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Why is there a gasket on my starter? (AC WD)

W

Will Herring

Well-known Member
Just curious about this. There is a gasket that sits between the manual pull starter button thingy and the starter housing. Except it isn't really isolating much as the screws go through the body and would connect the two halves. The only thing I can figure is that it is around the copper post to try and keep arcing to a minimum or something?

Debating on whether to cut a new gasket by hand or reinstall this old one that is in rough shape. Anybody know if there's anything special about this gasket material?

sDu9oCd.jpg
 
As 60 acre says, it's there to keep water out. It's a nice theory, but as you have discovered, it doesn't always work. I have found it frequently on other applications as well, like implement lamps- where water got in, but couldn't get out! So what I do is try to make sure something like that is secure on the top, and not so much on the bottom. Even leaving a little gap on the bottom for a drain.
 
Like 60 acre suggests it's to keep out rain, etc. Nothing special about the material - I've found both impregnated paper and rubber under these switches.

Suggestion: Rather than cut a new gasket, simply clean the old gasket from the mating surfaces then apply a light coat of RTV gasket maker before mounting the switch. Any type (color) RTV works - I've used red, black, blue and clear all with success.
 
Thats an insulator.Make sure you have new locks for the spring bolts.New mechanics dont know nuthin, they dont even suspect nuthin about old tractors.
 
@ The Bobs: I like your ideas better; will try and do something more like that then. Fortunately this tractor is at least shedded.

(quoted from post at 18:04:00 12/04/13) Thats an insulator.Make sure you have new locks for the spring bolts.New mechanics dont know nuthin, they dont even suspect nuthin about old tractors.
Click to expand...

Thanks for the heads up.
 
Sposed to keep water from rain, washing, etc, out. Design fails,
cause on the right day, it gets wet from sweating, condensation,
etc.
 
Farmall and JD used the same type of switch.Model A Ford started using a switch like that in 1928.If you could look at the whole switch you would see how close the hot bolt is to the starter body.Some of these switches have slits in the sheet metal housings so they are not water proof.As usual those who never saw one know more than the fellows who worked with these switches.
 
36,
I don"t think you are looking at what he"s talking about!
He"s talking about the gasket between the cover and the starter housing. It"s certainly not waterproof but it could keep out some dust.
Personally, I think the cover helps contain the sparks created by the arc when the two copper "points" come together.
The insulators around the copper lugs would probably not be called gaskets.
 
(quoted from post at 05:15:42 12/06/13) Again we are not talking about the insulators on the hot bolt.
Click to expand...
understand that 36c, but I think we may be alone.
 
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