Practice question
What should be checked if the rear trailer service brakes do not apply during a brake test?
- Air-line connections, shut-off valves, air supply, and brake defects before moving
- Only the windshield washer fluid
- Only the tractor fuel level
- Nothing if the lead trailer brakes work
Answer: A — Air-line connections, shut-off valves, air supply, and brake defects before moving
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