Automotive certification

tech a says the drum brake should be removed to preformed the bleed procedure.

tech b says the fluid in the master cylinder should be kept during the bleed procedure.

• Tech a

• Tech b

• both

• Neither

A load sensing proportioning value increase fluid?

• Pressure to the rear wheels when the rear of the vehicle is weighted down

• Pressure to the Front wheels when the rear of the vehicle is weighted down

• Volume exiting the master cylinder to the rear wheels when the rear is unloaded

• Volume exiting the master cylinder to the Front wheels when the rear is unloaded

an out of round brake drum can result in

• Brake pedal pulsation

• loss of brake fluid

• shimmy in the steering system

• excessive brake pull on the opposite side.

Where on the wheel cylinder does the manufacturer locate the bleeder screw?

• To the extreme right

• To the extreme left

• On the top

• On the bottom

the self- energizing brake shoes of a drum brake system will

• Retract the wheel cylinder pistons more quickly

• generate additional stopping power

• reduce brake drum operating temperature

• reduce tendency for wheel lockup

he right drum brakes gran jut before coming to a stop on a light duty truck equipped with disc/ brake which of these could be the cause

• both rear drum machined to oversight limit

• excessive radial tire run out on the right rear

• a leaking metering valve

• contaminated brake shoes

one of the inside pads on a fixed caliper system is worn more than the other pads this could be caused by

• a restricted brake hose

• a stuck combination valve

• a restricted metering valve

• a stuck caliper piston

A vehicle equipped with a 4 wheel disc brake system has poor braking effieincy and a low brake pedal. The cause could be?

• a warped brake rotors

• a seized brake caliper piston

• seizd brake caliper slide pins

• an internal leak in the master cylinder.

a pulsation is felt when the brake pedal is applied. during a load test detects no pulsation while the parking brake (rear drum activated) is applied this could be caused by?

• out of round drums

• warped rotors

• worn shoes

• worn pads

Tech a says that some rotors should be machined on the vehicle.

tech b says that a rotor final cut should be machined at a high rotational speed who is right

• A

• B

• Both

• Neither