To check the free play of manual slack adjusters of s-cam brakes, you should:
A. Park on level ground and apply the parking brakes.
B. Park on a slight grade, release the parking brakes, apply the service brakes and watch for vehicle movement.
C. Park on level ground, chock wheels, release parking brakes and pull on the slack adjusters.
Answer: C. Park on level ground, chock wheels, release parking brakes and pull on the slack adjusters.
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.