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Larry, while it's true that some vehicles leak down a lot less, Ken's brakes are well within the NHTSA pre-trip inspection sheet for air brake equipped vehicles. The 2 PSI leakage per minute is really very little when you consider how much of the system is constantly under pressure. As an old,(in both meanings),fleet mechanic where we had to do complete brake checks every 90 days, let me tell you that you can spend a lot of time looking for every little "fuzzer" in the system. If the NHTSA is happy with 2 PSI per minute, then don't sweat the small stuff. |
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