lower unit still leaking whats up

[miloman]

I had the lower unit pressure tested told to change driveshaft seal so I did changed the washer on the fill and drain screw had it pressure tested held 15 psi for 1 hour so I dropped it in the lake really cold left it on the trailer started motor ran for 15 minutes checked the oils still milky whats up

 

[clanton]

Re: lower unit still leaking whats up

The pressure side of the seal only holds the oil in the gearcase. Did you do a vacumn test?

 

[DJ]

Re: lower unit still leaking whats up

miloman,<br /><br />Were you running the engine-in gear?

 

[miloman]

Re: lower unit still leaking whats up

no the boat was not in gear and I don't have the equiptment to do a vacumn test my friend at a marina will have the equiptment next week do you reccomend that I also do a vacumn test or put mufflers on and run it in gear. I cant run it in gear in the water as it was a window of opportunity and seems that by tommorrow evening the ramp will certainly be frozen.

 

[DJ]

Re: lower unit still leaking whats up

miloman,<br /><br />Clanton is correct. You need to perform pressure and vacuum tests. These are two different dynamics.<br /><br />Yes, get it vacuum tested. If it holds both ways, you're good to go.

 

[miloman]

Re: lower unit still leaking whats up

he said he will be able to vacumn est it next week it I know that you can pressure test it easily at home thanks to you guys whats the procedure to vacumn test i thought that in order to get a somewhat milky oil it had to be in gear

 

[DJ]

Re: lower unit still leaking whats up

miloman,<br /><br />The vac. test is just reversed of pressure. You can buy a hand vac. pump at an auto parts store for just a few $$$.

 

[miloman]

Re: lower unit still leaking whats up

I might go tommorrow should it be specific to marine applications