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Water in gear lubecauses

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Sal

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" Noticed when I drained the b

" Noticed when I drained the bottom gear lube at the end of this season that the oil was extremely milky in appearance. I know this is water, and besides the obvious (leaking in from bottom plug), what are the other possible sources of this leak. I try to do as much as possible in the repairs on both boat and motor.Thanks for your reply. "
 
Hi Sparky-
Thanks for your r

Hi Sparky-
Thanks for your reply.Will try this.How do you pressure test the gear case? Simple?
I have a Clymers book but I'm not a mechanic so alot of the terminology is hard for me to comprehend. I try to learn as much as possible
to keep this motor/boat in excellent shape.
I think I've learned more from corresponding to all that frequent this boating chat service than from the book. Have a great off season!
 
" Sal,

Pressure testin

" Sal,

Pressure testing is just pressurizing the area inside of the lower unit. The word on the street is no more than 7-12 psi. Pull the lower unit off, hook up an air compressor (or even a bicylce pump) to the drain hole and leave the plug in the vent. Cover the lower unit in soapy water or submerge it - look for bubbles - just like finding the leak in a tire. This is easiest done when the lower unit is drained, as it will be air escaping.

All I've ever had to do to find a leak is put my finger over the vent hole as I fill the lower unit. If there's a leak of any substance, you will hear the air escaping; if pressure is building and no leak is heard, it's not much of a leak.

It's either going to be something obvious - around the vent or drain hole, cracked lower unit, or it's going to be something to do with the bearing carrier/propshaft, driveshaft or shiftshaft. Good luck,

Jon "
 
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