I've got the external pump. Under the false floor in the cupboard. Maybe you have no false floor?!  I'm pretty sure the external pump is a Canadian requirement. 

Jeff

> Date: Thu, 4 Jul 2013 22:25:50 -0400
> From: dbeierl@ATTGLOBAL.NET
> Subject: Re: Fridge go POOF!
> To: vanagon@GERRY.VANAGON.COM
> 
> At 10:10 PM 7/4/2013, jpalmer@mymts.net wrote:
> >Cleaned out the fresh water tank with a bit of bleach and ran
> >through the lines. Turned on the pump to flush. So far so good.
> >Turned on the pump again and it must have picked something up?  Runs
> >but no output. New pump two years ago. Argh!  Where is the most
> >likely plug?  In the tank or at the pump?
> 
> If it's the newer kind with a little centrifugal pump in the tank it
> may just be air bound.  Suck on the faucet while the pump is running,
> see what happens.
> 
> I've never seen the external pump, dunno how they work.
> 
> Yrs,
> d