Question:
To test the service brake test, you will need to have the trailer air supply valve in, parking brake in, and the hand brake released. How do you test the service brake?
A
Move slowly and apply the service brake to stop the vehicle.
explanation
Move slowly, less than 5 MPH, and apply the service brake with steady pressure. The vehicle should come to a smooth and even stop with no pull to one side or the other.
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