water in lower Unit

[crzy4wlvs]

I drained and refilled my lower unit for the winter. During the process Lots of water came out, and the gear lube looked really cloudy and "milky". Is there some sort of gaskett that Im going to need to replace?...and if so, what is the procedure Im going to have to follow? I have a 1979 100 hp Johnson outboard...I tried to look in the rest fo the forums to find this out but I could'nt seem to find it...Thanks a bunch

 

[angus63]

Re: water in lower Unit

First step is a factory manual. There are lotsa seals to replace + waterpump if it's been a while.<br />It is not very difficult, but if you are going to do it yourself, get a manual.<br />Good luck

 

[OBJ]

Re: water in lower Unit

Angus is right crzy.....the job is not difficult but a manual to go by will help immensly. There are two seals for the drive shaft, two for the prop shaft, O'ring for the bearing carrier and and o'ring for the shift rod. You can get all these in a seal kit from any John/Rude dealer.

 

[crzy4wlvs]

Re: water in lower Unit

Thanks a bunch for the replies.....I ordered a new manual and seal kit......I'm going to be better safe then sorry, and replace all seals mentioned above.......Would it be a good idea to wait untill spring to intall the new ones?

 

[Solittle]

Re: water in lower Unit

I wouldn't wait if you had water in the gearcase. All the more time for rust to form.

 

[spratt]

Re: water in lower Unit

Not usre of the protocol here...should I open my own post, or can I build on this one?<br /><br />My 1966 Evinrude 40 HP Electro-shift motor had water in the lower unit oil. I drained it, run fresh oil in, ensured the screws were nice and tight, and took it out again. When I got home, I checked and teh oil was very creamy, meaning (I assume) the oil had water in it again. Adn the level was higher, as it really began draining when the screw was removed. Where, besides the seal behind the prop, woudl water enter the gear oil chamber? I am going to be ordering a lower end seal rebuild kit, and a water pump kit, within the next few days. I have a Selco manual, so I know I can get this taken care of, but just wondering where the water entry possibilities are?

 

[Solittle]

Re: water in lower Unit

A couple of thought for both of you - First it is common for water to enter the gearcase via old/leaking gaskets on the fill/vent screws so it is a good idea to replace those, refill, run it and test again before replacing the other seals. If it still leaks - - Next you should do a pressure test to determine where it is leaking.

 

[Evinrude Boater]

Re: water in lower Unit

Right you are So Little. I became a pit stop mechanic doing mine so many times. Then I pressure tested it and found the case had cracked from the water freezing in the bottom of the case (Water separates from oil and sinks). Lesson 2: Change the gear oil when winterizing. The vertical shaft seals were the biggest culprit because the water pump pressurizes and forces water by the seals. OMC changed the seal configuration on my 75hp but the manual wasn't clear on that. Live and learn! Unless you want to replace everything while it's apart, I'd recommend the pressure test right away. Look for fishing line around your prop shaft, nothing eats seals line fishing line!!

 

[Fishon1]

Re: water in lower Unit

A question on the pressure test. How much pressure do you put in? Does it matter if you use the upper or lower hole? How long should it be able to hold the air pressure? What equipment do you use to determine if you have a leak?<br /><br />Thanks