We replaced the face plate on the water pump of our Bav 34 with a Speedseal kit which I used on my previous boats and found to be a major safety improvement.
The kit consists of a thicker cover plate with a rubber ‘O’ ring seal instead of the paper gasket. it is held on by 4 steel screws with large knurled heads so it can be removed by hand. the plate swings down out of the way on one of the screws as the others are in slots. This allows for a quick change of the impeller regardless of the working conditions. If you have ever had to change an impeller in a rough sea in the middle of the night you will get the picture.
I hope you have used a soft locktite as the original screws are a bit delicate and easily damaged on removal.
I don’t have any connection with Speedseal, I JUST KNOW IT IS A SIMPLE AND VERY PRACTICAL UPGRADE that I wouldn’t be without.
Another little problem I have found with the electric bilge pump on the bav 34 is the position of the switch on the panel is next to the shower sump pump. We managed to burn out the bilge pump when someone switched it on instead of the shower pump and it ran so quietly we didn’t notice until it started to smell rather hot. The diagrams on the panel ensure this is an easy mistake to make.