The way the pump is, the bottom (lower hose) should be the intake
and the top (upper hose) should be the outflow from the pump.

I think what you are saying is, "Did we put the pump on upside down?"
Hence it's pumping in the "wrong" direction. That may be a possibility.

I'll take a closer look at both how I have the pump now and the pictures
I have of it on the engine before.

Thanks for the idea.

Gary



"Brian Whatcott" wrote in message
...
I believe Rick has it right. But if you are not clear on the concept,
you might read right through his explanation.
So here it is again: liquid is transported in the space between
the gear teeth (you knew that)**AND THE CASE**
not where the teeth mesh....

Brian W.

On Mon, 27 Oct 2003 23:44:25 GMT, Rick
wrote:

Gary Warner wrote:

but in the wrong direction....we *must* have put it together wrong.

That type of gear pump works by creating a low pressure area (suction)
at the center of the casing where the gears move apart. The liquid is
transported around the casing in the space between the "gear teeth" and
then displaced (discharged) as the gears mesh again on the opposite side
from the inlet.

The only thing that could have happened is that the previous owner
turned the casing around and/or plumbed the pump backwards, or you are
misinterpreting the direction of flow. Is it possible that you are
mistaken in what you believe is the correct direction of flow?

If nothing else, just go ahead and replumb the suction and discharge to
work the right way. I see it uses a collection of fittings to reverse
the direction of the piping on one side anyway ...

Rick