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John Deere Tractors Discussion Forum

Re: WICO XH1042 magneto

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05-21-2020 06:18:42

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According to information in the Field Service Bulletins, the early "B's" used long-lug impulse drives (S/N 1000 through 89999). The change to short lugs began at S/N 90000. And yes, the original magneto on your "B" would have been a Fairbanks-Morse DRV2B.

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05-21-2020 07:37:16

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 Re: WICO XH1042 magneto in reply to dan_41jdh, 05-21-2020 06:18:42  
Thanks for all the info guys! Well, I just need to pull my mag and measure the lugs I guess. I couldn't remember if they were long or short. The reason I asked, is I was under the impression that the XH1042 was a short lug mag built after 1940. Maybe they made them both ways or the lug piece is interchangeable? Dan, maybe I need to see what years are associated with those serial numbers you mentioned.
Teddy, what long lug mag do you have? Maybe you could tell me your serial number range?
Ron & Bob & amtrac, thanks for those comments and advice! All good info!
Thanks again,


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05-21-2020 09:14:41

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 Re: WICO XH1042 magneto in reply to kb9r, 05-21-2020 07:37:16  
The XH1042 isn't necessarily locked into a short lug impulse drive cup. Drive cups between C and X magnetos are interchangeable. The WICO C was first used on the Model "H" when it was launched in 1939, and was then used on all of the flange-mounted Waterloo tractors until the better-designed WICO X was available sometime around 1947 or 1948. The C and then the X became the appropriate "repair parts" as time went on. Deere told dealers that they didn't have to stock all the various unique assemblies of magnetos but could stock a few magnetos along with the appropriate impulse drive cups to swap as required to suit the application. The picture is from Field Service Bulletin 159-S, January 1948, soon after the X was introduced, and take a look in the table at note #3.

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John T

05-22-2020 04:35:07

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 Re: WICO XH1042 magneto in reply to dan_41jdh, 05-21-2020 09:14:41  
Geeeeeeee Dan you do good work. Somewhere in all the info my late friend Duane Larson left us all I had that information but didn't take the time to dig it up lol

John T

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05-22-2020 07:45:34

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 Re: WICO XH1042 magneto in reply to John T, 05-22-2020 04:35:07  
I felt very privileged to have known Duane through a few face-to-face conversations as well as a number of emails. He was always glad to share the immense amount of information he accumulated, and he was a professional - he didn't make up stuff, he always documented his sources. Unfortunately, he left us far too early. And he was a true gentleman. I never heard him make any derogatory statement about anyone.

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05-21-2020 09:53:42

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 Re: WICO XH1042 magneto in reply to dan_41jdh, 05-21-2020 09:14:41  
Thank you! Now that answers my initial question! I appreciate your efforts along with others to help me!


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