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DougG 
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Joined: 20 Sep 2009
Location: Mo
Points: 8371
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 Topic: How does a 7000 Allis have 12 speeds?
Posted: 30 Dec 2016 at 4:21pm |
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I think I've asked this question before, can't remember, any ways I kno a 7000 is just a glorified 200, but how did the engineering guys get 12 speeds in the 7000 ,tractor?
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Charlie175
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Joined: 11 Sep 2009
Location: Shenandoah, VA
Points: 6369
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Posted: 30 Dec 2016 at 4:27pm |
4 gears with 3 speed power shift.
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Charlie
'48 B, '51 CA, '56 WD45 '61 D17, '63 D12, '65 D10 , '68 One-Ninety XTD
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injpumpEd
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Joined: 13 Sep 2009
Location: Walnut IL
Points: 5123
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Posted: 30 Dec 2016 at 4:56pm |
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The 190/200 power director is high for direct drive, and then low is under drive or a gear reduction. The 7000 tractor added the third speed to the power director which is over drive. Works a lot like an Oliver/White Over/Under.
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210 "too hot to farm" puller, part of the "insane pumpkin posse". Owner of Guenther Heritage Diesel, specializing in fuel injection systems on heritage era tractors. stock rebuilds to all out pullers!
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DougG
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Joined: 20 Sep 2009
Location: Mo
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Posted: 30 Dec 2016 at 5:24pm |
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So more clutches in the PD? Another clutch pack ? Curious how this works
Edited by DougG - 30 Dec 2016 at 6:34pm
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MACK
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Joined: 17 Nov 2009
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Posted: 30 Dec 2016 at 9:23pm |
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Three splined shafts ( running different
speeds) coming into clutch assembly. Only one clutch pack engaged at a time. MACK
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DrAllis
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Joined: 12 Sep 2009
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Posted: 01 Jan 2017 at 9:44am |
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Low range (under-drive) has 4 discs.....Medium range (direct-drive) has 3 discs.....High range (over-drive) has 2 discs. These 70261212 clutch discs are stronger and transmit more torque than the older P.D. clutch discs and will not break in two. Direct fit into older tractors.
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