CDL Air Brakes | Study Guide ( Updated 2024 ) Complete Questions & Answers (Solved) 100% Correct

CDL Air Brakes | Study Guide ( Updated 2024 ) Complete Questions & Answers (Solved) 100% Correct 1. Oil and water usually collect in compresed air tanks.Ifyou do not have an automatic tank drain, when should you drain the air tanks? Answer After every working day 2. Why drain water from the compressed air tanks? Answer: Water can freeze in coldweather and cause brake failure. 3. 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 brakesreleased. Answer: 2 4. To make an emergency stop with air brakes, using the stab braking method,you should: Answer: Press on the brake pedal as hard as you can,release the brakes whenthe wheels locked, put on the brakes again when the wheels start rolling. 5. You should know that your brakes are fading when: Answer: You have to apply thebrake pedal harder to control speed on a downgrade. 6. If the air compressor should develop a leak, what keeps the air in thetanks? Answer: The one way check valve. 7. To check the brake slack on S-cam brakes you should park on: Answer: Park on levelground, chock the wheels, and release the parking brakes. 8. The application pressure gauge shows how much pressure you have: Answer: Whenyou are applying to the brakes. 9. The spring brakes used on the chambers in a straight truck will bring youto a stop when air pressure drops below psi. Answer: 20 10. The safety valve is set to automatically reduce pressure at psi. Answer: 150 11. Your truck has a dual air system and one system loses its pressure.Whatwill happen? Answer: Either the front or back brake will not be fully operational. 12. If your truck or bus has dual parking control valves, you can use pressurefrom a separate tank to: Answer: Release the spring emergency/parking brakes to movea short distance.