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Onan flipping the ring gear success [message #367723] Sun, 28 November 2021 07:12 Go to next message
wally is currently offline  wally   United States
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Registered: August 2004
Location: Omaha Nebraska
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Recently I got most of a 6KW power drawer generator as a basket case. The ring gear was munched which was probably why it was removed. Anyway we tapped the ring gear off the flywheel and reinstalled it flipped over to get better teeth on the starter pinion side. Left the flywheel outside where it was 40 degrees and heated the ring gear in the oven at 400F. It then just dropped on and stuck when it cooled (15 seconds or so). With a 4 inch angle grinder we ground tooth bevels like was on the munched side for starter pinion entry. It seems to work with the starter OK now.

Wally Anderson
Omaha NE
75 Glenbrook

[Updated on: Sun, 28 November 2021 07:14]

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Re: Onan flipping the ring gear success [message #367766 is a reply to message #367723] Wed, 01 December 2021 18:24 Go to previous messageGo to next message
Greg C. is currently offline  Greg C.   United States
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Location: Knoxville, TN
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That's good information. Did you have to heat the ring gear a little while tapping it off the flywheel?

I haven't seen my flywheel yet but new rubber mounts are in hand and that is on the list. My starter sounds absolutely horrible while cranking, although it seems tight with no wobble. I'm thinking my ring gear may be chewed up as well.


Greg Crawford KM4ZCR Knoxville, TN "Ruby Sue" 1977 Royale Rear Bath 403 Engine American Eagle Wheels Early Version Alex Sirum Quad bags
Re: Onan flipping the ring gear success [message #367767 is a reply to message #367766] Wed, 01 December 2021 19:00 Go to previous message
wally is currently offline  wally   United States
Messages: 643
Registered: August 2004
Location: Omaha Nebraska
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Greg C. wrote on Wed, 01 December 2021 18:24
That's good information. Did you have to heat the ring gear a little while tapping it off the flywheel?

I haven't seen my flywheel yet but new rubber mounts are in hand and that is on the list. My starter sounds absolutely horrible while cranking, although it seems tight with no wobble. I'm thinking my ring gear may be chewed up as well.
No heat on removing. Actually it came off pretty easy working a blunt punch around it a few times.


Wally Anderson
Omaha NE
75 Glenbrook
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