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John Deere Tractors Discussion Forum
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1939 Deere H help ( mag drive)

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Farm w/Junk

08-26-2004 12:49:49




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Hi well Im trying to get my H running and its not going well. Had the mag rebuilt and put it on yesterday. Turned it over and got it timed pretty close, and it popped twice. Then we had to move timing and put the mag back on and it wouldnt impulse. Took it off and put it back on and it impulsed for a little, but then would skip and sometimes snap. Well had to quit last night so went out today after school and spun it over and no snap. Thought it might be that the mag was worn where the impulse catches so took it to the mag shop, they put it on the bench and it snaped and sparked beautifully. So came home and looked at tractor spun flywheel and the mag drive didnt turn, either did the fan. So I spun those by hand half a turn till it stopped then spun flywheel and the turned till I threw it over and the flywheel hit the compression stroke again and rocked back a little. then they wouldnt turn for about 1-1/2 turns of the flywheel it caught again. What is broke busted or misaligned? Fan and mag drive are still tight with each other. thanks and sorry its long but wanted to be detailed, i really want to get this tractor running!! Thanks
Matt

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F-I-T

08-26-2004 17:22:03




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 Re: 1939 Deere H help ( mag drive) in reply to Farm w/Junk, 08-26-2004 12:49:49  
Matt:

Gosh, I wanted to be sure an try to help as old Fritz there seems pretty steamed that he had to drop in and save you. I did a quick search and it's his first post (hunting down ip's is now a hobby of mine), so he must think you're pretty special. Fritz, folks are generally pretty helpful here. After a few hundred posts of trying to help folks, I think you'll find you can't always find the time to be first.

Anyway, Matt, first, the crank drives the cam, and the cam drives the governor shaft, which drives the mag.

So, find out first what's not turning. If the valves are working, then the camshaft to crank link is still intact. Next, is the governor shaft turning? Apparently not, so you have lost the gear to gear with the cam like Fritz says, and if the bearing on the left side of the governor case fails/falls out, what have you, the governor shaft can lift up and skip a tooth, or many teeth. When you rocked it backward, it probably settled back down into the gear, and gave you some indexes.

Sounds like the drivers side governor case bearing, or the gear somehow fell off the shaft!

Frank-in-Tallahassee
70D // 855 // VAC // IHC �Cub�
[email protected]

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Farm w/Junk

08-27-2004 07:16:52




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 Re: 1939 Deere H help ( mag drive) in reply to F-I-T, 08-26-2004 17:22:03  
F-I-T Hey thanks for replying but unfortunately its not as simple as that bearing being bad. The drive gear that runs the gov. shft is about 1/3 to1/2 stripped. So thats why it wouldnt fire evenly. So my question is how do I remove to replace that gear? Take that whole box off? and flip it over? Thanks for your help. Have a good day.
Matt



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F-I-T

08-27-2004 10:07:30




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 Re: 1939 Deere H help ( mag drive) in reply to Farm w/Junk, 08-27-2004 07:16:52  
third party image

Matt:

Wow. Now the simplest way is to take the whole unit off, and it's been years since I had an "H" apart, but...

I'm wondering if the governor shaft would slide out from the left (flywheel) side of the case. I could be very, very wrong here, but it might be worth some investigation. It probably won't work that way as the fork might get in the way. It does warrant a good hard look, though.

Frank

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Fritz

08-26-2004 16:58:00




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 Re: 1939 Deere H help ( mag drive) in reply to Farm w/Junk, 08-26-2004 12:49:49  
Sounds like your governor bearing on the left side is bad allowing the governor assembly to slide out of mesh with the cam. Had this problem on an A JD once. Hope this helps out since no one else would. Fritz



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F-1-T

08-26-2004 13:59:33




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 Re: 1939 Deere H help ( mag drive) in reply to Farm w/Junk, 08-26-2004 12:49:49  
take it to the junk yard.



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proxy

08-26-2004 15:14:09




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 Re: 1939 Deere H help ( mag drive) in reply to F-1-T, 08-26-2004 13:59:33  
Now you are using F-I-T name, buy changing the I to a 1. Smart. Here is one for you to change.

A$$HOLE

How about that one???



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F-I-T

08-26-2004 14:04:00




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 Re: 1939 Deere H help ( mag drive) in reply to F-1-T, 08-26-2004 13:59:33  
Look bud. You can hide for the moment behind that IP of 198.81.26.73, but I find ya, and when I do, I'll stuff your little corn hole with your pea brain..

Got that? I can find you, and your dad better have deep pockets.

Did you watch the news today? Ashcroft says there is federal legislation on the way to deal with spammers and jokers like you. I can't wait to tell the FBI.

Enjoy your summer.

Go back and watch MTV.

Frank

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buickandqueere

08-26-2004 13:54:46




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 Re: 1939 Deere H help ( mag drive) in reply to Farm w/Junk, 08-26-2004 12:49:49  
your screwed! buy an international



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proxy

08-26-2004 15:07:25




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 Re: 1939 Deere H help ( mag drive) in reply to buickandqueere, 08-26-2004 13:54:46  
hey there buickandqueere or Blksmok or what ever your proxy name is. I will be tracking you down and I will find out who you are.



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Farm w/Junk

08-26-2004 14:23:28




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 Re: 1939 Deere H help ( mag drive) in reply to buickandqueere, 08-26-2004 13:54:46  
Hey thanks for the advice but I have 4 of them already, barn is full. I dont get why you getoff by stealing peoples names who are trying to help others and leave stupid comments. If you think Im screwed, why dont ya get all the people you stole names from and said stupid stuff to together and tell them to their face and not hide behind the moniter, then you will know the true definition of being SCREWED!!!!

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