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JD carb fix. - Printable Version

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JD carb fix. - aametalmaster - 02-11-2013

I got this 1938 JD carb from a customer and the threads were shot where the float bowl nut screws on. The bottom 3 threads were stripped off. So after pondering how to fix without welding i can up with this. I bored a stub of metal for a 7/8-18 thread to match the existing threads and made sure it screws on tight since there were good threads on the upper part. I threaded it with this custom ground HSS threading tool since it was against a sholder on the inside. Took 4 or 5 passes and it fit great. The black line on my tool bit is my depth stop. Then i threaded another stub 7/8-18 OD for this adaptor to screw onto to thread the OD and trim to length. Then i will make a custom 1-18 acorn nut to replace the old 7/8-18 and it should be fixed. To be continued and more pics to come...Bob


RE: JD carb fix. - aametalmaster - 02-12-2013

Ok here is the threaded part on my stub manderal. And then screwed onto the carb body. Now to make a new nut from hex stock...Bob


RE: JD carb fix. - sasquatch - 02-12-2013

Nice re-do Bob, customer should be happy with that.


RE: JD carb fix. - Mayhem - 02-13-2013

I agree - nice fix.


RE: JD carb fix. - Highpower - 02-13-2013

Great save Bob. That Deere will be thumping away again in no time. Thumbsup


RE: JD carb fix. - DaveH - 02-13-2013

Nicely done Bob, Smiley-signs107
Smiley-eatdrink004
DaveH


RE: JD carb fix. - doubleboost - 02-13-2013

Very nice
Clever but simple WorthyWorthyWorthyWorthy
John


RE: JD carb fix. - aametalmaster - 02-17-2013

Here are the final pics. I made a new hex acorn nut and got it threaded. Then i bored the float bowl body out a good 1/16" with my spindle mounted boring head. Ready to ship back...Bob


RE: JD carb fix. - ETC57 - 02-17-2013

I may be slow but sooner or later I get it. 17428SlapheadSmiley-signs107
so the threaded sleeve you made was so the acorn nut that holds the bowl to the carb had something to thread on to.
Very nice indeed Bob.Smiley-eatdrink004
Jerry. Popcorn


RE: JD carb fix. - krv3000 - 02-17-2013

well dun