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JD 8640 clutch
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Jf2
Posted 5/31/2023 14:53 (#10251057)
Subject: JD 8640 clutch


New to me 8640. New clutch by Deere shop 200 hrs ago. I have only put about 60 hrs on tractor. Would grind a little going 2 to 3 if shifting to fast. Lost 10 gal Hygard when FC cylinder blew seal. Refill with Hygard and worked several hours OK. Today grinds into any range or speed gear. Tech checked clutch pressures and lube pressure. Clutch valve appears OK . All within spec.

Any ideas or what to check before split tractor.
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