resealing a lower unit

[keefallan]

How difficult is it to reseal your lower unit. I have a short shaft v6 lower unit off a mid 80's evinrude. THe motor was an '84. SO i guess that's a E150TLCR.......NOT THAT MATTERS MUCH FOR THE GEAR BOX. I've always sent it out to be done by others. But on the other hand, I have rebuilt many motors before. A cuple of outboards and quite a few 302's and 350's. Any advise? Any special tools? I have a manual.

 

[HighTrim]

Re: resealing a lower unit

If you can rebuild a powerhead resealing a gearcase is a piece of cake. With the manual and the help on here should be no problem.

 

[boobie]

Re: resealing a lower unit

The first thing you should do is have it pressure & vacuum tested to find out exactly where it's leaking.

 

[keefallan]

Re: resealing a lower unit

I don't know that its leaking at all. It came off a parts motor. The oil looked like sludge(no signs of water though). I mean it was super thick. I only got out 1/2cup of oil. It spins fine. the unit shifts(all this by hand). It came off a saltwater engine. I'm building a 235 engine from scratch. This will be the outdrive for it. I just want it to be "new" like my powwerhead will be. I'm anal like that.......especially if it wasn't mine to begin with. If it had full oil and wasn't salty, maybe I'd leave it alone. I guess I'm looking for piece of mind. Am I wrong with this line of thinking? Suggestions?

 

[robert graham]

Re: resealing a lower unit

Maybe drain it and refill with fresh oil, run it a while and check for any leaks?...maybe the seals are fine...save yourself the time&$$$$

 

[wilde1j]

Re: resealing a lower unit

I would leak test it first. No compelling reason to replace seals if there are no leaks. If no leaks, just fill with gear oil and ready to go, assuming no mechanical issues.