I have twin 2003 Captains Choice 5.7. Raw water pumps are crank mounted Sherwood P-105. They used to last quite a number of years but lately I seem lucky to see two years of service...less than 200 hours. Failure mode is always a salt water drip at the shaft seal. I saw today the starboard again has a drip. Port was replaced several months ago.
It is kind of a reach around blind mount but I take care to mount it solid and check for wobble after mounting. Same life issue on both motors. I thinking maybe the pumps are not as good as before? Or maybe I'm not!
I have to loosen the anti-rotation arm to get the pump mounted. When I tighten it back on block perhaps it puts a load on that is not needed. I have read on this forum that some members just use the hoses to stop rotation. Might that help? Hoses are original so I might be a little nervous about putting a new load on them.
Or perhaps another brand of pump (Johnson?) has a better seal. Are there different types of seals available in pumps that will fit on this engine? (I have plenty of room in front of the pump).
Back when I could always find one on sale for less than $200 it was not so bad. Now the best prices seem to be about $300.
I will order a new 105 next week, in the absence of some good advice or suggestions. Anyone have a good idea?
It is kind of a reach around blind mount but I take care to mount it solid and check for wobble after mounting. Same life issue on both motors. I thinking maybe the pumps are not as good as before? Or maybe I'm not!
I have to loosen the anti-rotation arm to get the pump mounted. When I tighten it back on block perhaps it puts a load on that is not needed. I have read on this forum that some members just use the hoses to stop rotation. Might that help? Hoses are original so I might be a little nervous about putting a new load on them.
Or perhaps another brand of pump (Johnson?) has a better seal. Are there different types of seals available in pumps that will fit on this engine? (I have plenty of room in front of the pump).
Back when I could always find one on sale for less than $200 it was not so bad. Now the best prices seem to be about $300.
I will order a new 105 next week, in the absence of some good advice or suggestions. Anyone have a good idea?