2026 Montana Air Brakes CDL Practice Test 3

To check the free play of manual slack adjusters on S-cam brakes you should:

Stop on level ground and apply the parking brakes. Park on level ground, chock the wheels, and release the parking brakes. Park on level ground and drain off air pressure before adjusting.

Correct Answer:

Park on level ground, chock the wheels, and release the parking brakes.

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