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Alpha one Gen two water intrusion.

T

ToddMThayer

New member
91, 5.0LX hasn’t been in the water lately. Ran it with the muffs and later developed an oil leak out of the weep hole on the outdrive. The shift shaft seal was leaking. Oil was milky. Replaced that and the impeller while I was in there. Made sure the o-ring was installed. Filled it up and ran it again. Drained and milky. The oil leak is fixed. Everything else looks good on the lower. Where do I go from here? I read pressure test. If so, how do you find the problem when everything is back together?
 
with a gen 2, pinch the oil line (gently) that feeds gear lube from resevoir bottle.

Drain entire drive of gear lube.

Once drained you need a hand pump with a gage and the correct threaded fitting for the drain hole/vent hole threads.

Install hand pump into one of the threaded holes, install original plug into other hole. Pump to ~15 psi and should hold solid for 1-2 minutes. If not listen carefully for area/location of leak.

Look up on google, STEVENS GEAR CASE PRESSURE CHECKER, to see what is used for this. I have both pressure and vacuum checkers.

Based on gen 2 lower design, you have the shift shaft seal/bushing and the lower case vertical shaft seal with oring under impeller assembly that are most likely primary leak points. The prop shaft carrier has back to back seals and a very large oring (which seals carrier to housing) but are less likely the source.

Only a pressure check will reveal the source.
 
Here is what it looks like.

Maybe you can make your own if you have the materials and ability. You can used compressed air but you need to adjust/set PSI to ONLY 15 psi. Have a on/off valve inline to keep any air from leaking back.

21636641_0.jpg
 
Possibly. But if the drive doesnt hold pressure, you HAVE to remove to repair...
Remove lower if leak is from lower, or remove entire drive if leak is from upper.
You said you "fixed" what you thought were the issues. Pressure check confirms so theroretically you should not have any leaks....
 
kghost said:
Possibly. But if the drive doesnt hold pressure, you HAVE to remove to repair...
Remove lower if leak is from lower, or remove entire drive if leak is from upper.
You said you "fixed" what you thought were the issues. Pressure check confirms so theroretically you should not have any leaks....
Click to expand...
Thanks!
 
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