STUMPED 1965 6hp johnson crank seal

[Jmmass3264]

Hello everyone. I could really use some advice. I went tackle my leaking upper crank seal and after splitting the case, it revealed that there isnt really a seal like i have seen before. Its just a washer looking piece that sits around the crank. I don’t understand how it could seal anything? I have changed seals before but this is different. So not really sure how to go about fixing this issue . Any help would be appreciated

 

[boobie]

Got a model # ??

 

[oldboat1]

An oil slinger on your '65 likely predates seals in later models. The slinger around the shaft serves the purpose of a top seal by "slinging" oil back down the shaft. Slingers or seals come up off the shaft using a pick or seal puller, without any further disassembly. If you aren't leaking oil up at the top, you are usually good to go.

If there is leakage, I don't think there is any reason not to replace a slinger with a standard seal used on later models.

Best to ask questions before making assumptions about procedures. Get advice about reassembling the case.

 

[racerone]

Those slingers work just fine and never wear out.----Any oil is simply drawn back into the intake.-----Why did you take this motor apart ?

 

[F_R]

There is nothing wrong with the slinger system. It was used on a bajillion motors from 3 to 12hp. Any oil that escapes the bearing is thrown off by the slinger. Then it is sucked back down to the intake manifold through passages in the crankcase casting. Is it 1000% effective? Naw, you might have to give it a tune-up / clean-up every three or four years, depending on use.

 

[Jmmass3264]

Thanks for the part name and info. Took the motor apart because that is where the oil was leaking from. Also, there is no way to change out, or get to the oil slinger in this motor without splitting the case. There is a circle cover type of piece that The slinger sits in. And that piece has a channel that it is housed it. Kind of hard to explain without a picture. (cant seem to upload one for some reason). But anyway, that is why i had to take it apart

 

[racerone]

Nothing wrong with the set-up.----But you could bore the block to fit the seal used in 67 and newer models.----Have a number of blocks apart and I do not see a problem with the slinger !