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Allis Chalmers Discussion Forum
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Hydrolic Hold Posiition

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Paulrl

06-20-2005 21:42:12




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I have all the settings as the manual says for the Hydrolics on my 1950 WD but it still creeps up or down making it hard to bush hog. Any more ideas? HELP




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Texas Denny

06-25-2005 07:42:03




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 Re: Hydrolic Hold Posiition in reply to Paulrl, 06-20-2005 21:42:12  
Paul, I had a WD with the chains as described by Dave Grubb. It worked fine. I don't know how your lower lift arms are connected to the upper lift arms. On my C, I just adjusted the connection until the hog was the correct position from the ground when the lift was all the way down. When removing the bush hog, disconnect the third point (if you use one - I don't). Lift the front end of the bush hog and set it down on blocks. Pull off the lift arms, pto and drive away. This is by far the simplest fix to your problem.

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Dave Grubb

06-21-2005 07:00:56




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 Re: Hydrolic Hold Posiition in reply to Paulrl, 06-20-2005 21:42:12  
Raise the mower all the way up and shut off the tractor. If the mower creeps down the hold valve is leaking internally. The valve is a ball and seat type of check valve. Get a new ball from a dealer and see if that stops the lowering. You can also turn the screw in that is on the end of the hold valve body to put more pressure on the ball. The screw is pushing against a spring that pushes against the ball and you may have to get some shims from a dealer to increase spring pressure without getting the screw too far into the valve body and restricting movement of the ball. Some guys have put a set of chains from the lift arms torque shaft to the hitch on the mower and just let the mower hang by the chains.

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