Ontario Class F Practice Test · Question
When performing a pre-trip inspection on a vehicle equipped with air brakes, what is 'pushrod stroke' measuring?
The pushrod stroke of a brake chamber is a critical measurement. If the stroke exceeds the specified limit, the brakes are out of adjustment, significantly redu
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Question: When performing a pre-trip inspection on a vehicle equipped with air brakes, what is 'pushrod stroke' measuring?
Answer options:
- The thickness of the brake pads on the front wheels
- The pressure level at which the low-air warning device activates ✅ The distance the pushrod travels out of the brake chamber when brakes are applied
- The time it takes for the air compressor to recover from 85 to 100 psi
Correct answer: The distance the pushrod travels out of the brake chamber when brakes are applied
Explanation: The pushrod stroke of a brake chamber is a critical measurement. If the stroke exceeds the specified limit, the brakes are out of adjustment, significantly reducing braking efficacy and potentially leading to a failed inspection or accident.
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