CDL Air Brakes Practice Test #1
Brake drums.... - Answer- 1 Are bolted to the wheels 2 Are located at each end of the vehicle's axles 3 Hold the brake shoes and linings (All of the above). When the low pressure warning is activated, you should.... - Answer- Bring the vehicle to a safe stop while you still control the brakes. When the safety valve releases air, it means that.... - Answer- 1 The pressure has exceeded 150 p s i 2 Too much air is in the air compressor 3 Something is wrong, and you should have it checked by a mechanic (All of the above). In a single vehicle with a fully charged air system, air pressure loss, after an initial drop, should be less than.... - Answer- two p s i per minute. The service brake system.... - Answer- Applies and releases the brakes by using the brake pedal under normal driving. Your vehicle's single brake system needs adjustment if.... - Answer- The compressor cuts out between 70 to 90 p s i Some air brake systems have an alcohol evaporator which helps.... - Answer- Reduce the risk of ice in the air brake valves during cold weather. Air tanks should be drained.... - Answer- Once a day. The safety valve in the air compressor tank is set to open at.... - Answer- 150 p s i Compressed air is stored.... - Answer- In the storage tank. When you apply pressure to the brake pedal, you are.... - Answer- Pushing against a spring and against air pressure to the brakes. The air compressor is connected to the engine through.... - Answer- a Gears b Hoses (Both A and B). Which type of brake is the most common in commercial vehicles? - Answer- S cam brakes. An air pressure gauge.... - Answer- Shows how much pressure you are applying to the brakes.
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