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Ford 9N, 2N & 8N Discussion Forum
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NEED TO REPLACE THE RING GEAR

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Jack Treppa

10-05-2004 14:53:22




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Tractor is 49 N.would some one walk me through what i need to do.Im no mechanic but i can follow directions. but not the ones in the manual..i think they have to be simplafied. So far I have gotten much hepl from here. thanks JACK




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Ramrod

10-06-2004 10:39:39




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 Re: NEED TO REPLACE THE RING GEAR in reply to Jack Treppa, 10-05-2004 14:53:22  
I just did this, here's how it worked for me ...

I set my flywheel (engine side up) on my deep fry cooker (metal bucket will do) and used my torch and the rosebud tip, heated the ring gear til it started to change color, then tapped around it lightly, it fell right off. I let the flywheel cool, then took my angle grinder wire wheel and cleaned it up around the edges where the new ring goes, then put it in the freezer for a few hours. When it was nicely chilled, I put the new ring gear in the oven at 500 degrees until the oven cycled off. I got the flywheel outta the freezer and put it back on the cooker/metal bucket (engine side down this time), and got the hot ring from the oven and laid in on the frozen flywheel. It fell right into place, the heat expanded and thawed the flywheel and it firmed right up while I kept an eye on it to make sure it stayed in place. Worked like a charm and easy.

If you don't have a torch, drill and bust off the old ring and take it from there.

Good luck,
Ramrod

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Rob

10-06-2004 14:23:36




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 Where was the little lady while in reply to Ramrod, 10-06-2004 10:39:39  
you were doing all this?



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Ramrod

10-06-2004 14:26:23




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 Re: Where was the little lady while in reply to Rob, 10-06-2004 14:23:36  
My ladyLove was on the little tractor mowing and weed-n-feeding. Ya gotta plan these thanks!



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Rob

10-06-2004 16:58:06




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 I knew she must have been out in reply to Ramrod, 10-06-2004 14:26:23  
of the house. It's got to be genetic the ladies get at least edgy, if not ballistic, when you start stuffing tractor parts into the kitchen appliances.



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clearfield

10-05-2004 19:10:54




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 Re: NEED TO REPLACE THE RING GEAR in reply to Jack Treppa, 10-05-2004 14:53:22  
Take the new ring gear to a auto shop or and tractor dealer after you take it apart and have them take the old one of and install the new one most garages have a special heating plate that they use to heat new ring then it slips right on nothing worse then getting burnt with a hot ring gear then you have to let it cool down while you are tending to your burn cost you a few bucks but it worth it to have the garage heat it up for you.

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Rob

10-06-2004 06:30:22




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 Good advise. in reply to clearfield, 10-05-2004 19:10:54  
You could run it in to the machine shop and have the flywheel surfaced and the ring installed bet it wouldn't cost that much. Putting a torch on a ring gear can make it soft...not good.
I'd cut the ring off myself though. Clean it up, just so I don't have to pay shop rate for the no-brainer stuff.



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Hobo,NC

10-05-2004 17:18:04




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 Re: NEED TO REPLACE THE RING GEAR in reply to Jack Treppa, 10-05-2004 14:53:22  
With the tourch it only takes a min. or two. If not sure carrie it to someone who knows how to replace the ring gear. If not done rite you may get two do it again.



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Rob

10-05-2004 16:55:10




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 Re: NEED TO REPLACE THE RING GEAR in reply to Jack Treppa, 10-05-2004 14:53:22  
You can drill a hole or two between the teeth before you take a chisel to it.
It make take 30-minutes or even more in the oven to get the ring gear 350* through-and-through. Whatever it takes, when it's 350* it will go on. Don't burn the teeth with a torch because they get tore up when they are factory hard.



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JimNC

10-05-2004 16:37:21




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 Re: NEED TO REPLACE THE RING GEAR in reply to Jack Treppa, 10-05-2004 14:53:22  
Jack,
I"ll assume you mean the starter ring gear. Seperate the eng from the trans, remove the flywheel, take a chisel and hammer and whack the ring gear between the teeth until it breaks, pull it off. Heat the new gear with a torch or in an oven to about 350 deg for 15 min. it will fall right on the flywheel.


Jim



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