The Stovebolt Site Forums The Shop Area Driveline SM-420 Shift Lever Retainer Pins **

** Can anyone enlighten me as to the best fix for very loose shift lever retainer pins? ** One on each side of the tower that the shift lever goes into. Both pins on my 1953 SM-420 transmission are very loose with both holes the pins go through enlarged due to the pins bouncing around for many years. Thanks

I have made oversize pins by cutting the shank off an appropriate size drill bit.
George

** That's a thought but how do you retain them to make sure they don't loosen up and fall down into the transmission?

You need new fulcrum pins - GM # 590282

About now people step in and discuss ways to modify and replace with something not original, and generally drill out the holes (bugger things up) so you could never use the original parts again, I've even done that before I knew better.

The following thread starts out that way but ends with some great info on original parts
https://www.stovebolt.com/ubbthread...d-up-4-speed-gear-shift.html#Post1194887

I put new fulcrum pins in my 49-3100. On the new pins I put a fine thread on half the end that goes thru the housing. Used a Nylon lock nut to hold in place. Has been working for two years with no problem. With new pins shifter is tight.

** Thanks for the great reply's. ** For those with the same problem with their SM-420 and are not locked in to being completely original the fix mentioned by "Fox" seems like a great idea. Thanks Again to all for the great information.