[Vwdiesel] TD Injection Pump locking hole

[Val Christian]

>  locking tool for later maintenance. There are all different size
>  holes in this sprocket. Some have advised using a 7/16 Craftsman
>  deep 1/4 inch socket as locking pin.  Does someone know the actual
>  pin size, closest SAE? I have a 1/4 inch deep socket not craftsman.

The 7/16, 1/4" drive Craftsman socket does indeed fit, however, I've
found that using a 1/4" drive older style Craftsman 11mm deep results in an
even tighter fit.  There's less than .005" slop.  25 years ago, I took
that socket out of circulation, and keep it for setting injector pumps.
I don't have a loose pump sprocket hanging around, but if you want, I could
at least mic the socket.  Advise if you want me to do so.