Why wont my dump trailer go up?
Why wont my dump trailer go up? If trailer seems to attempt to dump, goes up a few inches and stops, it is likely that the hydraulic pressure from the truck is going into the wrong line/coupler. Double check to be sure that pressure line into the trailer is connected to the outermost (most roadside) connection on the trailer frame. How do you test a solenoid on a dump trailer? While pushing the up button probe the solenoid at the red wire, if the light is on the solenoid is getting power. While pushing the Down button probe the terminal...