5K Avant fuel pump replacement

[Sam_Bateman@vapower.com]

Hello All;

I have an '85 5K Avant on which the fuel pump is quite silent.
This silence is borne-out by no pressure at the fuel distributor.
My question is - how do I get to the top of the tank and the sender
unit/fuel pump?
I'm working from a Haynes manual, don't have a Bentley (anyone got a used
set for sale reasonably?).
It mentions the accessing the sedan's pump by way of a hatch in the luggage
compartment but the Avant's tank appears to be under the rear seat.
I looked pretty carefully and didn't see any access plate under the seat.
Any and all comments and suggestions are appreciated.

Sam Bateman
Fork Union, VA
'85 5000S Avant
'87 Vanagon GL