RE: Dock walk

Only thing to do is to slide the tandems all the way to the rear to prevent the sag and forward movement. It will also keep the floor height even with most docks.

 

If you have a manual dump valve dump the air before you back in. My wagon did the same thing only opposite if the air was dumped, it would re-inflate when I push the button in, anywho if you don't have a dump valve put one in (pretty simple, just a ball valve and some connections)

 

just what I was going to say

 

More info on the dump valve please? I need to have one in mine but not sure how to do it. I know a valve to dump the air but how do I cut off the incoming air? Since all the air bags are filled from the same source I considered a normally open air solenoid for the incoming and a normally closed for the air release wired to the same switch. When activated the would go opposite of normal position closing incoming air and opening the release valve. Does this sound right? Simpler sytems ideas more than welcome. Thanks

 

forget all the fancy electrical stuff. I will take a closer look at some of our wagons, some have a factory valve and some just have a ball valve "t"ed into the supply to the bags

 

I assumed every new van/reefer came with the anti-dock walk suspension like Hendricksons Surelok. A manual dump would solve you problem. Some leveling valves have a manual dump option which is air operated.

 

I knew what you meant my wagon does the same thing, we use hydrolic dumpers to lift our trailers vertically to unload the wood chips and if you are not hard against the bumper the trailer will slide back and bend the legs (you don't want to make that call to the boss) anywho the air has to be dumped before we dump, and my wagon walks ahead about 8" so I dump the air before I back in all the way, that way when I bump the stoppers I stay there, long story short you need to override the auto dump or install some sort of manual dump

 

How does slidding tandems all the way back prevent dockwalk??
my 07 Great Dane would walk slightly no matter where the tandems were.
Hendrickson susp without auto dump. I installed manual dump valve and of course no more movement