SOS brake & braking system study guide 2024

In a single anchor bendix drum type rear brake - the secondary lining is longer than the primary Compared to the secondary shoe lining areas of drum brakes, the primary shoe lining area is: - smaller and goes toward the front of the car During a brake overhaul, you notice that the brake fluid seems to be very dirty and dark in color. What should you do? - flush the system before the new parts are installed In order to bleed the system on a vehicle equipped with power brakes: - None of the above Which of the following could be a symptom of over-torqued lug nuts? - A brake pedal pulsation during braking. Which of the following describes the proper sequence to bleed brake lines on most rear wheel drive vehicles: - RR, LR, RF, LF In disc brake caliper assemblies, the "square cut seal" is usually located: - In the caliper piston bore When performing a caliper overhaul, what would you use to remove the pistons from the calipers? - Compressed air Sliding caliper disc brake pads are kept in adjustment by the - Square cut piston seal A cracked or torn vacuum diaphragm in a power booster would likely cause: - Hard pedal with very high effort required When the brakes are applied on a car with disc-drum brakes, a vibration or pulsating movement is felt. What can cause this problem? - A rotor thickness variation While test driving a car, the mechanic finds that the right front brake "grabs". The most likely cause of this problem is: - Brake fluid or grease on the brake linings. During a road test, you find that when normal breaking pressure is applied the pedal slowly goes to the floor. What is the likely cause of this problem? - A leaking master cylinder primary piston seal. A rattle is a single piston disc brake assembly which goes away when the brakes are applied is most likely a result of: - Loose pads in the caliper Which of the following would most likely cause dragging brakes? - A defective vehicle load sensor With the car standing still, you can hear a squeaking noise when applying the brake pedal slowly. What could cause this noise? - Dry backing plate contact surfaces. There is a scraping sound coming from one rear brake. The sound stops when the brakes are applied. What is the likely cause of the problem? - A broken shoe hold-down spring or pin If a drum brake self-adjuster seizes up, the likely result will be: - A low pedal Which of the following can be used to check for rotor thickness variation? - Dial indicator On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The most likely cause is: - A defective proportioning valve After putting a bearing race in a hub, you notice that the new race is loose and can spin in the hub. What should you do? - Replace the hub