Question 21 of 25
Score: 0/0With S-cam drum brakes, when the brake chamber fills with air, air pressure pushes the push rod out, moving the ________ and causing the ________ to rotate.
ExplanationIn S-cam drum brakes, air pressure pushes the push rod, which moves the slack adjuster and turns the brake camshaft to apply the brakes.
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Did you know? The static leakage test is a favorite — know the allowable pressure drop cold.
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