Final answer:
To test the free play in manual slack adjusters of S-Cam brakes, park on level ground, secure the vehicle with chocks, release the parking brakes, and manually pull on the slack adjusters. The correct option to check the free play of manual slack adjusters of S-Cam brakes is:c. Park on level ground, chock the wheels, release the parking brakes, and pull on the slack adjusters.
Step-by-step explanation:
To check the free play of manual slack adjusters of S-Cam brakes, the correct procedure is to park the vehicle on level ground, chock the wheels, release the parking brakes, and then pull on the slack adjusters. This method ensures that the vehicle will not move and that an accurate measurement of the slack adjuster's free play can be taken. Ensure the vehicle is secured and safe before attempting to check the slack adjusters. The correct option to check the free play of manual slack adjusters of S-Cam brakes is: c. Park on level ground, chock the wheels, release the parking brakes, and pull on the slack adjusters. This procedure is recommended to assess the free play or travel in the manual slack adjusters accurately. It helps ensure that the brakes are properly adjusted and that there is no excessive play in the system, which could affect the braking efficiency of the S-Cam brakes. It's important to perform regular checks and adjustments to maintain the safety and effectiveness of the braking system on commercial vehicles.