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|Air suspension system||Bill||9-21-12|
|What is "normal" or "acceptable" on an RV air suspension system? Should it maintain pressure overnite? I can maintain 110-120 psi while traveling, but let it sit overnite and the coach is low in the rear or one side and the pressure in both systems is about 50-60 psi? I can hear air emitting from the bottom plastic hole of my Haldex dryer. Is it normal for it to bleed itself?|
|Re: Air suspension system||BUBBA THE BUS TECH||9-24-12|
|In the bus industry this may be acceptable.|
You have an air leak in the air suspension.
Your air dryer should never leak from the purge port (Bottom). The air dryer or the check valve at the wet tank is faulty. Rebuilt air dryers availabe from your local heavy truck parts shop and so are air bags and leveling valves.
Fire trucks and fancy coach conversions run an electric compressor to make up the air for leaks.