Chainsaw Repair
How To Basics - Carb Fixes + Mods - IPL and Service Manuals => How To Basics and Fixes => Topic started by: Cut4fun on May 17, 2015, 10:08:19 am
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Ring pin removal replacement relocating
I think it was Adam @aclarke that had told of doing this on Racesaws back in the day.
I am just wondering on how to remove and replace one or relocate if needed.
Thinking it was said using small drill bits for ring pins in pistons.
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In most model airplane engines the ring pin is vertical down through the piston.
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You can cut the old pin out easily with the proper diameter carbide end mill or possibly a drill press if care is taken. Easier to go through the top of the piston and peen the hole over gently. I've used wire/numbered drill bit shanks as the locator pin.
The pin placement needs to be done carefully and the ring ends will likely need to be re-profiled with a file of diamond burr as the profile of the locating pin is different now. Make sure the ring will completely collapse in the ring land
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Thanks for info you two. :)
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You would place the ring pin in a hole drilled vertically down? Then use a small drill bit into the hole as the pin? Just trying to make sure I have what you mean correct. Probably not going to need it anytime soon but I appreciate the info.