Well, took a weeping pump off, replaced with a good one, so I thought, we're is the leak, is it a gasket or an O ring, undone the four cross heads screws, and found the problem, one of the screws had corroded and broke, allowing coolant to weep out, so took the other 3 out, cleaned ever thing up, don't lose the very small washer on bottom of impeller,
Reassembled, smear of silicone around edges, be care full when tightening up screws, as too tight and it jams the impeller,so a bit of loosening was needed,,,, one repaired auxiliary pump,, sorry forget to do pictures.