Starter Switch

Farmall Super A, AV, 100, 130, & 140 1939 - 1973

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superman
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Zip Code: 70343
Tractors Owned: 1952 F-CUB
1953 Super AV

Starter Switch

Postby superman » Mon Jun 19, 2017 1:10 pm

I hooked up a good battery and new cables on my Super AV and the starter works... but there is visible arcing between the starter switch housing and starter body. Is there suppose to be a gasket or insulator between the two? Or could there be another issue I need to look at?
FYI, I have converted it to 12 volt system using original 6 volt starter.

Jim Becker
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Re: Starter Switch

Postby Jim Becker » Mon Jun 19, 2017 1:41 pm

There shouldn't be any voltage at the switch housing. If you remove the switch and turn it bottom up, you should be able to see a flat insulator sheet on each side. This keeps the moving contact plate from hitting the housing. One of your insulators may be missing.

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superman
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Joined: Tue Jan 15, 2013 10:41 am
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Tractors Owned: 1952 F-CUB
1953 Super AV

Re: Starter Switch

Postby superman » Mon Jun 19, 2017 1:48 pm

Thanks... I will check for that. In the manual they show a "gasket" between switch housing and starter body. Is it just for keeping dust out or is it an insulator too? I don't think my switch has this gasket.

Jim Becker
Team Cub
Team Cub
Posts: 12905
Joined: Sun Feb 02, 2003 2:59 pm
Zip Code: 55319
Circle of Safety: Y
Location: MN

Re: Starter Switch

Postby Jim Becker » Mon Jun 19, 2017 1:53 pm

Dust. Even with the gasket, the switch housing will ground to the starter through the mounting screws.

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superman
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Joined: Tue Jan 15, 2013 10:41 am
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Tractors Owned: 1952 F-CUB
1953 Super AV

Re: Starter Switch

Postby superman » Mon Jun 19, 2017 2:30 pm

Okay, makes sense. Thanks


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