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Starter ring gear on 8N

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behrjack

04-03-2006 09:46:42




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I have a frend who is replaceing his ring gear on his 8 N he got the old one off heated the new one to about 350 degree put it on cooled it with water. Now it just spinns on flywheel anyone got any ideas?




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Steve in PA

04-03-2006 09:55:30




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 Re: Starter ring gear on 8N in reply to behrjack, 04-03-2006 09:46:42  
Not much you can do when I replaced the ring gear on my 440IC. The dealer told me in order for it to hold properly you must let it cool on its own not to use water.



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behrjack

04-03-2006 10:06:04




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 Re: Starter ring gear on 8N in reply to Steve in PA, 04-03-2006 09:55:30  
Thanks Steve I think you may be right on best I can tell him is to get anouther gear and try again without the water.



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souNdguy

04-03-2006 11:36:24




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 Re: Starter ring gear on 8N in reply to behrjack, 04-03-2006 10:06:04  
Yep.. don't quench.. should be naturally cooled to an interference fit..


Soundguy



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Dave in Ms

04-04-2006 08:22:18




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 Re: Starter ring gear on 8N in reply to souNdguy, 04-03-2006 11:36:24  
It may be salvageable. If you're feeling lucky, heat it enough to get it off without doing any damage. Put it in your wife's oven at 550 in the morning, and leave it there all day. Don't open the door again until the process is complete and the oven cools to room temp. Before you go to bed, turn the oven down to 350. Turn it off in the morning and leave it alone until cool. If you are lucky, the ring will be back to size. If not, all you are out is the gas/electric bill and your time. The problem is the cross section of the ring gear is so narrow, there may not be enough material retaining memory to draw it back to size. I have done this a few times with mixed results. With luck it might work for you. If not, you can always tack weld it in a few spots, or buy another ring and try again.

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