[Farmall] 100 breaking crankshafts

[Skip Cleveland]

If the center main bearing is loose, the crankshaft can break like that. I 
had that happen on a little Fiat.

Skip
----- Original Message ----- 
From: "John Hall" <jthall at worldnet.att.net>
To: "Farmall/IHC mailing list" <farmall at lists.antique-tractor.com>
Sent: Monday, May 01, 2006 8:48 PM
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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