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#47489 07/11/2005 1:02 AM | Joined: Oct 2004 Posts: 19 New Guy | | New Guy Joined: Oct 2004 Posts: 19 | The fly wheel ring gear on my 235 has a couple bad spots in it which are causing the starter to grind when the engine stops on those particular spots. I have a new bendix on the starter. Can the ring gear be replaced on the fly wheel or do I have to find a whole new flywheel?
Rob Mathis
48 Half Ton with 235 & SM420
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#47490 07/11/2005 1:33 AM | Joined: Aug 2001 Posts: 1,300 'Bolter | | 'Bolter Joined: Aug 2001 Posts: 1,300 | Chevs of the 40s has them. I bought one for about 40 bucks I think when someone suggested turning old one around. Talk about a light bulb moment. If you heat ring gear, it expands and can be removed. New one goes on the same way. | | |
#47491 07/11/2005 1:37 AM | Joined: Dec 2002 Posts: 571 Shop Shark | | Shop Shark Joined: Dec 2002 Posts: 571 | I haven't done it but have heard how. Heat the flywheel in a BBQ grille. Then quench the flywheel with water and the ring gear should pop off. Then heat the new gear and put the flywheel in a freezer for a few hours. Then assemble new gear. Don't know if it works but sounds like it would. Hope this helps. | | |
#47492 07/11/2005 2:31 AM | Joined: Mar 2002 Posts: 9,115 'Bolter | | 'Bolter Joined: Mar 2002 Posts: 9,115 | Ther are several threads on this and yes it can be replaced. | | |
#47493 07/11/2005 2:32 AM | Joined: Oct 2004 Posts: 19 New Guy | | New Guy Joined: Oct 2004 Posts: 19 | Thanks! I may try to flip mine around.
Rob Mathis
48 Half Ton with 235 & SM420
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#47494 07/11/2005 3:23 AM | Joined: Apr 2005 Posts: 196 Wrench Fetcher | | Wrench Fetcher Joined: Apr 2005 Posts: 196 | If you're going to all that trouble (AND you can get a new ring gear for $40) why not just replace it? It would be a REAL shame to flip it and find out that your particular situation did not work well.  Just a thought. Rance
66 C10 FS/LB 292/4-spd manual (I also enjoy Hang Gliding)
I'm too sexy for my hair, that's why it isn't there
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#47495 07/11/2005 4:20 AM | Joined: Feb 2004 Posts: 29,841 Kettle Custodian (pot stirrer) | | Kettle Custodian (pot stirrer) Joined: Feb 2004 Posts: 29,841 | The old one will just slide off with a little energetic massage with a hammer & punch. Be sure the new one is heated enough to be a free slip fit as it's installed. If there's a shoulder on the flywheel, the new gear should drop onto it easily, and align with the shoulder. If not, be sure the flywheel is on a flat surface, so the gear will shrink itself into place in proper alignment. A wobbly ring gear due to misalignment during installation is a PITA to straighten out. I use a rosebud tip on an acetyline torch to heat the gear, but it can also be heated on a barbecue grill. Just don't heat enough to turn it red hot, as this can anneal the heat-treat of the metal and make it soft enough to wear quickly.
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
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