[Farmall] 100 breaking crankshafts

[E. John Puckett]

I only have very little experience with 100/Super A, but do have a 
question.  does the journal show scoring or discoloration such as 
possibly lack of lubrication?  When reinstalling the pulley, the IH 
manuals recommend putting it in boiling water for a few minutes before 
installing.  This warms it enough to expand it but not enough to damage 
the seal when it slides into place.  If there is a threaded hole in then 
end of the crank, use a threaded rod and some spacers to pull it on 
rather than driving it on.

John Hall wrote:
> Dad got a call from a guy that has a Farmall 100 that likes to break 
> crankshafts. 3 of them thsu far. All running at low RPM when it 
> happened--tractor is never used for heavy pulling. All broke beside #1 
> journal. The guy said the last one lasted 3 years. Our thinking is 
> either #1 rod is twisted somehow or where the front main is, there is 
> something causing the block to move---cracked block, something funny 
> with a timing gear putting unusual pressure on that end of the crank. 
> The tractor is too old too say the mains weren't line bored correctly 
> at the factory. The guy asked is he possibly damaging the crankshaft 
> when he drives the front pulley on. Never heard of ithappening myself.
>
> What's your thoughts?
>
> John Hall
>
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-- 
 John
another one of them
*.?-!.* cub owners