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Labor Day Putting down your wrenches or time for MORE wrenching? 
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| | | Forums66 Topics128,006 Posts1,055,267 Members48,418 | | Most Online14,466 Apr 26th, 2026 | | AD Chevy Trucks Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
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on the Internet for over 30 years! and not clogged down with Ads! Again, thanks! | | | | Joined: Aug 2006 Posts: 28 'Bolter | | 'Bolter Joined: Aug 2006 Posts: 28 | Generator on my 216 almost rattled off the other day. Turns out the 2 bolts that hold it on underneath worked their way out. Any idea what the size and thread of the bolts? It is not 5/16 and seems to be too small for 3/8. Please help! I can't drive it until I have the proper bolts to re-attach properly!
Thanks, Pieman | | | | | Joined: Apr 2008 Posts: 899 'Bolter | | 'Bolter Joined: Apr 2008 Posts: 899 | Which bolts are we talking? The ones that hold the bracket to the block or the ones that hold the generator to the bracket?
Ed
| | | | | Joined: May 2005 Posts: 8,878 . | | . Joined: May 2005 Posts: 8,878 | I'm going to make a reasonably educated guess that in either case they're 3/8-16 bolts. | | | | | Joined: Feb 2004 Posts: 29,742 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,742 | The bolts that hold the generator to the bracket are 5/16". If a 5/16" bolt is sloppy, then the holes in the generator end frames are worn. In In that case, drill the bracket and the end frame out to 3/8" and don't let the generator get loose again. I like to use Nylock nuts or jam nuts in places like that. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
| | | | | Joined: Dec 2000 Posts: 3,399 Gas Pumper | | Gas Pumper Joined: Dec 2000 Posts: 3,399 | The generator bracket to engine block is 3/8-16. When the other ones warble out, you can put a nut on the back of them rather than rely on the threaded holes. | | | | | Joined: Feb 2004 Posts: 29,742 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,742 | There are no threaded holes except for the belt adjuster bolt hole in the front bracket. The pivot holes in the generator end frames are not threaded, and never were. That should be common knowledge for anyone who has worked with these engines on a regular basis. The original-equipment pivot bolts had close-fitting unthreaded shanks through both items, and squashed-thread self locking nuts. Chances are those items have been lost many years ago. A good substitute might be 5/16" Allen head shoulder bolts, or 3/8" shoulder bolts if it's necessary to drill the generator end frame and bracket. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
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