Auto 13-25

In a normally operating brake system, master cylinder secondary piston is activated by...

• Force from Brake Booster Pushrod

• Compensating Port Pressure

• fluid pressure between the primary and secondary piston

• Force from the metering valve

Tech A says that a Hydraulic Booster is usually repaired rather than replaced. Tech B says that a Hydraulic Booster is usually replaced rather than repaired.

• Tech A

• Tech B

• Both

• Neither

On drum brake systems, the Wheel Cylinders are always fastened firmly to the....

• Hub

• Brake Backing Plate

• Anchor

• Wheel Well

Technician A says to remove runout, reduce the rotor thickness by one-half the runout measurement. Technician B says if a rotor's thickness is less than the minimum thickness specification, machine the rotor until the runout is under .006 in. Who is correct?

• A only

• B only

• Both A and B

• Neither A or B

In a drum brake system, the rotational action of the brake shoes activates the self-adjuster linkage when the brakes are applied and the vehicle is.....

• Braking in either direction

• Moving forward

• Suddenly stopped

• In reverse

Technician A says to use heat to help remove a stuck caliper piston. Technician B says to lubricate rusted caliper pistons with clean brake fluid before reinstalling them. Who is correct?

• A only

• B only

• Both A and b

• Neither A or B

A Check Valve for a vacuum booster holds vacuum pressure and assures power assist capability when

• there is a loss of power assist

• there is a loss of brake fluid

• there is low engine vacuum

• master cylinder fails

Annual inspections of brake linings are recommended for all vehicles with more than

• 20,000 Miles

• 40,000 Miles

• 60,000 Miles

• 100,000 Miles

What are some advantages of disc brakes over drum brakes

• Better fade resistance

• Reduced pulling and grabbing

• Both are correct

• Neither is correct

Replace a caliper when its bore damage is in excess of

• .001 in.

• .005 in.

• .010 in.

• .015 in.