[Farmall] Sector Gears

[Jim Thomson]

Steve;

  That will soften the gear even more. I think your vendor is giving you 
the run around (-:

-- 
Jim Thomson
Naples, FL
L50bmg at earthlink.net





soffiler at myeastern.com wrote:

>Hey George (& Mark):
>
>How about heating it up, then packing it in charcoal while
>still very hot and letting it cool very slowly?  That's my
>understanding of how our vendor case-hardens production
>parts here at work.  We routinely case-harden 12L14 although
>it's not terribly well controlled it seems to work
>reasonably well.
>
>Best regards,
>Steve O.
>
>From: "George Willer" <gwill at toast.net>
>
>----- Original Message Follows -----
>  
>
>>Mark,
>>
>>Unless you used some kind of special welding rod, the
>>welds won't contain enough carbon to respond to heat
>>treatment.  One thing you could maybe do... heat the
>>sector gear with a torch to a bright red and hold it there
>>for a while with a smoky flame.  The hot steel will absorb
>>some carbon.  That will add enough carbon to the surface
>>to harden when quenched for a crude form of case
>>hardening.  Do it after all your shaping is done, since
>>the hardening will be very shallow... depending on time. 
>>Drawing the temper should not be necessary, since the core
>>will remain soft.
>>
>>George Willer
>>
>>----- Original Message ----- 
>>From: "Mark Sargent" <bucksargent1 at yahoo.com>
>>To: <farmall at lists.antique-tractor.com>
>>Sent: Tuesday, July 20, 2004 4:09 PM
>>Subject: [Farmall] Sector Gears
>>
>>
>>    
>>
>>>Farmall guys-
>>>
>>>Does anyone know of a source for M Farmall Sector
>>>gears?
>>>I suspect if there are - I can't afford them-- but let
>>>me know- I'd appreciate it.  I bought the Upper
>>>bolster OH kit from C & G - but I don't want to put it
>>>back together - and still have the 'speed wobble' on
>>>the fastest M in western Ohio- due to the sector gear
>>>being worn.
>>>
>>>In the meantime I'll  continue to file the 'welds' - I
>>>used to fill the 'clatter' indentations-- on the one I
>>>took off.   The welds are softer than the gear- so I
>>>suspect I better do a home imitation of heat treat on
>>>the teeth when I'm done-   Has anyone done this?-- any
>>>words of wisdom are appreciated!
>>>Thanks
>>>Mark Sargent
>>>
>>>
>>>
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>>>      
>>>
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"