Bentley shows two fuel filters. The small filter  upstream of the pump
located between the tank and the pump is actually a screen intended to
keep larger junk out of the system to protect the pump. The pump itself
is a roller ball type pump and the rotor with the balls in it runs in an
eccentric in the stator, thus causing the balls to move in and out of
their respective groves, thereby pumping the fuel. The larger filter
downstream of the pump is a very fine filter to further extract any fine
particles from the fuel.

Dunno about hose clamp sizes.

John Rodgers
Clayartist and Moldmaker
88'GL VW Bus Driver
Chelsea, AL
Http://www.moldhaus.com

On 8/4/2010 1:53 AM, Troy wrote:
> Hi folks:
>
> I just popped my head under the van to check whether I had spade or round terminals on my fuel pump, as I wanted to get a backup and notice there are two fuel filters. One charcoal canister type and then another square plastic one. Is this normal on most vehicles? Why are two needed? Curious minds want to know. Also, I think I will go ahead and order some fuel hose clamps while I'm at it, what size clamps do I need? Looks like there are six of them, and then I think after the charcoal canister it goes to a larger diameter hose? Bentley 20.27 doesn't indicate hose size.
>
> Troy
>
>