Quick questions about the water seal on the Sherwood G908 raw water pump. About a year ago I replaced the raw water impeller but noticed slight leakage at the pump housing weap hole recenlty. After pulling it apart I noticed these small holes/indents in the attached photo at the rasied circular sealing surface which I had mounted against the steel plate surface and towards the engine. Didn't know the impeller was directional and perhaps it's not but it seems these holes offer a pretty clear path for water to get past and into the area between the impeller and bearing housing. So the questions are: 1. Is the raised circular rubber part of the impeller the primary water seal or is it the spring tensioned rubber washer and ceramic glide bearing that are behind the impeller and over the shaft? 2. Is the impeller directional in relation to the small indents in the attached photo?
Vento Caldo 2098