Why is this seal so much smaller ??????????

[monriverguy]

Just got the lower unit seal kit for my 1964 28 hp Evinrude but the seal look so much smaller can any one explain
Please..........

 

[flyingscott]

If you mean the height it is because OMC changed the seals on the propshaft and driveshaft. There are 2 seals where there was only one and they go in back to back

 

[monriverguy]

I ony got one seal in the kit the kit it is not ome i got the serria kit from here ... What should i do dont want to have to do the lower unit twice this is my first time....

 

[racerone]

New style seals and I believe they only use one seal on the 28 hp models of 1962 to 1964

 

[monriverguy]

what way do they go in the metal side up thats the only way i can see them working and only way you be abel to take them out again........

 

[racerone]

???-----That spring thingy faces the oil.

 

[F_R]

It goes in lip/spring side toward the oil. You can take advantage of the thinner dimension by pressing it in at a different depth to avoid having the lip ride on a worn place on the shaft (if it is worn).

 

[flyingscott]

I stand corrected ,sorry about that my 1961 5.5 hp had 2 seals in the kit for propshaft and drivehaft. I made an assumption that the 28 would be the same.

 

[monriverguy]

ok sorry to ask so many questions but this is my first lower unit seal job, so do i just use one seal or should i order another? the kit is suppose toa replacement ...what say you all?

 

[AlTn]

a gearcase diagram shows that seal going inside the "oil retainer"..doubt there's room for 2, but I've never fooled with a gearcase that had an "oil retainer"....if racer and F_R go with 1 that's the route I'd go

 

[F_R]

It all boils down to one factor. Is there room for two in the seal retainer? I don't think there is, but if so, take advantage of it and use two, back to back. One spring facing the oil, other facing out toward the water.

 

[HighTrim]

I would not go out and order another seal if you don't have one. The one seal is fine. They do not make them the same width as the originals. You wont have enough room for 2 anyways. The original seal was .313 wide. The new seal is .250 wide. The originals pretty much filled the retainer if I recall correctly.

 

[monriverguy]

ok i hate to be dumb put i am a newbie at this so the seals in the pic are from my prop shaft that goes in a housing you all saying to put the spring towards the oil and not toward the water, is it not there to keep the water out ? just not making since to me please help as i want to do this in the morning

 

[racerone]

Not sure why you want to question years of experience here ?

 

[monriverguy]

not questing just want to make sure i understand i have no idea how to do this it is my first one and i dont want to mess it up. thanks for all you advise on here as all i know about outboards i learned from here

 

[HighTrim]

Listen to the advice given here, springs towards the oil. You wont go wrong with that.

 

[monriverguy]

ok spring towards the oil it is i will let you know how it comes out thanks for everyones help

 

[Bosunsmate]

Yes lips go facing the oil to keep the oil in, thats your best bet with just one seal.
Dont worry to much about it. Just keep an eye on your oil every now and again and change it too. Lots of them ave a slow leak which is why i change mine once a year. At $5 to fill it with marine gearcase oil its no big splash out

 

[F_R]

Well ok if you want an explanation, you are correct, it does kind of a poor job at keeping the water out. The basic engineering thinking on the seal is that it is there to keep the oil in. If the case is full of oil, the water can't get in. Yes, a small amount of water can get in anyway, but that's why the owner's manual says to change the oil as a periodic maintenance item. Better than the real old motors where you had to re-lube it every time you used it. The back to back arrangement on modern motors is even better.