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Allis Chalmers Discussion Forum
Show Parts for Model:

Re: Quick question on hydraulics

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Author  [Modern View]
Bob Bancroft

08-29-2013 03:57:12
97.73.64.144



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I just went out and looked to refresh my memory! The two forward holes are the ones across from one another. The left rear port, without the hold function, was originally hooked to the left lift cyl. Then that cyl. would be swung forward to operate the front cultivator. This set up allowed for the sequential LOWERING of the front vs rear cultivators. The "delayed LIFT" was more a function of the pump settings, as opposed to the hold control valve settings. The remote line was hooked to the left front port, giving it full hold control for trailed implements. Therefore, when hooked up the "factory" way, when using hold control on the lift arms, both cylinders lifted, but only the right one held when the hand lever was set for hold! This was not a problem for most implements. But with a heavy mounted implement, you can get a little flexing of the rockshaft, and a little drooping of the left side, when going to hold position. Original loader hook up was a tee plumbed in below the street ell on the right side, just inside the frame rail. So the lift arms were forced full up when using loader. None of this of course restricts anyone from hooking it up any way they want! I switched the left side cyl./remote lines to get full hold control on both rockshaft cylinders to hold up a heavy bush hog. I don't need hold on the remote.

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