CDL Air Brakes Part 2 Questions and Answers Already Passed

CDL Air Brakes Part 2 Questions and Answers Already Passed The air pressue should not drop more than 3 psi single , 4psi combination, 6psi combination of 3 + In one minute during an APPLIED leakage test What is a supply pressue gauge used for Guages tell you how much pressure is in the air tanks (true or false) The service brake system applies and releases the parking brakes when you use the parking brake control False (true or false) When air tank pressure rises to around 125 - 130 psi, the governor stops the compressor from pumping air True What are the maximum leakage rates for an AIR BRAKE SYSTEM Less than 2 psi single, 3 psi combination for one minute (true or false) The safety relief valve protects the air tanks and the rest of the system from building too much pressure. True Turn the electrical power on and step on and off the brake pedal to reduce air tank pressure. The low air pressure warning signal must come on before the pressure drops to less than 60 psi in the air tank How to test low pressure warning signal The air pressure should not drop more than 2psi single, 3 psi combination, 5 psi combination of 3 + In one minute during a. STATIC leakage test What are the maximum leakage rates for an air brake system in 1 minute Less than 2 psi single, and 3 psi in combo (true or false) A slack adjuster is a lever that connects the brake chamber push rod with the return spring False (true or false) The safety valve in an air tank usually set to open and release air at 150 psi True (true or false) Letting up on the brake pedal increases the air pressure and releases the brakes False Which direction does the S-cam force brake shoes when brakes are applied? It presses them against the inside of the brake drum After applying your brakes fully in a combination vehicle, your maximum air loss in one minute should be no greater then 4lbs per square inch What can legally hold a parking or emergency brake in position for a truck, truck tractor or bus Spring pressure On S-cam brakes what happens to the air when you push the brake pedal Air pressure forces out the push rod and moves the slack adjuster Where are foundation brakes found At each wheel Why should you be in the proper gear before starting down a hill So you only have to apply the brake just hard enough to feel a definite slowdown With dual air systems, the air pressure should build From 85 to 100 psi in 45 seconds The air compressor governor controls When air is pumped into the air tank An air tank in equipped with a drain valve to remove Water and oil Why does air braking take more time than hydraulic braking Because it takes time for air to flow through the lines to the brakes What are the two types of air tank drains Manually operated and automatic How often should you check the alcohol evaporator in cold weather Check the alcohol container and fill up as necessary every day