
• Permanent magnet sensor systems function well at speeds below 5 mph.
• Permanent magnet sensors and companion tone rings produce a AC frequency converted to DC pulses by the ABS controller.

A hydro-boost brake system has reduced braking performance. Technician A says to check the power steering system. Technician B says to check the vacuum check valve. Who is correct?

• Technician A only
• Technician B only
• Both Technician A and B
• Neither Technician A nor B

A vehicle with power assisted brakes has a hard brake pedal. Which of the following is LEAST likely to cause this condition.

• Master cylinder. 
• Vacuum check valve. 
• Brake booster.
• Low manifold vacuum.

A vehicle pulls to the left only when the brakes are applied. This condition is MOST likely caused by:

• A seized left front caliper.
• A restriction in the left front brake line.
• Leaking master cylinder cup seals.
• A seized right front caliper.

Technician A says accumulators are found only on non-integral ABS systems. Technician B says some integral ABS units contain high pressure accumulators that must be discharged before repair. Who is correct?

• Technician A only
• Technician B only
• Both Technician A and B
• Neither Technician A nor B

Technician A says ABS control units are programmed to ignore speed sensor input variations below a certain threshold. Technician B says a one-channel ABS system controls hydraulic pressure to the rear brake units. Who is correct?

• Technician A only
• Technician B only
• Both Technician A and B
• Neither Technician A nor B