I re-found that write-up on how to fix leaky C4 gear selector shaft.

http://www.allfordmustangs.com/foru...shaft-throttle-valve-shaft-leak-solution.html

Came across this a long time ago, then lost it. Saved the site this time.

Need to do this to stop the puddle in the garage.

Anyone on here done this?

 

haven't done that mod but have replaced the O ring. not a bad job.
did you read all the replys to that thread?

caution...when breaking the nut loose, hold the leaver, don't let it bottom out on the case.

 

I replaced the o-ring, and if I recall correctly, there was another seal that I had to swap from inside. Did not affect the leak at all. That was when i started searching the internet and found this with all the drawings and pictures.

Makes sense, if it is correct.

 

Made it to page three. Paul S chimed in there.