hello-my youngest son has built a dump trailer, only to find his pump and cylinder will not work. now when he and his buddy hot wired it off the trailer, it lifted him up. now this pump and cylinder we have no way telling how old it is, only to go off the man that owned it before, and my son saw it work when it was mounted on a different truck.
we loooked for a tag no., on the case -none. it had some type of a screw and a plunger type thingee with some o-rings on it. but i do not see anything to let the air out, so the trailer will sit back down. jus thought i would run ideas past all of u fellas first. thanks-big jim-gotta go, been up all night watching son build this trailer of his-later.