[C320-list] weep hole on the Yanmar

[Scott Thompson]

I have the Yanmar 3GM30F (European model). My raw water pump recently 
started leaking. Upon inspection I found two of the thumb screws for the 
SpeedSeal in the engine pan. After reattaching those, snugging up all of 
the thumb screws, and tightening the hose clamps the leak is much less 
but there is still a minor drip with the engine running.  The drips come 
from the lower (outlet side) hose clamp but I think the water is coming 
out elsewhere and running to that low point. I could not identify a 
specific source. I looked for a weep hole but can't find one. I suspect 
that is the issue, however. Could also be a worn out o-ring on the 
SpeedSeal, I suppose.

So, can anyone tell me where to find the weep hole on this pump? And 
what is a good source for a replacement if I need one? I can probably 
source one at Bayshore Marine in Annapolis, which is local to me. But 
they will charge top dollar.--

Scott Thompson
Surprise, #653