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

A driver finds oil on a brake lining but air gauges are normal. What is correct?

The defect matters only on trailers The contaminated lining is still a foundation brake defect Normal pressure makes the lining safe The oil proves the air dryer works

Correct Answer:

The contaminated lining is still a foundation brake defect

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