Originally Posted by SpcAlan1
I had to use 2 wrenches to 'loosen' it to get it to drip.
He means rotating the prop shaft by hand... you're looking for 'run out' or a wobble in the shaft as it turns. You can usually grip the coupling at the back of the gearbox and get enough leverage to turn the shaft.
1984 Fast/Nicholson 345 "FastForward"
".. there is much you could do at sea with common sense.. and very little you could do without it.."
Capt G E Ericson (from "The Cruel Sea" by Nicholas Monsarrat)