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Need advice on ring gear install

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ol_timer

04-21-2005 09:07:03

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NEED TO PUT NEW RING ON FLYWHEEL.What is the proper way to remove old one and get new one back on?? THANKS

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Bob M

04-21-2005 09:27:39

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Re: Need advice on ring gear install in reply to ol_timer, 04-21-2005 09:07:03

Use a torch with a lazy flame (even a propane torch will do...). Lay the flywheel face down on a fireproof surface (NOT concrete!) and play the torch around the gear teeth for a minute or two. Then quickly give the gear a few licks with a hammer in several spots evenly around the perimeter (so as not get it cocked - and the gear should come off easily.

Don't have a torch? The gear can also be beat off the flywheel using brute force. But heating it is a LOT easier.

To install the new ring gear, stick it in a hot oven 400 deg + for 15 minutes or so. While the gear is warming up, flip the flywheel over and wipe off the machined surface where the ring gear fits. Then simply set the hot ring gear on the flywheel. It will drop right into place without any persuasion, then will quickly clamp itself to the flywheel as it cools down.

You can also heat the ring gear with a torch but be careful not to get it too hot and softening it! 400 - 450 deg is all that's required.

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ol_timer

04-21-2005 12:37:45

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Re: Need advice on ring gear install in reply to Bob M, 04-21-2005 09:27:39

Thanks guys for the quick response worked slick as a whisle.You fellers are like haveing a bunch of GOOD neighbors.

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Josh H

04-21-2005 09:51:17

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Re: Need advice on ring gear install in reply to Bob M, 04-21-2005 09:27:39

I think using the oven is a lot better than a torch. Nice even heat, and you will be amazed how well it works. The first time I did it I thought my ring gear was too big, it just dropped right on. Sure enough it tightened up though. To get the old one off, you can either pound it off with a punch and hammer, or heat it a bit first with a torch.

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Bob M

04-21-2005 10:20:52

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Re: Need advice on ring gear install in reply to Josh H, 04-21-2005 09:51:17

Right on! I done it both ways (torch and oven) - the oven is definitely the way to go.

Incidentally the oven method works best on "girls night out" if you are married...

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MagMan

04-21-2005 09:22:47

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Re: Need advice on ring gear install in reply to ol_timer, 04-21-2005 09:07:03

With a Torch you heat them up cherry and pull it off heat the new one up and put her on and let it cool.

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Wayne Swenson

04-21-2005 09:22:26

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Re: Need advice on ring gear install in reply to ol_timer, 04-21-2005 09:07:03

Turn flywheel so gear is facing down.
Gently heat the old gear with a torch & it will fall off.
Turn flywheel over & lay new ring gear in place and carefully heat. Do not overheat any one area so the tempering will be lost.
Have a punch & hammer handy to "help" put the gear in place.
Good luck.

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Bob

04-21-2005 10:20:20

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Re: Need advice on ring gear install in reply to Wayne Swenson, 04-21-2005 09:22:26

Why waste $$$ welding gas heating the old ring gear?

Take a cold chisel and a hammer and gash it a couple of times between the teeth (being reasonable, so as not to cut all the way through and nick the flywheel).

Takes about 2 minutes, and that expands it enough so it'll fall right off.

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