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Home/Practice quizzes/Combination air brakes

Combination air brakes practice quiz

Choose an answer, read the explanation, then continue to the next question. Your results include a review of every answer.

Combination air brakesQuestion 9 of 200
Correct11%1 of 9 answered
Incorrect89%8 of 9 answered
ICBC guide illustration of an air chamber pushrod, slack adjuster and S-cam brake
Follow the mechanical movement from the chamber to the brake shoes.

In the illustrated S-cam brake, what does the chamber pushrod move first?

AThe slack adjuster, which rotates the S-camYour answerCorrect answer
BThe brake drum
CThe wheel hub
Correct.

Pushrod movement turns the slack adjuster and S-cam, forcing the linings against the drum. (Guide p. 149)

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Study aid only. These are not official ICBC exam questions, and practice scores do not predict an official test result.