Merc 90 ELPTO lower unit crack? In shift shaft tube

Sparkinator

Chief Petty Officer
Joined
Aug 15, 2009
Messages
423
Going back together after changing seals and inspection. All the gears and bearings looked good. All the seals have been replaced and I was cleaning up the shift shaft tube and noticed a hole in it.

It doesn’t look like it’s supposed to have a hole there, and it looks kind of jagged on the edges like it may have gotten some freeze damage. The hole is in the tube next to drive shaft tube. It doesn’t appear to be open to anywhere water could get in or oil escape, but I don’t know that.

I’m gonna pressure test it once assembled, but if that hole needs to be patched I’ll do that first.

So so is that hole supposed to be there?

TIA
 

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racerone

Supreme Mariner
Joined
Dec 28, 2013
Messages
39,215
A hole that big would allow a lot of water to get in.----Pressure test it after assembly.----I think you will be fine and no reason to worry.
 
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