[R-390] Pinned Down - advice needed

[Roger Ruszkowski]

Chris,

>From reading the other replies you should be able to determine if you have 
taper pins or roll pins.

A variant on the taper pins is rivet.
The very small diameter taper pin is in fact inserted into the gear and shaft and then
swaged over on the end to keep it from falling out. The taper holds it one way and
the swag holds it from backing out. And both ends will look to be about the same
diameter.

You will need to file the small round rivet looking head off the end of the pin 
and punch it out.

Mostly some formal education on the device helps you to know for
sure if this is the design you may have.

Try a Demerol or other hobby grinder on a pin end and see what you get.
Once you get it apart you can then replace the pin.

Looking for small diameter pin punch material, try the piano wire at the hobby shop.

In addition to the stock drill bits are a whole range of drill bits of small size.

Visit a good local hardware and ask. Or visit an industrial tool store that sells
bits for lathes and grinding wheels. they will stock these odd diameter bits.

Roger AI4NI