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

A driver measures applied pushrod stroke with spring brakes applied and pressure at 70 psi. What is wrong?

It is correct because lower pressure is conservative It is correct only with wedge brakes It proves a defect without measurement It does not follow Ontario's method, which uses released spring brakes and 90 to 100 psi

Correct Answer:

It does not follow Ontario's method, which uses released spring brakes and 90 to 100 psi

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