90q fuel pump questions

[Tom Nas <tnas@euronet.nl>]

Hi all,

I'm preparing myself and my car for the replacement of the fuel pump, which
is definately on the way out (even noisier than my stereo, hesitates on
anything approaching full throttle). I've ordered a new pump and jacked my
car up in order to give all joints and bolts a bathing in WD40. So far, so
good, but I'm unfamiliar with the setup. Can anyone with the same car- 1987
90q (like the '88-on 90q in the US) comment on what else I can see there?
There seem to be three things grouped close together. We're takling about
the driver's side, just in front of the rear wheel here.

One item certainly looks like a pump- it has two electrical connections and
is connected to the fuel line- or at least to a rather thick rubber hose
leading to the tank. It's about 5in long.
There's another canister-like thing placed directly under it (against the
floor of the car), which also seems to have electrical connections attached
to it. I didn't dare crawl under the car even further while it was on the
jack, to try and find out where the lines come from and go to. It's a
little larger than the first thingy. The third item is another (still
larger) canister, next to the first mentioned, which has lots of rusted-on
fittings, but -as far as I can ascertain- no electrical connections.

Does this make any sense to anyone familiar with the setup? There's no info
in my 'shop manual (which is mostly for the 80 w/mechanical pump anyway),
and there _could_ be some differences with the US setup and/or bodged
repairs (although it all looks like it's intended that way to me).

I guess all will be explained when I get my new fuel pump and filter from
the dealership, but I'd like to know what to give an extra dousing of
penetrating oil, so as to maximize my chances of getting it off without
hassle...

I did crawl under the car with my digital camera and took three JPGs that
show the setup, for anyone interested. They came out quite clear and sharp.
Let me know if you want them for identification purposes.

Appreciating your hints...

Tom- trying not to sound too ignorant (and not succeeding too well)

 _______________________________________________________________________
 Tom Nas                                          Zeist, The Netherlands
 tnas@euronet.nl
 1987 Audi 90q 2.3E, Tizianrot metallic, 164,000km

 The function of an expert is not to be more right than other people,
         but to be wrong for more sophisticated reasons.
                                                -- David Butler