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Machinery Forum Re: JD 2550 4X4 HYD. PROBLEM [ Expand ] [ View Follow Ups ] [ Post Followup ] [ Return to Forum ] Posted by doug@upr on November 19, 2003 at 21:46:10 from (205.188.208.167): In Reply to: JD 2550 4X4 HYD. PROBLEM posted by TOM K on November 19, 2003 at 18:08:12: i have seen when these models and their bigger brothers such as 2750-2950 & 55 series have hydr. problems, of course the first thing everyone looks at are the hydr. pumps, and usaully one or both fix the problem. i very simple fix that has come up a couple of times though is to take off your rear lift cover and reseal it, make sure to replace all the o-rings, and i believe that one goes between the cover and the trans housing, seals & o-rings become hard and allow oil to by-pass causing possible oil flow & pressure lose. also check for cylinder & rockshaft cracks since this will also cause the same problem Follow Ups: Post A Followup Name: E-Mail: Subject: Re: Re: JD 2550 4X4 HYD. PROBLEM Comments: Optional Link URL: Link Title: Optional Image URL: Email Notification: If you check this box, email will be sent to you whenever someone replies to this message. Your email address must be entered above to receive notification. This notification will be cancelled automatically after 2 weeks.