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Coach Air Dump will not deflate system


ncjimgr
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Recently after getting to our RV lot in Crystal River, Florida I tried to use the air dump button on the dash to dump the air out of the air bags. I hear the click of the solenoid but could not hear any air and the system did not dump. On Labor Day I decided to look at the solenoid mounted on the firewall while my wife pressed the dump button. The unit was triggering but no air release. Checked the air output for bugs/blockages and it was clear. I pulled the 1/4" airline off of it (just aired the coach up) and no air come out of the line! Does anyone know if, 1) there is a second solenoid somewhere on the other end of the line and, 2) where is that line hooked in to the system to drain the air out of the air bags? I do not have a leak anywhere and the system is definitely not dumping. I want to check the other end and als follow the line to see if it is kinked.

Jim G
2006 Camelot
TST Rep

 

Edited by ncjimgr
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Do you know the make and type of your leveling system? HWH system would have a six pack of solenoid valves mounted on the frame between wheels of each axle. 3 pairs of solenoids, one for travel height, raise and lower, all mounted on a quite large rectangular manifold, hard to miss. There are exhaust ports on the manifold that might get plugged. Just take all the many times mentioned precautions supporting the chassis so it would not accidentally drop at you if you get under it and certainly don't just pull lines out if there if any air pressure in the system and don't have someone operate the dump while under it. Someone with similar coach would know more, I do not have suspension air valves on the firewall so my comment may not be very relevant to your coach without knowing the system make/type ...

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Ivan...I have hydraulic jacks for leveling (Power Gear) and the air dump is a separate system from that. It seems to have one solenoid mounted to the firewall that dumps the air in the suspension system. There is a dump switch on the dash which activates the solenoid. It has worked perfectly for the last 14 years (had to replace the solenoid once) and seems to be a very simple air dump. I can't imagine what would be blocking the air line?? Maybe someone with a 2006 Camelot (or similar) would have encountered this issue. It would be nice to know where this particular air line is coming from before I climb under the coach!

Jim G
2006 Camelot
TST Rep

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My situation was not exactly the same but my coach is a 2006 Diplomat.

When I dumped air only the back was going down.  It turned out to be a bad ground on the front solenoid.  So there is more than 1 dump valve/solenoid is what I am saying.  Perhaps the issue involves the rear solenoid.

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