On trailer air lines, the service line is connected to "what" on the trailer(s) to apply more or less pressure to the trailer brakes?
Answer: Relay Valves
CDL MCQ
CDL
On trailer air lines, the service line is connected to "what" on the trailer(s) to apply more or less pressure to the trailer brakes?
Subscribe to:
Post Comments (Atom)
If the answers is incorrect or not given, you can answer the above question in the comment box. If the answers is incorrect or not given, you can answer the above question in the comment box.