Drum brake systems - Study guides, Class notes & Summaries

SOS Mechanic Certification - Brakes (Complete Solutions, Answered) 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 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 A rattle is a single piston disc brake assembly which goes away when the br...

CDL Class B - Air Brakes Questions and Answers Graded A+ Air brakes use ____ to make the brakes work. Compressed air The ____ brake system applies and releases the brakes when you use the brake pedal during normal driving. Service The _____ brake system applies and releases the parking brakes when you use the parking brake control. Parking The ______ brake system uses parts of the service and parking brake systems to stop the vehicle in a brake system failure. Emergency What...

Aumt Brake Final Exam with Complete Solutions Tech A says that parking brakes on drum brake vehicles use separate brake shoes for backup in an emergency. Tech B says that parking brakes on drum brake vehicles mechanically operate the standard drum brake shoes. Who iscorrect? - CORRECT ️️ Tech B Which of these drum brake systems uses servo action in both directions? - CORRECT ️️ Duo-servo drum brake systems Tech A says that brake shoe linings saturated with brake fluid from a leaky...

CDL Air Brake Questions and Answers 100% Pass Modern air brake systems combines three different systems. service brakes, parking brakes, and emergency brakes Oil and water usually collect in compressed air tanks. If you do not have an automatic tank drain, when should you drain the air tanks? After every working day. Why drain water from the compressed air tanks? Water can freeze in cold weather and cause brake failure. Air brake equipped vehicles must have: A supply pressure g...

Aumt Brake Final Exam |Complete Questions with Graded A+ Answers Tech A says that parking brakes on drum brake vehicles use separate brake shoes for backup in an emergency. Tech B says that parking brakes on drum brake vehicles mechanically operate the standard drum brake shoes. Who iscorrect? Tech B Which of these drum brake systems uses servo action in both directions? Duo-servo drum brake systems Tech A says that brake shoe linings saturated with brake fluid from a leaky wheel cy...

CDL Air Brake Questions and Answers 100% Pass The air loss rate for a straight truck or bus with the engine off and the breakers applied should not be more than: D. 3 psi in one minute. Which of the following statements about brakes is true? A. The heavier a vehicle or faster it is moving, the more heat the brakes have to absorb to stop it. The purpose of the engine retarders is to: B. Help slow the vehicle while driving and reduce brake wear. If your vehicle has an alcohol eva...

Aumt Brake Final Exam |Complete Questions with Graded A+ Answers Tech A says that parking brakes on drum brake vehicles use separate brake shoes for backup in an emergency. Tech B says that parking brakes on drum brake vehicles mechanically operate the standard drum brake shoes. Who iscorrect? Tech B Which of these drum brake systems uses servo action in both directions? Duo-servo drum brake systems Tech A says that brake shoe linings saturated with brake fluid from a leaky wheel cy...

Aumt Brake Final Exam |Complete Questions with Graded A+ Answers Tech A says that parking brakes on drum brake vehicles use separate brake shoes for backup in an emergency. Tech B says that parking brakes on drum brake vehicles mechanically operate the standard drum brake shoes. Who iscorrect? Tech B Which of these drum brake systems uses servo action in both directions? Duo-servo drum brake systems Tech A says that brake shoe linings saturated with brake fluid from a leaky wheel cy...

DMV CDL TEST QUESTIONS AND ANSWERS ALREADY PASSED You should know that brakes are fading when: You have to push harder on the brake pedal to control your speed on a down grade. The brake system that applies the use of the brakes when the driver uses the brake is the: Service brake system. The air compressor governor controls: When air is pumped into the air tanks. If your truck's air compressor has its own oil supply. When should you first check its oil level? Before driving. For air brake ...

CDL Air Brakes |Complete Questions with Graded A+ Answers After every working day Oil and water usually collect in compresed air tanks. If you do not have an automatic tank drain, when should you drain the air tanks? Why drain water from the compressed air tanks? Water can freeze in cold weather and cause brake failure. The air brake system for a straight truck or bus should not leak at a rate of more than __________ psi per minute with the engine off and the brakes released. 2 ...