[s-cars] Steering lock replacement?

[Phil Hainline]

This is regarding a 1993 S4.

First, many thanks to the list for all the references
to the "how-to's" on the ignition switch replacement.
30 minutes later, I had the switch out, and it wasn't
the problem.  I could start the car with screw driver
(in the switch) with the normal  force.

The key does unlock the steering wheel.

However, reaching around to the back of the
assembly, I couldn't feel the center tang rotate at all,
while manipulating the key.  Thus I'm guessing the
mechanical part of the steering lock has failed.  At
$230-250 special order, I'd like to remove it first to
be sure.  I've heard that you can drill out a pin and
use your existing lock cylinder.

However searching my  (mostly contiguous) 56K
messages back to Jan 2003, I couldn't find any
techniques on replacing the steering lock.

The assembly is fairly accessible, but without obvious
fasteners, clips, etc (and being a security device) I guessing
the is either a subtle technique, or major disassembly of the
steering mechanism.  Has anyone BTDT, or can quickly
describe the technique?

Many Thanks,

- Phil