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JD 8770 24spd Powersync Transmission issue
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tornapart
Posted 9/28/2020 16:03 (#8519863 - in reply to #8519765)
Subject: RE: JD 8770 24spd Powersync Transmission issue


You have linkage problems or something. That transmission is half simple. It's a 4 range, 3 speed with a hi-lo in each speed. Your diagnosis makes no sense, as 1-2 are the same in every range. Same with 3-4, or 5-6. If it pulls in one range, it will pull in another. There is a planetary / brake assembly for the hi-lo, and it's sometimes called a clutch pack, but when it goes, all lo gears go, or all high gears. Also note that in the hi - lo unit, high is overdriven, lo is direct. Good luck sir.
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