Re: lower unit pressure test?
Yes. drain the lower unit. Before discarding the old lube, run your finger thru it,and feel for chips,larger than a grain of sand. If you feel any, the gears and/or shafts are damaged.<br />Lower unit hold a very small volume of lube,and therefor,hold a very small amount of air.<br /><br />Get an airtight connection to the vent or fill screw. Use an air gauge so you know how the pressure in the lower unit.<br />Submerge the L/U past the intake in a large garbage can (prefeably with a drain in it.Pressurize in VERY SHORT bursts,while observing a pressure gauge.<br />No more than 10lbs of air.<br />Look for the bubbles.<br />Bubbles out of the water intake= leaking drive shaft seal.<br />Bubbles out of the prop= prop seals<br />No bubbles? Observe the gauge.It should hold,or fall very slowly (like 2 or 3 hours),but not below,say 5lbs. No bubbles or pressure-drop, you had a bad seal on either the vent or fill screws.<br /><br /><br />------------------<br />I'm no expert, but I DID sleep at a Holiday Inn last night!
