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Old August 4th, 2011, 09:57 AM   #1
big86inthestixx
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Default Hydro assist cylinder

My surplus centers double acting hydro assist ram quit turning to the left or pulling the ram back in. what would cause this, i tore the ram apart and all the seals see good. I am going to rebuild it and put it back in, but since this it the first time i have ever taken a cylinder apart is there something i should be looking for?
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Old August 4th, 2011, 11:14 AM   #2
Kyle M.
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Can you cycle the ram by hand or unbolted from the jeep with the pump still hooked up? Could the ram be bent?
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Old August 4th, 2011, 11:40 AM   #3
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Your steering box valving.
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Old August 4th, 2011, 12:40 PM   #4
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So heres the deal, last night. I put a brand new durango box in drilled and tapped the box for hydro assist. hooked the cylinder to the box and i had the same issue as before the new steering box. So after a quick run around the block I came home and unhooked all the assist stuff and went for a ride. went perfect, except for my death wobble, which is cured with the ram. So with that said i assumed it must be the ram, so i rebuilt the ram. with a good rebuilt ram which moves easily with my hands out of the vehicle, I re installed the ram tin the jeep. Took it for a spin, still has the same problem.
when rebuilding the cylinder i checked the ram itself for straight with a metabo straight edge and it was perfect.

Now i am a little frustrated..thinking that the pressure line for the ram return is blocked from me threading the connector into the box, preventing flow to that side of the ram. If that makes sense, SO with that im going to pull that fitting and see if i can free up a little more room in the hole in the box.
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Old August 4th, 2011, 01:34 PM   #5
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so i think that was it. The new fittings i put on the new box were bottoming out in the left turn port and keeping the fluid from passing into there. I have it kinda rigged right now and it seems good. It could get better but, looks like ill buy me one of those caps for the end of your steering box that you can hook you hose to. That'll make it all better.

I guess something to keep in mind if you ever hear of it again.
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