[Farmall] Sector Gears

[George Willer]

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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