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If it were mine, I wouldn't bother trying to find the leak or leaks. But There may be a few places to start that are easy. First if your bus is like the ones we work on, it has two tanks and two indicater needles in the one air pressure indicater. If it does and both are going down it is after the second tank, as there are two check valves in the system. One is between the compressor and the first tank and the other is between the first and second tank. If both are going down, check everything after the second tank. If not Start by removing the large line from the compressor and hold your finger over the line to see if it is "Bleeding" back. The next thing to check is the dash valve that releases the spring brakes. If it has air windshield wipers, check that valve. Next check the foot valve followed by the relay valve in the rear for the rear brakes. Like any other problem, start at the beginning (compressor) and work your way back. |
RV and bus conversion info since 1996.
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