[Farmall] gasket question

[John Gustafson]

Todd;
36" wide ought to be enough if it's in a roll, at least that long. In my 
initial searching I had found only cut sheets on the reatail market. I kew 
roll stock had to be available but hadn't considered NAPA.  I'll have to 
check on that down here. I did find fiber gasket maetial finally at Mc 
Master Carr in 36" width and 10 foot rolls which should be enough to allow 
for a couple of mistakes.

One thing I did find plowing through this transmission is that the cases are 
different between the Regular and F-20 in the area of the pto shifter shaft. 
I knew the ratios were a bit different but both teardown manuals I had said 
"drive the shifter shaft out to the rear from the front". Not on the three 
regulars we have.  One of them a .late 31. The F-20  (38) on the other hand 
has the welch plug in the front to allow you to drive the shaft through. 
About a half hour or so of headscratching to figure it out.

John Gustafson
Gloucester, VA


From: <farmallgray at aol.com>
To: <farmall at lists.antique-tractor.com>
Sent: Saturday, July 31, 2010 9:37 AM
Subject: Re: [Farmall] gasket question


> John,
> I don't know the exact size of the final drives offhand and I'm not near 
> any of my tractors to measure.
> Fel-Pro (available from NAPA and other stores) makes 18"X36" sheets and 
> also 36" wide rolls that are 15-50 yards long.
> I would think that should be big enough.
>
>
> On the gasket where the trans bolts to the diff housing RTV should work 
> fine since it is cast iron to cast iron. Where I have had trouble
> is where a tin cover mates to a casting (like the diff cover). In these 
> cases I usually use a gasket AND RTV.
>
>
> Permatex makes a product called "the right stuff"
>
>
> http://www.permatex.com/products/Automotive/automotive_gasketing/gasket_makers/auto_Permatex_the_Right_Stuff_Gasket_Maker.htm
>
>
> It is made to work in place of cut gaskets. I have not tried it yet 
> myself, but I have seen some demonstrations of it, and from them I think 
> it
> should work good for what you are doing. It isn't cheap though.
>
>
> Todd Markle
>
> Spring Mills, Pa.
>
>
>
> -----Original Message-----
> From: John G <gustafsonjohnc at wildblue.net>
> To: Farmall/IHC mailing list <farmall at lists.antique-tractor.com>
> Sent: Fri, Jul 30, 2010 2:21 pm
> Subject: [Farmall] gasket question
>
>
> Son and I finally got back on the Regular after a 4 or 5 month hiatus. We
> had decided to tear down the transmission and get it tanked, along with 
> the
> differential housing and the bull gear housings. That 80 year old tar was
> just too much. Then the castings to the blast yard and a coat of primer.
>
> I had pretty much decided a while back that I was going to have to make a
> new set of gaskets for everything. The bull gear and differential cover 
> have
> me a bit concerned because of the size. Have not found sheets of vellumoid
> that large yet. Son and I got into a discussion about using Blue RTV. My
> personal experience has been mixed with it but there are those who swear 
> its
> the best thing since sliced bread. By the same token there were very few
> leaks on the fittings as we took them apart and the case was pretty full
> initially. Worst leak was the front of the pto shaft cover.
>
> I've measured the thickness  of the old gaskets and I get about 1/32 for
> almost everything and the old vegetable based material is readily 
> available
> for the smaller gaskets in that thickness. I'm actually thinking of using
> 3/64 to allow for long term set on the original gaskets.
>
> Anyone out there have any guidance on sources or how to proceed with this?
>
> John Gustafson
>
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