Truck

Bruce SEKs · Mar 18, 2014

I need some advice on my 2 ton truck hoist. when I raise the bed the cylinders don't go up at the same speed. They both extend all the way at the top, they just don't get there at the same time

Janicholson · Mar 18, 2014

The idea that comes to mind is that the frame of the bed is tweaked and results in the cylinders balancing the bed with equal force but unequal distance. To check this possibility, put a heavy timber under the bed across the truck frame with a second wood block that will hold the bed from the center (centered between the rams of the lift) 20 inches from all the way down. If, when this blocking takes the bed weight, the bed is twisted, and can be seen to be so, the frame is tweaked. (it can be straightened but lets find out if it is bent first. Jim

rustred · Mar 18, 2014

is this a truck you have owned or just got?
like maybe someone replaced a blown hose with one of smaller or larger than the other one giving different flow rates to each cyl.

jerrybigrig · Mar 19, 2014

The slower cylinder could have an internal leak.

Bruce SEKs · Mar 19, 2014

I have owned it for awhile. Had pump rebuilt as it was leaking

Bruce SEKs · Mar 19, 2014

will give it a try

shaun wallace · Mar 19, 2014

Has twin mulpile stage oneway cylinders. The slow one has air in it. Will be bleed plug at top of each one.

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