Pressure testing outdrives

[apsanford]

I purchased a adapter to pressure test my Mercruiser I/O.
It appears pressurizing it up to 15 psi and check for leaks. looking for some tips and assistance with this procedure. I'm getting water in the gear lube.
I was thinking to use dish soap and water around the seals external, but what about those around the water pump, shift seal, etc? I have the gear lube drained currently. Thanks if you can give me any tips.

 

[CheapboatKev]

Re: Pressure testing outdrives

Heres some reading for ya

http://forums.iboats.com/showthread.php?p=1573303#post1573303

 

[achris]

Re: Pressure testing outdrives

Pressure testing will only find seals that are leaking oil out of the drive. You're getting water into the drive, so you need to do a vacuum test....

Chris.......

 

[apsanford]

Re: Pressure testing outdrives

Thanks! Good info thread. The pressure tester I found on Ebay. I plan to use my electric tire pump, and stop between 10-15 PSI.
Sounds like your boat is simular to mine.

 

[apsanford]

Re: Pressure testing outdrives

I think I have a gear oil leak and water intrusion issue. Good point if water comes in and not leaking out. It leaves a light film on the water when floating for awhile. I use a Mityvac tool when I did carb work, so it should to the job with my boat too. Thanks, Good Tip!