Exam 52: Disc Brakes

Calipers are usually rebuilt rather than replaced.

Technician A says a fixed rotor has an integral hub inside which the wheel bearings are mounted. Technician B says a floating rotor is less expensive than a fixed rotor and can be replaced easily and economically. Who is correct?

To set or release an electronic parking brake, the driver holds the brake pedal down and presses or pulls the Parking Brake button.

What channels the flow of air over the exposed rotor surfaces?

After a road test, what six items should be checked before the wheels are pulled?

Front calipers are mounted to the____________________.

Technician A readjusts the wheel bearings before measuring lateral runout. Technician B resurfaces or replaces rotors that have more than 0.003 inch of lateral runout. Who is correct?

When replacing rear pads on actuating-type calipers, the piston must be kept from spinning as the C-clamp pushes the piston back into the caliper bore.

Brake calipers are being discussed. Technician A says the bleeder screw is located at the bottom of the cylinder bore. Technician B says the fluid inlet hole is located at the top of the cylinder bore. Who is correct?

Tapered roller bearings are being discussed. Technician A says the grease seal is installed on the outboard side of the bearing. Technician B says the outer cup, or race, is pressed into the hub. Who is correct?

The disc brake piston is made of steel, aluminum, or _____.

All manufacturers recommend honing the caliper bore when overhauling the calipers.

A caliper piston is typically removed using a block of wood and ____________________

Technician A uses a dial indicator to measure parallelism. Technician B uses a dial indicator to measure runout. Who is correct?

Disc brake rotor conditions are being discussed. Technician A resurfaces the rotor if it has lateral runout, lacks parallelism, or is scored. Technician B resurfaces both the left and right rotors even if only one rotor has problems. Who is correct?

Linings are ____ to disc brake pads.

A hard pedal (abnormally high amount of pedal pressure is required to stop the vehicle)normally indicates a problem with the ______.

A rear disc/drum parking brake uses the inside of each rear wheel hub and rotor assembly as a parking brake drum.

Unnecessary hard braking during the first 200 miles (320 km)of a brake pad's life can glaze the pads.

Caliper pistons that have threaded adjuster pushrods and internally threaded adjuster nuts are found on ______.