Re Re sealing merc 500 lower unti

[Rayzor]

I put all new seals and o rings in the lower unit on my 1967 merc 50 hp. After a brief run around the lake my reward is milky oil. So made a psi tool and put 10 pounds to it. The leak seems to be coming from the large O ring that seals the prop bearing carrier to the case.
Now when I put all the seals in I did not use sealer anywhere. Just greased the seal lips and o rings and slid it together. Did I do wrong?
Should I use some form of sealer on the O ring to get it done?
Help...

 

[merc850]

Re: Re Re sealing merc 500 lower unti

procedure; torque for bearing carr. nut - 110 ftlbs.
tool for bear. carr.

 

[Rayzor]

Re: Re Re sealing merc 500 lower unti

sure seems like alot of torque for the cover nut. Its just plastic after all. Also, any idea where where this carrier contacts the housing?

 

[Rayzor]

Re: Re Re sealing merc 500 lower unti

Scratch that the cover nut was pot metal. Anyways I pulled it apart and re cleaned everything, put sealer on the area just in front of where the the oring sits, so the water side. Made a tool out of pipe like the one pictured and torqued it down to 110.
It passed the 10 pounds of air test, so I am hopeful that got it. Will update after I hit the water. Thanks for the help!