"justme" wrote in message
...
I have a small cast iron, gear pump that was working.

The gear is about an inch in diameter, .375 thick and the other gear
(idler type) is a bit smaller.

No blockages, no clogs, all looks good. However,
there are three set screws/plugs around the periphery of the pump
equidistant at 120 degrees.

This thing no longer pumps but tries to do so.

There are no leaks. I did fiddle with the plugs as it was not doing well.

Help, anyone?

Thanks

j/b



I've fixed a worn out pump like this before by taking the center section of
the pump, the one that the gears ride in, and sanding it a little thinner.
I use 220 grit sandpaper on a FLAT surface rough side up. Sand a few swipes
across the paper, re-assemble and they usually pump again.

Shawn