Suzuki dt9.9 pressure testing the lower unit

w2much

Lieutenant
Joined
Jun 22, 2005
Messages
1,288
Just to confirm while pressure testing this or any lower unit, does it need to be empty or full of gear lube. My l/u will hold 10 pi for over an hour while empty of fluid. At 15 pi I can see tiny bubbles slowly leaking from the front of the propeller shaft seal when held underwater . I don't mind buying new seals but I can not remove the prop shaft.
 

99yam40

Fleet Admiral
Joined
Sep 7, 2008
Messages
9,100
how can you see bubbles of air the the case is filled with oil?

Not sure any manual would say to pressure test full of lub or at 15 psi

Do you have a service manual for your motor?

are you getting water into the lower unit?
 
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