I found that the information on "Toms = VW Page" is a good place to start.

http://volksweb.relitec= h.com/19wpump.htm

                    =     Neal

Date:    Mon, 8 Oct 2001 = 09:10:17 -0700
From:    Sonia Johnson <dscrkjohns@JUNO.COM>
Subjec= t: Water pump

My water pump just died, and I'm wondering if this is a straightforward
repair, or is there anything complex about it? I = can't find anything in
my Bently that shows how to replace it, but there is = detailed directions
for draining, refilling and bleeding the system. Does = anyone have any
advise or cautions for me?

Thanks much,
Sonia J