Jetco Air Ride / Leveler system problems

[Chuck]

Does anyone have a manual or information for a Jetco air ride rear suspension/leveling system ?  I'm trying to resolve numerous leaks in different places including leaky manifold valves, a compressor that blows the fuse after running more than 10 minutes, etc.  I would like to replace the mechanical/pneumatic parts and valves with a more robust system and need to determine loads such as PSI shutoff, amps, etc.  I will probably have to keep the air bags style itself because of the way they are mounted (see picture, they are tied in with the other suspension parts) - they look pretty tough to upgrade and difficult enough to replace.  I have talked to the people at Jetco for parts and they carry old stock but no longer manufacture this system, so I'm pretty sure it's outdated. 

There is a control under the dash with a red light indicator to let you know that the compressor is filling.  There are three two-position toggle switches - left to right, the first one is for manual or automatic control, and the next two are for left and right manual up/down (fill/release).  This was a fairly impressive system for an 88 RV.

Thanks,
Chuck

[OldEdBrady]

My search of the topics only brought out an old post on air pressure on the bags.  And, that was something I DID want to know. (My truck has them.)

Maybe one of the experts on the site will have the info you need.  That is what usually happens with these subjects.

[Chuck]

Well...I have a Jetco manual now, not very pretty but a manual none the less.  I"ll be glad to share it, and I also redrew the wiring diagram since it was so sketchy and color coded it to make it easier to work with.  After reading the manual thoroughly I realized the importance of the radial arm that goes from the frame to the pivot plate on the passenger side.  It was broken at the mount and I just had it welded last Tuesday.  While doing so, I had to remove the dual rims and finally I was able to see the top of the air bag (air spring) which was quite interesting.  I knew that the air first goes into the square tube, but coming out it goes into the bag itself through a 3/4" air hose (see my pitiful sketch attached) which looks strange to me, and I'm still bewildered at why this hollow tube is atop of my springs.  I got out my soapy water combo and sprayed her down only to find many tiny bubbles that Dino would be proud of.  I got a screwdriver and tightened the wormgear clamp and sat there dumbfounded that I haven't discovered this until now!  Well I must admit I had to borrow tools to get the wheels off (I found that the lug wrench that came with it is obviously a prop) but I remedied that problem with an Ebay purchase today.  It must have been one of the major leaks because so far there has been no drop in two days!  While I was at it I cleaned both tires and wheels which look quite lovely now!  At least this gives me time to budget new air bags without biting the bullet!