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sherman
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wd45tim View Drop Down
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Joined: 28 May 2014
Location: Indiana
Points: 10 		Post Options Post Options   Thanks (0) Thanks(0)   Quote wd45tim Quote  Post ReplyReply Direct Link To This Post Topic: sherman
    Posted: 21 Dec 2019 at 10:51am
Looking to buy a sherman under drive transmission, found an overdrive, the seller
says you can switch gears to make it an under drive. is he correct? Ive read
other posts where that cant be done, just wondering whose right.wd45tim
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lowell66dart View Drop Down
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Joined: 10 Jul 2013
Location: Paulina La.
Points: 964 		Post Options Post Options   Thanks (0) Thanks(0)   Quote lowell66dart Quote  Post ReplyReply Direct Link To This Post Posted: 22 Dec 2019 at 8:32am
This may help.
AC 6080 (8030,7060,200,175,D-17HC, 6040,160,6140 all gone) Farmall 1066 & 656 Hi-Clear (for sale), White 2-62 High Clearance, JD 4255 Hi Clear.
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DrAllis View Drop Down
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Joined: 12 Sep 2009
Points: 20528 		Post Options Post Options   Thanks (0) Thanks(0)   Quote DrAllis Quote  Post ReplyReply Direct Link To This Post Posted: 22 Dec 2019 at 10:13am
To my knowledge, there were two companies that made overdrive/underdrive units for WC/WF/RC tractors. One was Sherman and the other was Heisler. I too have heard that gears could be switched around, but don't know that to be fact. I'm sure you (back in the day) could have purchased the different ratio gears to install them into a gearbox already in service, but to just switch around existing gears, I'm not so sure. The literature provided on that website makes no mention of being able to so such a thing. If that was true, why would they have had two different pieces of literature?? They would have had one piece of advertising calling it an "under-drive and an overdrive", just switch the gears around like changing sprockets on a corn planter.
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