Practice question What is pushrod stroke? The amount of fuel used while brakingThe distance from tractor to kingpinThe delay in steering movementThe distance the pushrod travels out of the brake chamber Answer: D — The distance the pushrod travels out of the brake chamber The correct answer is shown above. Try the full quiz for additional practice. Practice more: Ontario Air Brake Z Test Practice Questions - Ontario Air Brake (Z Endorsement) Knowledge Test Exam →