Bravo3 separating upper and lower gear cases

[bobterisch]

Hello everyone,
I need to separate my upper and lower gear cases to clean the water passage due to bad barnacle growth this season. Is there any other maintenance or things that I should look for while the gear cases are apart? Also any special things to know for reassembly? Serial BravoIII OM129097
Thank,you,
Bob

 

[alldodge]

Hello everyone,
I need to separate my upper and lower gear cases to clean the water passage due to bad barnacle growth this season. Is there any other maintenance or things that I should look for while the gear cases are apart? Also any special things to know for reassembly? Serial BravoIII OM129097
Thank,you,
Bob

If you don't find any water in the drive, just need to replace the seals and check the carrier bearing housing for corrosion. Pressure and vacuum test, then grab the prop shafts and see how much play you can feel (should not be much), and your good

 

[bobterisch]

No Title

Thanks for the reply. Do I just change the o-ring in the picture on the driveshaft housing? I can't seen to find a part number for on schematics.

 

[alldodge]

I would replace items 3, 4 and 18.
Could replace 5 if its not pliable, but most the time its fine as-is

http://www.mercruiserparts.com/bam/subassembly/30968/5398/110

 

[bobterisch]

Thanks again.