How do you find a gear case leak?

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oldiron52

Cadet
Joined
Jul 31, 2009
Messages
12
I know I have a slight leak in my gear case. My question is what is the best way to find where the leak is? No oil in gear case submerged in water with 5 lbs pressure on it and watch for where air bubbles are coming out?? In advance, thanks for looking?. Scott
 
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Yepblaze

Yepblaze

Lieutenant Commander
Joined
Jun 1, 2001
Messages
1,686
Re: How do you find a gear case leak?

oldiron52 said:
No oil in gear case submerged in water with 5 lbs pressure on it and watch for where air bubbles are coming out??
Click to expand...

That's what I'd do. I'd go find that ground down bike tube valve stem I made to adapt the bike pump to it.
 
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oldiron52

Cadet
Joined
Jul 31, 2009
Messages
12
Re: How do you find a gear case leak?

Do I have the pressure right? 5 psi?
 
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cannonford57

Petty Officer 1st Class
Joined
Mar 5, 2008
Messages
353
Re: How do you find a gear case leak?

we test 10 to 12 lbs. at our shop...
 
M

mmf

Petty Officer 2nd Class
Joined
Sep 4, 2008
Messages
136
Re: How do you find a gear case leak?

better check pressure and VACUUM. I have found several that would not show a leak with pressure (pushing out on seals and "o-rings") but leaked alot when subjected to the vacuum test!
 
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