BCM Community
Bus Discussion => Bus Topics ( click here for quick start! ) => Topic started by: Bustle on September 29, 2021, 06:09:30 AM
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I am trying to track down this rear driver side air bag leak on a 95 D3. I've heard it hiss on the right side of the bus by the drive axle. Does anyone have the air line schematic thing for D3? The bus is stripped down to the floor, and I would like to take care of this leak if possible.
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Should be in your Maintenance manual center fold out. If you don't have one Gary Hatt has some on this site for sale too.
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I rigged up a Schrader fitting (like the inflation valve on a tire valve stem). Napa sells them. Hooked it up to a piece of tubing and connected it directly to air bag inlet and inflated it to about 75 lbs. Checked my adapter and tubing with soapy water to ensure no leaks. Checked it next morning. First bag checked was ok. Second time on other bag on same side, went flat overnight. If both checked ok, then it would be lines or leveling valve. Valves are cheap enough anyway, should replace while you are at it unless recent.These were rolling lobe bags.
I wouldn't worry about ride comfort on the old style. Just get the block off plates and move on. Leaking air beams are a pita.