Bravo 3 gear lube leak

[JayhawkCurtis]

I own a Sea Ray with a 350 mag and a Bravo 3 drive. Late in the summer I started noticing lube leaking from behind the props, I figured it was prop shaft seals. when I drained the lower unit there was some water, and milky oil. The boat is an 04. I pulled the props, and it appears the lube is leaking from the slotted area, which I am guessing is the exhaust ports. I split the case, and I do not see any lube in the port that comes from the upper unit. Thoughts on this?

 

[alldodge]

There is a small hole in the center of the drive and it uses an o-ring to seal next to the exhaust port. This pic is showing the differences in years on the housing, but just note where the o-ring and oil port is.




If its not leaking at the prop shafts my next thought would be the shift shaft seal.

 

[alldodge]

Remove the back cover (item 32 above pic) and if you find lube in the lower slot, then most likely its the seals pointed out in the yellow arrows.