Tecumseh 611113 Alternator Stator - Bad diode - Snowblower Forum : Snow Blower Forums
 
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post #1 of 9 Old 03-23-2018, 03:16 PM Thread Starter
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Tecumseh 611113 Alternator Stator - Bad diode

Hi -

I've determined that my stator diode has died on my Tecumseh 611113 alternator stator. Does anyone know what size diode I should replace this with?

The original diode looks like it exploded or swelled so I can't read any numbers off it.

Thanks in advance for your help!

Kevin
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post #2 of 9 Old 03-23-2018, 07:19 PM
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How often do you NEED the headlight?
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post #3 of 9 Old 03-23-2018, 08:30 PM
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I have a thousand diodes if you find the specs, I'll send you one or two.

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post #4 of 9 Old 03-23-2018, 10:04 PM
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Something like this would be a good choice and cheap: https://www.digikey.com/product-deta...GOS-ND/1482825

Of course you'll pay about 10x as much for shipping as for the diode itself!

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post #5 of 9 Old 03-23-2018, 10:55 PM Thread Starter
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Quote:
Originally Posted by CO Snow View Post
How often do you NEED the headlight?
Well, I was actually looking into putting two 18W LEDs on the snowblower. I think if I just need the light even once a year, I would like to have it working. I work late hours sometimes and might not make it out until dusk to start to snow blow sometimes.

Another question I have pondered is putting a bridge rectifier and capacitor(s) to smooth out the voltage for new LEDs?

Should I pursue that instead of just replacing the diode? I have seen and read all these vids and posts about how the diode DC is "crappy" DC.
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post #6 of 9 Old 03-23-2018, 11:08 PM Thread Starter
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Quote:
Originally Posted by JLawrence08648 View Post
I have a thousand diodes if you find the specs, I'll send you one or two.

That would be awesome! Do you think you have a 4a 100v diode as ELaw has suggested? I was looking for a shottkey diode because I heard they are more efficient. I would think 4A or higher and anything over 50V would be good, right? But I wanted to double check. I wanted to measure the voltage off the stator before the diode but I could not get to the wire while it was mounted. So I pulled the flywheel and stator off to Ohm it out. That's when I found I had good Ohm readings before the diode but nothing after it.

I found this schottkey diode on AliExpress for (20pcs for $1.15) and I would think it would work, too. https://www.aliexpress.com/item/20PC...ceBeautifyAB=0
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post #7 of 9 Old 03-24-2018, 12:36 AM
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Looking for little stuff like this is what makes me miss Radio Shack

From that 611113 you should have 3amps, or 36 watts @ 12V. You can find LED lights on ebay or amazon that will run on AC. That way you don't need to do anything but run wire. They must have a converter internally.

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post #8 of 9 Old 03-24-2018, 10:50 AM
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I hit the link below, 20 pieces for $1.40 including shipping, go with that, it will save me time looking and it's exactly what you want.

Quote:
Originally Posted by kwaropay View Post
That would be awesome! Do you think you have a 4a 100v diode as ELaw has suggested? I was looking for a shottkey diode because I heard they are more efficient. I would think 4A or higher and anything over 50V would be good, right? But I wanted to double check. I wanted to measure the voltage off the stator before the diode but I could not get to the wire while it was mounted. So I pulled the flywheel and stator off to Ohm it out. That's when I found I had good Ohm readings before the diode but nothing after it.

I found this schottkey diode on AliExpress for (20pcs for $1.15) and I would think it would work, too. https://www.aliexpress.com/item/20PC...ceBeautifyAB=0

1986 Ariens ST522, 5hp, 22"
1995 Murray Craftsman 10hp, 29" w. 12" impeller
A 1983 Real John Deere 10hp, 32" w. 12" impeller, 16" auger, 20" high front, cast iron gear box, chains
Noma 9hp, 27" w. 12" impeller
Noma 5hp, 24" w. 12" impeller, 20" high front
Gravely Convertible, 12hp Kohler cast iron, 26" width, 600 lbs of cast iron & steel, 2 speed impeller, 4 ground speeds
Dynamark 8hp, 26", 12" impeller, for sale
Several other 5hp, 8hp, several 2 cycle, all for sale
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post #9 of 9 Old 03-24-2018, 01:16 PM Thread Starter
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Hi - I decided I'm just going to replace the diode with the schottky diode I found on Aliexpress and stick with the light I have. Thanks all.
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