YouTube has a video.

https://www.youtube.com/watch?v=_WCRcuCZI50

Jim

> On Feb 13, 2016, at 6:09 PM, kenneth wilford (Van-Again) <kenwilfy@COMCAST.NET> wrote:
> 
> John, The system uses shop air to create a vacuum.  You put the tube with
> the small strainer on it down into a gallon of antifreeze that can be
> sitting on the shop floor.  You push a button and it pulls a vacuum on the
> cooling system.  There is a gauge and you pull the vacuum until the gauge
> gets to a certain reading, then see if it holds.  If it does then the
> system has no leaks and is ready to fill.  If it won't hold a vacuum then
> you have a leak that can be addressed before you put any coolant in the
> system.  No hot coolant spilling on the floor, etc.  Once you are ready to
> fill the system you just flip a lever and the coolant starts flowing.  Once
> you use up a gallon,  you flip the lever and put the tube down into the
> next gallon and open the lever again.  Very little effort or mess is
> involved.  You keep adding coolant until the gauge gets to zero and the
> system is full with no air.  Now you can put the pressure cap on and you
> are done with no jacking up or bleeding.  The unit comes with instructions
> but no case unfortunately.  I keep mine in a plastic bag to keep it clean.
> 
> For someone who rarely bleeds the Vanagon cooling system it probably isn't
> worth buying.  To me, someone who does the bleeding job a few times a week
> at some points of the year, it makes it much easier and painless.
> 
> Ken