Ontario Air Brake Z Test Practice Questions - Ontario Air Brake (Z Endorsement) Knowledge Test Exam

A low-air warning works, but one brake has excessive pushrod stroke. Why is the vehicle still unsafe?

Excessive stroke improves spring brake holding Warning and adjustment are separate; excessive stroke reduces brake force even with adequate pressure The warning automatically adjusts the pushrod Excessive stroke matters only with empty tanks

Correct Answer:

Warning and adjustment are separate; excessive stroke reduces brake force even with adequate pressure

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