Posted by buickanddeere on July 02, 2011 at 19:46:47 from (216.183.149.144):
In Reply to: Re: 4020 hydrolics posted by lyle niemi on July 02, 2011 at 18:52:43:
There are two pumps. Neither will work if the trans screen is plugged, a trans divert valve stuck pen. Or the trans relief valve stuck. Are the trans oil cooler fins clean or plugged solid with 39+ years of oily mud? Is there a loader or any other hydraulic load on the tractor? Instead of willy nilly tearing the tractor apart and installing random new parts. Trouble shoot first with a pressure gauge and measure flow.
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