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[GMCnet] Onan Flywheel [message #172610] Fri, 08 June 2012 16:05 Go to previous message
ljdavick is currently offline  ljdavick   United States
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma:
Senior Member
After installing the RAGUSA starter bracket I did not heed the manual and simply reinstalled the flywheel bolt with my electric impact wrench.

This is a mistake.

The shaft is tapered and the impact wrench is strong enough that it cracked the hub of the flywheel. I pulled the flywheel off today - a task I’ve become quite good at - and inspected it. I was hoping it was not damaged (to my eyes) so that I might simply reinstall it at the proper torque. That’s not how my luck runs.

<http://www.gmcmhphotos.com/photos/onan-the-barbarian/p44486-onan-flywheel-crack.html>
<http://www.gmcmhphotos.com/photos/onan-the-barbarian/p44485-onan-flywheel-crack.html>

These are sorrowful pictures of my cracked flywheel hub. Fortunately a call to Nick at Applied GMC and a replacement flywheel was had, reinstalled at the proper torque and the Onan runs again. I don’t think it runs as smoothly as it did before, but with all the fiddling I’ve been doing it’s a wonder it runs at all.

I’ve got to install the Pertronix ignition upgrade...

Larry Davick
The Mystery Machine
1976(ish) Palm Beach
Fremont, CA

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Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
 
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