Todd,

The square plastic filter is used on the earlier vans and is a pre-filter
(between the tank and before the pump).  The cylindrical metal filter is
designed to be installed after the pump on the pressure side of the system.
Do not use the plastic filter on the pressure side as it is not designed to
withstand the operating pressure of the system.  It is a good idea to use
both filters as the pre-filter will take out any sediment / debris before it
wrecks the rollers in your fuel pump.  As the pre-filter becomes plugged up
your pump will indeed begin to whine as it develops vacuum between the inlet
and the pre filter;  don't let the pre-filter go this long.

Justin Jensen
SLC Utah

-----Original Message-----
From: Vanagon Mailing List [mailto:vanagon@GERRY.VANAGON.COM]On Behalf
Of Todd Guttman
Sent: Sunday, September 17, 2000 7:03 PM
To: vanagon@GERRY.VANAGON.COM
Subject: Bosch metal fuel filter - made for same or different fuel line
diameters?

On returning from our last camping trip in our 85 Westy - heard a high
pitched whine coming from under the van.  Did a search on the list and
discovered quite a few posts noting that this may be a clogged fuel filter
or a fuel pump that may be on its way out.  Ordered a new fuel filter from
one of our list vendors and received a Bosch metal one - apparently good.

The old fuel filter that was on the Westy was plastic and square and full of
rusty sediment.  The filter's 'intake' line from the tank, however,  appears
to be 5/16" while the 'exit' line to the fuel pump is larger - possibly
7/16" or 1/2" diameter.  The replacement fuel filter has two identical
nipples for intake and egress - both appear to be designed for the smaller
5/16" line.

Did I get the wrong filter from the vendor (Bosch #71028) or is there only a
'Universal' filter now available designed for equal diameter lines?   My
search of the archives didn't yield an answer.

Thanks for any help.

Todd Guttman
85 Westy 'Rivendell'