If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. The belt should be: Before you start the test, please answer the question below regarding your insurance status. Without insurance you will not be able to drive in Ohio Do you currently have car insurance? Yes I have insurance. Great, you're all set! Click here if you still want to compare rates. No, I need insurance and I want to compare options. Question If a vehicle has air brakes, the air compressor drive belt should be checked before each drive. The belt should be: Answers Loosely attached. Tight. Cracked. Frayed. Explanation When inspecting an air brake system with a belt-driven air compressor, it is important to check the condition and tightness of the belt. This questions appears in the following tests: Texas Class B Knowledge Test Texas Air Brakes