AST Questions and Answers Rated A
A grinding sqealing noise when brakes are applied indicates ✔✔worn out brake lining
On most vehicles, the pressure differential valve ✔✔Controls the brake-warning lamp
Technician A sa
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AST Questions and Answers Rated A
A grinding sqealing noise when brakes are applied indicates ✔✔worn out brake lining
On most vehicles, the pressure differential valve ✔✔Controls the brake-warning lamp
Technician A says theat the parking brake should be engaged while installing and adjustingdrum
brake components. Technician B says that if the parking brake prevents a brake shoe from
contacting the anchor, one should adjust the length of the parking brake cable ✔✔B only
Tech A says traction control systems help keep the rear wheels from spinning during
acceleration. Tech B says traction control systems use microcomputers to compare the drivers
intended path with the vehicles actual path. who is correct ✔✔A only
Energy of motion in a moving object is the definition of ✔✔kinetic energy
Drum brakes are adjusted to compensate for ✔✔lining wear
what brake bleeding method requires two technicians ✔✔manual bleeding
Tech A says a disc brake caliper can have 2 pistons. Tech B says they can have one. whos
correct? ✔✔Both are correct
what is the backing plates job? ✔✔A mounting surface for other brake parts
Tech A says the metering valve delays fluid pressure to the front disc brakes during hard brake
application. Tech B says a proportioning valve restricts fluid to the front disc to prevent lockup
✔✔A only
two most common types of brake fluid ✔✔DOT 3 and DOT5
Technician A says fluid will be visible on the face of the booster if fluid is leaking from its rear
seal. True or False? ✔✔True
During caliper reassembly all parts should be lubricated using? ✔✔Brake fluid
Federal Motor Vehicle Safety standards require that automotive aprking brakes be capable of
holding the vehicle stationary one a ______ degree grade ✔✔30
Two technicians are discussing visual inspection of drum brake systems. Tech A says that no
action needs to be taken if the backing plate shoe contact locations are grooved. Tech B says that
the adjuster lever should be rounded at the point where it contacts the star wheel. who is right?
✔✔Neither A or B
A brake system should be bled whenever ✔✔the hydraulic system is exposed to the atmosphere
Brake lines are made from... ✔✔Double walled steel tubing
Tech A says a sticking caliper piston could cause brake drag. Tech B says rotors machined
beyond the minimum thickness may casue brake pedal fade when the brakes are first applied.
who is right? ✔✔A only
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