Prop Shaft Water Line

BobFino

Active Member
SILVER Sponsor
Aug 26, 2010
189
Virginia Beach
Boat Info
Sea Ray 550 Sedan Bridge 2005.
Engines
MAN 900
Twin Disc MG-5114
The two water lines for cooling/lubricating the prop shaft. One line goes to the oil cooler in the gear box. The other line goes forward through bulk head or at least that is the way it looks. Where is it going and where does it pick up the water from?
Thank you

Prop Shaft Water Lines.jpg
 
Sorry, the picture I upload is correct. Why it is flipped on the attachment, not sure.
 
I don’t have your same boat but it likely goes to the other engine (or in your case, trans cooler)

they’re dual plumbed so you can run on one engine but still get dripless cooling water while that side free wheels.

any T’s coming off the coolers that could split to both sides?
 
I don’t have your same boat but it likely goes to the other engine (or in your case, trans cooler)

they’re dual plumbed so you can run on one engine but still get dripless cooling water while that side free wheels.

any T’s coming off the coolers that could split to both sides?

I do see 2 spare seal carriers, that's a bonus.
 
The two water lines for cooling/lubricating the prop shaft. One line goes to the oil cooler in the gear box. The other line goes forward through bulk head or at least that is the way it looks. Where is it going and where does it pick up the water from?
Thank you

View attachment 103070
The other line goes to the other dripless seal assembly; it ties the two together so either water supply cools both seals.
 
Great, thank you for the info. A little more explanation on why I was asking. I removed my two gearbox oil coolers for servicing. I have the two water lines that went from the shaft seals to the oil cooler blocked off, it seemed that a steady stream of the water just kept draining without slowing down. I thought maybe the other lines that go to the shaft seals were picking up the water, but I could not figure out from where. The lines seem to go forward but maybe I didn't give them enough time to drain fully. I will take another look.
 

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