At 08:55 PM 3/16/2009, John Rodgers wrote:
>the case and to be held there by the grip the ribs and grooves had on
>the aluminum case. I THINK I found it in one picture in the Bentley but
>there was no real explanation nor anything  about any repair. (sorry,
>the Bentley is at the shop tonight so I have no reference page or image
>I can reference). IF I had it right, the Bentley calls this a TDC
>Sender. It obviously was in bad shape and in need of repair. But truly,

It does nothing under normal operation.  It's supposed to be
connected to a 3 (?) pin plug mounted to the alternator, so that some
esoteric piece of VW gear can be plugged in and detect TDC with
it.  It's a coil with an iron core, generates a little pulse when a
magnet goes whizzing past it.  Presumably there's a little magnet
buried in the flywheel at the appropriate place.  In regular
operation it's as useful as the proverbial appendages on a boar hog,
or those tiny ice cube trays in the Westy fridge, i.e. not.

  --
David Beierl - Providence RI USA -- http://pws.prserv.net/synergy/Vanagon/
'89 Po' White Star "Scamp"