Originally Posted by DRS
I have a Volvo
sail drive that no long has water
coming out the sea cock at the hull
joint boot. I have been able to get a rod through the sea cock and past the 45 degree bend by about an inch. It then hits something very hard. Does anyone know if there is a screen
in within the leg portion of the system? Would anyone have a schematic of the coolant plumbing
? Thanks in advance for any assitance.
I have a diagram and picture of the sea cock and there doesn't appear to be a screen in there. I looks like a "water channel" thru the lower half of the drive leg that goes down to the little inlet holes in the drive. You maybe hitting the side of the channel with your rod rather than a screen.
Have you checked for barnacles
, plastic or other junk on the inlet holes or inside the drive leg? That maybe the most likely problem.
I don't particularly like the design of cooling
water coming through those small holes and then thru a 6 ft hose to the sea strainer. The holes are susceptible to blockages from fouling and the long hose reduces water flow. I'm hauling out this week and adding new raw water
seacocks within 18 inches of the sea strainer and avoiding the cooling
water coming thru the leg altogether. I talked to another owner who made this mod and he was very happy with the improved water flow.