[Farmall] 100 breaking crankshafts

[Al Jones]

With all the slow-speed tobacco setting and first cultivating these
tractors did, I can't imagine that the crankshaft would break just from
operating at low RPM's.  It looks to me like there must be an internal
fault somewhere.  Had the crankshafts been welded (welded up and turned
back down to spec)?

Al

-----Original Message-----
From: farmall-bounces at lists.antique-tractor.com
[mailto:farmall-bounces at lists.antique-tractor.com] On Behalf Of John
Hall
Sent: Monday, May 01, 2006 8:48 PM
To: Farmall/IHC mailing list
Subject: Re: [Farmall] 100 breaking crankshafts

Supposedly the guy was cultivating--shouldn't have hurt anything---but
then 
again I wasn't there to tell you if he was using it like it should have 
been. I hope I get to hear how this one turns out.

John

----- Original Message ----- 
From: "George Willer" <gwill at toast.net>
To: "'Farmall/IHC mailing list'" <farmall at lists.antique-tractor.com>
Sent: Sunday, April 30, 2006 8:51 AM
Subject: RE: [Farmall] 100 breaking crankshafts


> John,
>
> It's my understanding that the bearing caps can be milled down
slightly 
> and
> then torqued back up before the assembly is line bored back to
original
> size.
>
> The one thing in common with all 3 broken crankshafts is the operator
> working the engine at low RPM.  That's a no-no.  I think that is the 
> cause.
>
> George Willer
>
>> -----Original Message-----
>> From: farmall-bounces at lists.antique-tractor.com [mailto:farmall-
>> bounces at lists.antique-tractor.com] On Behalf Of John Hall
>> Sent: Sunday, April 30, 2006 7:25 AM
>> To: Farmall/IHC mailing list
>> Subject: Re: [Farmall] 100 breaking crankshafts
>>
>> If I ever here the "rest of the  story" on this one I'll be sure to
let
>> you
>> guys know. While it may not be proper to drive the pulleys on, I've
seen
>> it
>> done too many times without problem. Also seen it done properly using
a
>> piece fo threaded rod--my prefered method.  Another reason I doubt
that 
>> is
>> the cause is because the 1st shaft broke in the same manner,and the
owner
>> hadn't been doing any work on the tractor that I am aware of. Dad
>> reccomended the guy take the engine to the guy that does our machine 
>> work.
>> I'd never use that block until it was checked for alignment thru the
>> mains.
>>
>> Related story--I was working on an F-12 for a guy. I had the pan off
for
>> some reason. I looked up and the block had been welded on the inside
all
>> around the front main. Wonder how long it was ran after that? Can you

>> have
>> the block line bored where the mains go? If so do the bearings then
have
>> to
>> be custom made?
>>
>> John
>>
>>
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>
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