OVERDRIVE

1941 - 1945, MB, GPW modifications, sugestions, and ideas, official MWO's and unofficial WWII field mods NO EBAY or COMMERCIAL SALES.
Marty, SoCal
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Re: OVERDRIVE

Post by Marty, SoCal » Tue Aug 21, 2018 12:58 pm

As far as I know, there is only one 27 tooth bowl gear, I see it listed here:
http://www.advanceadapters.com/products ... bowl-gear/

The whole unit, 27 tooth, six spline, without shifter shows for $801.51 on AA's site:
http://www.advanceadapters.com/products ... fer-cases/

Here's the retaining ring:
http://www.advanceadapters.com/products ... -retainer/
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43 Ford GPW 92098
53 Dunbar Kapple M100
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TROYWILCOXSON
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Re: OVERDRIVE

Post by TROYWILCOXSON » Fri May 17, 2019 3:00 pm

Thank for a good how to thread.

regards
Regards

Troy Wilcoxson
USN LT retired

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tamnalan
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Re: OVERDRIVE

Post by tamnalan » Fri May 17, 2019 8:26 pm

I just love having an overdrive. The extra gear choices are really useful!

I have the good luck to be able to take my MB on some Moab trails next week (Hell's Revenge!). I have an ATV unit from Herm and will use it a lot in low range, low to moderate power situations. I had some initial trouble with it and faced the "Herm" gauntlet but he came through and it's worked fine for years now. It's a wonderful mod - literally every gear can be "split" with it.

My only caution: be sure to torque the bowl gear nut to spec (about 120 ft-lb I think) and be sure the funny square locking clip fits snugly and won't pop out easily. A batch of undersize clips is floating around... for those of us who are piecing used overdrive parts together and buy replacement clips -- beware! Unhappy will find you if that bowl gear comes loose and wreaks transfer case havoc.
Alan W. Johnson
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MB, 201453, "Lt Bob"
M-100, Sep 1951
MB-TD, Mar 2012
Ford 91C, 1939

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