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keith wd 
Silver Level
Joined: 17 Nov 2015
Location: michigan
Points: 56
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 Topic: Allis Chalmers 180 transmission question
Posted: 28 Jan 2017 at 8:07pm |
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Hi am working on are 180 and tractor jumps out of 4th gear and starting to take apart and wandering how hards is it to work on it and change the gear if any info will help.
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Allis dave
Orange Level
Joined: 10 May 2012
Location: Northern IN
Points: 3016
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Posted: 28 Jan 2017 at 8:14pm |
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skipwelte
Orange Level
Joined: 29 Oct 2009
Location: Anthon, Iowa
Points: 723
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Posted: 28 Jan 2017 at 9:27pm |
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You can split the tractor between the eng and torque tube, remove the power director and remove 4th gear, usually if the splines on the gear are worn, the coupler is also worn and you have to remove the trans main shaft to get the coupler out. That intails removeing final drives, ring gear and press the main shaft reward-a lot of work. If there is to much end play on the gears on the main shaft you can install a thicker snap ring on the front of the main shaft and help the jumping out when going on a push. Ive also reground the shift detents on the shift rails to allow the coupler to slide deeper on the splines-helps to stay in gear and Ive made the detents deeper to make it harder to slip out of gear. Now if the splines on the gear are worn round and chipped-nothing will probably work except replacing parts. HTH
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DSeries4
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Joined: 12 Sep 2009
Location: Ontario, Canada
Points: 7460
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Posted: 29 Jan 2017 at 9:58am |
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Gear jumps are never an easy fix. Lots of work and lots of money on parts. I've had 3 transmissions done. Average is around $2000 in parts alone.
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'49 G, '54 WD45, '55 CA, '56 WD45D, '57 WD45, '58 D14, '59 D14, '60 D14, '61 D15D, '66 D15II, '66 D21II, '67 D17IV, '67 D17IVD, '67 190XTD, '73 620, '76 185, '77 175, '84 8030, '85 6080
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DrAllis
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Joined: 12 Sep 2009
Points: 21571
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Posted: 29 Jan 2017 at 1:23pm |
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I've fixed a couple dozen One-Eighty's by a new deeper shift 3-4 rail, a new fork and double detent springs. All done by removing the shift cover.
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