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Pgriswd 
Bronze Level
Joined: 25 Mar 2025
Location: South Carolina
Points: 25
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 Topic: H3 Starter
Posted: 21 hours 40 minutes ago at 5:59pm |
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I have a 1961 H3 and it has broken the nose off the starter twice. Does any know of a problem with this and what I can do about it?
Thanks
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DrAllis
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Joined: 12 Sep 2009
Points: 22341
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Posted: 21 hours 36 minutes ago at 6:03pm |
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A bad/worn out ring gear on the flywheel, OR ignition timing set too far advanced, OR BOTH.
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Pgriswd
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Joined: 25 Mar 2025
Location: South Carolina
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Posted: 21 hours 9 minutes ago at 6:30pm |
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Thanks dr Allis
Will check out both
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Les Kerf
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Joined: 08 May 2020
Location: Idaho
Points: 1494
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Posted: 6 hours 22 minutes ago at 9:17am |
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The mechanical advance mechanism inside the distributor can cause the ignition to be too far advanced during starting if the advance mechanism is sticky due to corrosion and/or worn parts.
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Coke-in-MN
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Joined: 12 Sep 2009
Location: Afton MN
Points: 42113
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Posted: 6 hours 5 minutes ago at 9:34am |
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My 715-B TLB with Perkins engine has broken the nose cone of 3 starters over last 5 years . Seems starter drive was not moving forward far enough to fully engage ring gear -putting strain on outboard bushing in nosecone of starter .
Worn bushings in starter can also allow movement to misalign armature .
Just bought a import starter (NEW) for less than cost of rebuilding the Delco starter again.
Edited by Coke-in-MN - 6 hours 4 minutes ago at 9:35am
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Life lesson: If you’re being chased by a lion, you’re on a horse, to the left of you is a giraffe and on the right is a unicorn, what do you do? You stop drinking and get off the carousel.
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Pgriswd
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Joined: 25 Mar 2025
Location: South Carolina
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Posted: 5 hours 53 minutes ago at 9:46am |
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Thanks Les and Coke. I checked the ring gear DR Allis recommended and seems fine. I think I have a timing issue and will work on that next
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DrAllis
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Posted: 4 hours 55 minutes ago at 10:44am |
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Things that I take for granted and fail to express. When setting the ignition timing with a timing light, your goal is F-25 or FIRE or 25 degrees BTDC at full throttle. One should always idle down to 400 RPM (after getting timing set) to check the centrifugal advances operation. At very slow idle it should be at or very near TDC. This verifies that the advance is working correctly. Also, the ring gear might look just fine where you looked at it. Every engine stops in one of two places. So, there will be two places of wear, 180 degrees from each other. The rest of the ring gear can and will look very good, but may be very bad in these two suspect places. Don't be deceived until you roll in completely around and look at all of the ring gear.
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