I just acquired a basket case Cub. It shows promise. I started by cleaning out the carb with ChemTrol. It was dry and everything was corroded and stuck. In taking it apart I either broke the idling tube off at the threaded end. It may have already been broke, either way, the threaded end is still in the top part of the carb. My question is how to I get the short threaded end out
of the carb without screwing up the threads. They are very tiny. I have a tap and die set but nothing small enough for these threads. Looks like my only hope is try to pick out the remaining pieces of it with a small darn needle or a sharpened ice pick.
Any suggestions??
Dave W0dlr
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IH Carb question
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Re: IH Carb question
I have never had to remove one, however, I have a set of left-handed drills for things such as this.
Bill
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Re: IH Carb question
DITTO!!! Left hand drill bit, hand drill--don't use a power drill. The threads are 4-48 I believe. There have been several posts on this subject in the last few months. You should be able to find info by using the SEARCH. Stan
EDIT: There are several forum members who specialize in carb rebuilding.
EDIT: There are several forum members who specialize in carb rebuilding.
Stan in LA (lower AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
USAF & Reserves, Reg ARMY, ARMY NG (AL)
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Re: IH Carb question
Dave, Welcome to the Forum. The best course of action is to spray the broken end with a good penetrating oil for several days. If you have access to small left handed drill bits like Bill suggested, only use them in a pin vise. An electric drill will pull the bit in faster than you get your finger off the trigger. I use two small bits (i'd have to look up the sizes). The first follows the hole and you can feel when you fall through the end of the idle tube. The second is the size for the 4-48 tap and usually unscrews the remaining brass with it. Hopefully the long end is loose as those can be a bear to drill out.
Bob
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Re: IH Carb question
Welcome to the forum from Arkansas. Getting experience right off the bat. Little time and patience. You can still purchase the idle tubes after you get the end out and you can still get the tap and dies if needed. I have one but still prefer to keep an extra idle tube.
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Re: IH Carb question
Use 3/32" left hand drill bit as outlined above.
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