Mercury 115 inline 6 bearing carrier seal issue

[Garythelost]

Hello, I have a mercury 115 6 cylinder 2 stroke 0B286140, with a bearing carrier 41528-C1. I am replacing the seals and have run into an issue. The inner seal, 8M0204670, fits fine, however the outer seal, 8M0205729, is too large and I can’t get it to fit. I see my bearing carrier has been superseded by 41529T2, but shouldn’t the inner seal be the same size as the outer seal? Do I just have the wrong part? This was an auction engine so I don’t know its history. Any help is appreciated.

 

[Chris1956]

Did you look on the crowleymarine web site? They should list the part number of the seals, and whether they are the same.

 

[racerone]

Is the gearcase an original ?---Or a replacement , possibly an older one ?

 

[Garythelost]

Thanks for the help, yes I used the crowleymarine website, and that’s how I determined what seals to buy and that my bearing carrier PN has been superseded. As far as I know, the gearcase is original, but I bought it from a guy who bought it on an auction, so who knows. Would it be wrong to buy a second inner seal and just put it in backwards? If all else fails I will take it to a shop.

 

[jimmbo]

Marine Engine dot com shows the same Part #s
The Seals are different, the Outer one supposedly has some means of fighting/resisting Fishing Lines.
You mentioned that the Bearing Carrier, has been superseded. Are you saying you have the Newer Carrier, or the older one?
If an older one, I wonder how old. Does the Carrier have a Friction Bearing or a Anti-friction Bearing at the Forward end of it?

 

[Garythelost]

With my bearing carrier I am not sure how old it is, crowleymarine does not have any record of 41528-C1 but I believe it was superseded by 41529A1. As for friction bearing or not, it has a roller bearing just behind the seals. Here is a diagram.

 

[racerone]

Many motors ran successfully with 1 seal.-----Many lower units run with 2 identical seals on the propshaft.----It is only the relentless search for companies to try and cut costs / " improve " that results in the consumer loosing.-----We end up with great looking products that are difficult / costly to repair.----So just install 2 identical seals.----Put some grease between them.

 

[jimmbo]

I wasn't asking about the little Roller Bearing. I was asking whether or not the other end of the Carrier had a Friction, or a Non-Friction Bearing. In the Early 80s Mercury changed from a Ball Bearing to a Bushing at that location. I thought it was a Possibility that you have a gearcase from an earlier engine, as in many cases, they would fit.

 

[Garythelost]

I wasn't asking about the little Roller Bearing. I was asking whether or not the other end of the Carrier had a Friction, or a Non-Friction Bearing. In the Early 80s Mercury changed from a Ball Bearing to a Bushing at that location. I thought it was a Possibility that you have a gearcase from an earlier engine, as in many cases, they would fit.

Sorry, it must be a bushing, I don’t have my bearing carrier on me but it looks like this.

 

[jimmbo]

Yes, that is the later design.