mercruiser trim pump reservoir leak

[SabrToothSqrl]

Found some motor oil on the port side under the trim reservoir. Brand new OEM one too. Pulled the assembly out, cleaned everything up. It appears to be leaking between the 2 parts that make up the reservoir. What a stupid design. Why is it 2 pieces? this could easily be 1 piece.

I googled trim pump reservoir leak and found others with the same issue.

Boats are fun. Found a few new in box ones on ebay.

I'll inspect them, and I'm thinking before I add oil, I'll run a bead of glue around the parts.

 

[SabrToothSqrl]

I stuck a flat screwdriver into the split in the tank. It is 2 pieces, I assume it's ultrasonically welded together. Where the leak was, it split very easily, as I tried to expand the split, it was nearly impossible.

I'm guessing this was a defect from new. Hopefully my next one is better.

 

[AllDodge]

Agree, most likely a defect
Could probably use heat and melt it back together, but new will be better.

 

[SabrToothSqrl]

All I want for Christmas is an oil free bilge.
new one seems solid all the way around.
The way these are shipped/package, I wonder if the original was dropped and landed on the corner w/the lid.
The motor is very heavy. Well, heavy for the size of the thing.