SOS brake & braking system Exam Questions and Answers 100% Pass

SOS brake & braking system Exam Questions and Answers 100% Pass In a single anchor bendix drum type rear brake - Correct Answer ️️ -the secondary lining is longer than the primary Compared to the secondary shoe lining areas of drum brakes, the primary shoe lining area is: - Correct Answer ️️ -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? - Correct Answer ️️ -flush the system before the new parts are installed In order to bleed the system on a vehicle equipped with power brakes: - Correct Answer ️️ -None of the above Which of the following could be a symptom of over-torqued lug nuts? - Correct Answer ️️ -A brake pedal pulsation during braking. Which of the following describes the proper sequence to bleed brake lines on most rear wheel drive vehicles: - Correct Answer ️️ -RR, LR, RF, LF In disc brake caliper assemblies, the "square cut seal" is usually located: - Correct Answer ️️ -In the caliper piston bore When performing a caliper overhaul, what would you use to remove the pistons from the calipers? - Correct Answer ️️ -Compressed air Sliding caliper disc brake pads are kept in adjustment by the - Correct Answer ️️ - Square cut piston seal A cracked or torn vacuum diaphragm in a power booster would likely cause: - Correct Answer ️️ -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? - Correct Answer ️️ -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: - Correct Answer ️️ -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? - Correct Answer ️️ - 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: - Correct Answer ️️ -Loose pads in the caliper Which of the following would most likely cause dragging brakes? - Correct Answer ️️ - 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? - Correct Answer ️️ -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? - Correct Answer ️️ -A broken shoe hold-down spring or pin If a drum brake self-adjuster seizes up, the likely result will be: - Correct Answer ️️ -A low pedal Which of the following can be used to check for rotor thickness variation? - Correct Answer ️️ -Dial indicator On a vehicle with a disc/drum brake system, the rear wheels lock up under hard braking. The most likely cause is: - Correct Answer ️️ -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? - Correct Answer ️️ -Replace the hub When adjusting disc-drum brakes, you should: - Correct Answer ️️ -Adjust the rear brakes after releasing the parking brakes What type of rotor surface provides the best braking with new pads? - Correct Answer ️️ -A smooth, flat surface Which of the following is a quick way to determine whether the master cylinder is bad? There are no external leaks in the system. - Correct Answer ️️ -Pump up the brake pedal, then hold it firm. If the pedal slowly drops to the floor, the master cylinder is bad. You are rebuilding a master cylinder. What should you use to lubricate the internal parts? - Correct Answer ️️ -Brake fluid Which of the following is the most likely cause of low fluid level in the master cylinder? - Correct Answer ️️ -Worn brake pads and linings After drum brakes have been applied and released, the brake fluid returns to the master cylinder reservoir. What causes it to return? - Correct Answer ️️ -Brake shoe return springs Which of the following describes the correct sequence for bleeding brake lines on most front wheel drive vehicles? - Correct Answer ️️ -RR,LR, RF, LF Technician A says that excessive pedal travel can be caused by low brake fluid levels; Technician B says that the excessive pedal travel can be caused by air i