What are the maximum leakage rates?
Answer: 2 psi in a minute for single vehicles and 3 psi in a minute for combination vehicles. When applying 90 or more psi to the brakes the loss should be 3 psi per minute in single vehicles and 4 psi for combination vehicles in a minute.
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.