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H John Deere Starter

M

Mo in NE tex

Member
I have a "42 John Deere " H" with electric start etc. Just had starter rebuilt and installed it today. Does great on first try, but, the nut on the end of the Bendix (castle nut with cotter pin) shears the pin and unwinds the nut from the shaft. I replaced it twice now and it's done it both times. Never done it in the past 7 years that I had it. Any ideas? I have double checked that all the springs, washers, and spacers are in right order too.

I posted this on the John Deere Forum and haven't received a reply there, thought on a general forum someone might have a idea of what's going on with this starter.
 
I wonder if the drive is not kicking out as soon as the engine fires. The sudden shock could do as you describe. Take the starter back to the starter shop.
 
I was using it to turn the engine with the spark plugs out as I'm in the process of rebuilding the carb. Even if the engine was running, it should not have any pressure on the nut at the end of the shaft. All it does is hold the springs in place and there's a washer between the spring and the nut and all slide freely.
 
It's been years since I had one of those apart, but is that nut to be tight on the shaft ? maybe yours was not ?
 
Yes, tight and a cotter pin inserted, it's a castle nut. I went ahead today and put a roll pin in it and it is now holding, so far, I'll keep my fingers crossed. According to the starter book, it called for a cotter pin, maybe these Chinese pins aren't as good as was made back in 41.
 
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