System PartsQuestion 15 of 60
What is the purpose of the slack adjuster?
a.To adjust the clearance between the brake shoes and the drum
b.To store extra compressed air
c.To measure the vehicle's stopping distance
d.To warn the driver when the brakes are hot
Explanation
The slack adjuster connects the brake chamber pushrod to the S-cam and adjusts the clearance between the brake linings and the drum. As linings wear, the adjuster keeps them at the proper distance. Manual slack adjusters must be checked and adjusted, while automatic ones self-adjust.
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