Need info on installing a dump valve

Hey folks, I'm sure what I need to know is posted in here somewhere but I cant seem to find a clear enough explanation so I'm gonna ask for some advice. I've got a 98 utility combo spread, the leveling valve is on the rear axle and controls all 4 bags and I've stared at it trying to figure this out but I'm obviously missing something. I want to put a dump valve on the rear axle and control it electrically in the cab. I got the whole wiring thing covered, I'm needing to know what valves do I need, how to hook it up and any other info you all might know about it. I'm trying to prolong my tires as much as I can and I've heard a dump valve is a good start. Any help would greatly be appreciated and I hope everyone has a great new year and we all make some money

 

Try drawing it on paper. That's what I do on a plumbing project... and some staring!

All you need is one of these.

 

I tried drawing pictures, lookin at it then drawing a few more pictures and the end result was a bunch of pictures that looked like hell and a headache from staring

 

The line from the height control valve goes to the front bags and tees from them to the rear. Chop that line to the rear bags and put the valve inline. One port is supply, one port (common*) will go to the other half of the line you chopped that goes to the rear bags and the other port is vented to the atmosphere.

*common means that port will always be open to one (air supply) or the other (atmosphere) port.

 

Well I dont think mine is quite set up like that, I'll try to explain so bare with me....on the left and right side there is a 3/8 air line that runs from the front bag to the rear bag, then there is a T on each side kinda up on the top, off of those lines that come down behind the crossmember right behind the front axle that T into the line coming out of the HCV. the other line on the HCV goes to the air tank and the pressure valve for the air supply. so its like all the bags would drop if I put one on it instead of just the rear like I need. Whoever had this trailer before I got it installed a single line off the left rear bag to a ball valve with a gauge on it for who knows what but I can open it up and bleed the air off to squat the ### end. I'm just like #### could it be set up any more crazy

 

Aw heck I meant the rear bags not the front! Hey it's New Years Eve, I may or may not be sober! i'll go back and edit

 

here



just pretend the dump for all four bags ain't there. just imagine a straight line from the HCV to the T before the rear dump valve.

 

Cannot work with the valve there.
When you dump the rear axle,all the bags will lose pressure.

 

Just be careful when and where you dump the air off your rear axle out in public. The "right" DOT cop will pull you over and make you split weigh your trailers axles with the air dumped off the rear, just a little FYI.

 

Connect the dump line to an extra air tank, it will deaden the noise of the air exhausting.