Steves46m Posted January 15, 2019 Share Posted January 15, 2019 Hello all I just wanted to upload some pictures of the rebuild I did on the Magneto for my M. I don't know how old the coil is and any input to that would be a big help but looking at the cracks on the insulation I think it must have gotten a little warm at one time and seeing that that wire wore through the insulation that was surprising. otherwise it was a pretty simple rebuild the metal bar inside the coil came out easily I cleaned the bar up it slipped into my new coil right on. I got my supplies from brillman in Virginia I've dealt with them before, and they as well as their parts are first class I reinstalled the Magneto back on the tractor and have an excellent Spark! Just curious as to how old you guys think that original coil might be? the insulation on this new coil is much more like plastic and that old insulation is nothing like the new one. The only thing I didn't reinstall was that thick paper-like material between the coil and the magnets because the wire coming out of the coil on my new coil is in a different place than the original coil the paper didn't line up and because of the snug fit it was hard getting everything to line up and the paper always moved out of the way so I left them out I'm not sure what they are supposed to do. 2 Quote Link to comment Share on other sites More sharing options...
560Dennis Posted January 15, 2019 Share Posted January 15, 2019 This old guy thinks its old . ????pre MCMXLIX ⚡️? Quote Link to comment Share on other sites More sharing options...
Steves46m Posted January 15, 2019 Author Share Posted January 15, 2019 The gentleman I bought the tractor from two years ago said the Magneto was rebuilt. The tractor ran great before this rebuild but seeing that coil I figured it was time. It ran really well once I installed it on the tractor and tested it out I thought I was going to blow the little light bulb in my spark plug tester! LoL Any input on whether I should have installed those thick paper like washers shown in picture 1? Quote Link to comment Share on other sites More sharing options...
Lt.513-2 Posted January 16, 2019 Share Posted January 16, 2019 IMO you shouldn't need them. The F4 mag for my F20 had a coil looking like that, the coating had melted and ran down into the rotor. That meant a total disassemble of the mag. I have a 47 M that has a 90 degree distributor. I was told it was converted from a mag to a distributor ? The coil is red under the band so.....it might be original ? Thanks Jason Quote Link to comment Share on other sites More sharing options...
560Dennis Posted January 16, 2019 Share Posted January 16, 2019 In the messick illustration , item 31 part number 49493D , quantity of 2 , call for price. Insulator coil end Quote Link to comment Share on other sites More sharing options...
Steves46m Posted January 18, 2019 Author Share Posted January 18, 2019 So what do they insulate against? Are they like a vibration isolator? They don't reduce magnetism I've played around with that when I was debating whether or not I had to reinstall. Quote Link to comment Share on other sites More sharing options...
560Dennis Posted January 18, 2019 Share Posted January 18, 2019 High potential voltage to ground , sorry I can’t find my blue ribbon service manual Quote Link to comment Share on other sites More sharing options...
560Dennis Posted January 18, 2019 Share Posted January 18, 2019 On 1/15/2019 at 12:15 PM, Steves46m said: Hello all I just wanted to upload some pictures of the rebuild I did on the Magneto for my M. I don't know how old the coil is and any input to that would be a big help but looking at the cracks on the insulation I think it must have gotten a little warm at one time and seeing that that wire wore through the insulation that was surprising. otherwise it was a pretty simple rebuild the metal bar inside the coil came out easily I cleaned the bar up it slipped into my new coil right on. I got my supplies from brillman in Virginia I've dealt with them before, and they as well as their parts are first class I reinstalled the Magneto back on the tractor and have an excellent Spark! Just curious as to how old you guys think that original coil might be? the insulation on this new coil is much more like plastic and that old insulation is nothing like the new one. The only thing I didn't reinstall was that thick paper-like material between the coil and the magnets because the wire coming out of the coil on my new coil is in a different place than the original coil the paper didn't line up and because of the snug fit it was hard getting everything to line up and the paper always moved out of the way so I left them out I'm not sure what they are supposed to do. My coil is rotated to 1 or 2 o’clock for contact to cap ? Quote Link to comment Share on other sites More sharing options...
fbh31118 Posted January 18, 2019 Share Posted January 18, 2019 Great pictures! I have a few extra mags laying around and this makes me want to tear them apart and see how they work. Thanks for sharing. Quote Link to comment Share on other sites More sharing options...
Steves46m Posted January 18, 2019 Author Share Posted January 18, 2019 Dennis, I took your advice from above and installed the insulators. Mine were in great shape. Also checked coil orientation to make sure of good contact with cap. Thanks again! Quote Link to comment Share on other sites More sharing options...
KWRB Posted January 20, 2019 Share Posted January 20, 2019 On 1/18/2019 at 9:02 AM, 560Dennis said: My coil is rotated to 1 or 2 o’clock for contact to cap ? I just did the same mag, and so is mine. Just double check that the contact is touching with that 12 o'clock orientation Quote Link to comment Share on other sites More sharing options...
KWRB Posted January 20, 2019 Share Posted January 20, 2019 On 1/18/2019 at 10:05 AM, fbh31118 said: Great pictures! I have a few extra mags laying around and this makes me want to tear them apart and see how they work. Thanks for sharing. They're fascinating. I bought the IH service manual for them. Has a decent explanation on how they work. 1 Quote Link to comment Share on other sites More sharing options...
560Dennis Posted January 20, 2019 Share Posted January 20, 2019 ⚡️⚡️⚡️⚡️Celebrating with coffee and banana bread ? Quote Link to comment Share on other sites More sharing options...
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