Pressure Testing Lower Unit

[tex599]

Any advice on how to pressure

Any advice on how to pressure test a lower unit? Can I use air compressor with the lube pump connector? Any ideas on homeade devices?

Thanks

 

[joereeves]

Drain lower unit. Replace eith

Drain lower unit. Replace either the drain or oil level screw. Use compressor with the air pressure set between 7 to 12 psi. A smal short piece of fuel hose jammed between the air nozzle and the screw hole works for me.

The leak should show up by sight or sound (or both).

 

[Sleeper]

"I think this is what you are

"I think this is what you are looking for. Good luck! http://www.boatparts.ca/omc-cobra-parts/testing.html"

 

[london marine]

Never use a compressor.There i

Never use a compressor.There is too much risk to yourself and the lower unit from overpressure. Use something like a bicycle pump and a 3/8-NC threaded adapter to pressurize.

 

[joereeves]

London..... The compressor rou

London..... The compressor route is fine and safe. Just do not exceed the 7 to 12 psi. A higher psi might cause a bad seal to actually seal momentarily creating a false determination of its sealing qualities.