Flywheel woes

Farmall B & BN Tractors, 1939-1947

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T-Mo
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Zip Code: 63628
Tractors Owned: '44 B
'47 Cub
'50 Cub
194 Plow
54A Blade
42 Woods Mower
Henderson Loader
Circle of Safety: Y
Location: Bonne Terre, Mo

Re: Flywheel woes

Postby T-Mo » Tue Jan 14, 2020 3:06 pm

If I remember correctly, we changed one using a torch also.

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John *.?-!.* cub owner
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Re: Flywheel woes

Postby John *.?-!.* cub owner » Tue Jan 14, 2020 4:42 pm

Couple ideas, one is to put the flywheel in a freezer, that will shrink it to the point not as much heat is required. Rather than heating original ring gear to remove, use a .046 cutoff wheel in a hand grinder to cut almost through it in a a couple places not too far apart. Once that is done, usually a chisel in one of the cuts, or a punch on the side will frequently finish it. be careful not to cut into the flywheel, and wear safety glasses.
If you are not part of the solution,
you are part of the problem!!!

Jim Becker
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Re: Flywheel woes

Postby Jim Becker » Tue Jan 14, 2020 6:13 pm

Could be wrong, but as I recall their may be a small flange on the flywheel that the ring gear needs to go over. Try not to knock the flange off while removing the old gear.

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T-Mo
501 Club
501 Club
Posts: 1494
Joined: Tue May 16, 2017 9:25 am
Zip Code: 63628
Tractors Owned: '44 B
'47 Cub
'50 Cub
194 Plow
54A Blade
42 Woods Mower
Henderson Loader
Circle of Safety: Y
Location: Bonne Terre, Mo

Re: Flywheel woes

Postby T-Mo » Tue Jan 14, 2020 7:20 pm

Thanks, John and Jim, for the advice. It does help.

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T-Mo
501 Club
501 Club
Posts: 1494
Joined: Tue May 16, 2017 9:25 am
Zip Code: 63628
Tractors Owned: '44 B
'47 Cub
'50 Cub
194 Plow
54A Blade
42 Woods Mower
Henderson Loader
Circle of Safety: Y
Location: Bonne Terre, Mo

Re: Flywheel woes

Postby T-Mo » Wed Jan 15, 2020 9:46 am

Dale has a splitting stand for a Super A, can anyone tell me if the holes on an A is the same as a B? I would think so, but I'm not sure.

Jim Becker
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Re: Flywheel woes

Postby Jim Becker » Wed Jan 15, 2020 12:12 pm

Forward holes in the bell housing? A and B are the same. Super A, they are reversed. It may switch side-to-side to move from Super A to A or B.

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T-Mo
501 Club
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Posts: 1494
Joined: Tue May 16, 2017 9:25 am
Zip Code: 63628
Tractors Owned: '44 B
'47 Cub
'50 Cub
194 Plow
54A Blade
42 Woods Mower
Henderson Loader
Circle of Safety: Y
Location: Bonne Terre, Mo

Re: Flywheel woes

Postby T-Mo » Wed Jan 15, 2020 12:22 pm

Thanks, Jim.

On a somewhat related note, hand cranking this B without the starter. I hear a lot of horror stories, and a lot this is how you do it type stories. I ran across this video and wanted to get other's opinion and experiences with hand cranking.

https://www.youtube.com/watch?v=cIHHdxCmuS0

Of course, I want to fix the flywheel so I can just hit the starter thingy, but in the meantime.....

Jim Becker
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Posts: 14555
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
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Re: Flywheel woes

Postby Jim Becker » Wed Jan 15, 2020 12:44 pm

As several other people commented after seeing that video, he demonstrated it with his thumb on the wrong side of the crank. An otherwise minor kickback and he would not have been gesturing a thumbs up at the end.

As I suggested back on page 1, until you fix the ring gear, you can use the crank to turn the engine a little bit, then take the crank out and start it with the starter.


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