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Final Drive Difference

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PVF1799
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Tractors Owned: 1929 Farmall Regular #T111250 (Original Owner)
1942 Farmall M #55654
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1955 Farmall Cub #190769
1961 Cub Cadet #16509
1975 Cub Cadet 1250H
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Attachments: Woods 42F Fast Hitch, L38 Disc Fast Hitch, F11 Plow Fast Hitch, Land Plow, Snow Plow, Grader Blade, Planter w/Fertilizer, Cultivators, Hilling Disks, Sickle Bar Mower(2), IH 7' Sickle Bar Mower, Flail Mower and 5' International Belly Mower.
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Final Drive Difference

Postby PVF1799 » Mon Sep 09, 2013 8:13 pm

Well on most in not ALL FCUBS - except Rex '48 the cap screws and bolts that hold the final drives on are 3/8". Apparently when our left final drive was welded before we purchased it - they also - drilled and tapped the differential housing and final drive to 7/16". Imagine my surprise on assembly - did not notice the difference when we took Rex apart. This newbie - tore the manuals apart looking for reference to 7/16" Cap Screws....

Over dinner I surmised that it must have been customized for some reason when it was welded. - My Cub is now really special - Guess I would NOT have been putting the left on the right as I thought early on in my restoration.

Ken

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Boss Hog
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Re: Final Drive Difference

Postby Boss Hog » Mon Sep 09, 2013 8:33 pm

More than likely the threads were stripped out when the finial broke [ on account of loose bolts ] and they were drilled and tapped to 7/16. I have seen a few like this.
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tst
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Re: Final Drive Difference

Postby tst » Mon Sep 09, 2013 9:02 pm

check the drill size for a 3/8 16 heilacoil, you still might be able to put heilacoils in it to make it 3/8" again
Tim

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PVF1799
10+ Years
10+ Years
Posts: 1475
Joined: Fri Mar 15, 2013 9:46 pm
Zip Code: 12009
eBay ID: kepara
Tractors Owned: 1929 Farmall Regular #T111250 (Original Owner)
1942 Farmall M #55654
1948 Farmall Cub #21005
1955 Farmall Cub #190769
1961 Cub Cadet #16509
1975 Cub Cadet 1250H
197x IH 990 Haybine
1994 JD 5320 Diesel
Attachments: Woods 42F Fast Hitch, L38 Disc Fast Hitch, F11 Plow Fast Hitch, Land Plow, Snow Plow, Grader Blade, Planter w/Fertilizer, Cultivators, Hilling Disks, Sickle Bar Mower(2), IH 7' Sickle Bar Mower, Flail Mower and 5' International Belly Mower.
Circle of Safety: Y
Location: Altamont, NY
Contact:

Re: Final Drive Difference

Postby PVF1799 » Mon Sep 09, 2013 9:10 pm

tst wrote:check the drill size for a 3/8 16 heilacoil, you still might be able to put heilacoils in it to make it 3/8" again
Tim


3/8 helicoil takes 25/64 drill - Know that because I just put a helicoil in the block. If I did that - how would I fix the 7/16" hole in the final drive housing? I'm tempted to just leave well enough alone - we used Rex as he was from 1965 till this March.

Ken


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