AST Questions and Answers Rated A

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