Question about 1993 Harley Davidson FLSTF Fat boy
Ok, this is a lot better. I used to tell people that I couldn't fix a motorcycle over the phone and here I am trying to do it on a computer. My how times have changed.
Now, the seal that you're talking about is the engine sprocket shaft seal. I may not have been in backwards since I don't know what way it was in the case. If you look at a seal, the lip is pointed in one direction. The seal should be installed with the lip pointed AGAINST the oil flow, in this case towards the inside of the engine.
Another thing that most people make a mistake one when installing a new seal is that they put it up dry. By dry, I mean that they do not lubricate the lip of the seal, not the outside diameter. The reason, when the engine starts up, it goes to 1000-1500 RPM almost instantly. The result is friction burns the lip of the new seal up before oil has a chance to get to it.
Next, the spacer that goes onto the sprocket shaft should have had a larger diameter on one end of it. This larger diameter goes on the backside of the seal against the bearing in the case. This helps keep the oil away from the seal. Also, it helps to put a bead of RTV around the sprocket shaft where it comes out of the spacer. This prevents oil that might run down between the shaft and the seal from leaking out.
This is the best that I can tell you without actually seeing your setup. Someone may have changed the spacer with one that came with the belt drive kit and it's allowing the oil to leak. If you would like an "exploded" view of how your bottom end is assembled, send me an e-mail at wd4ity @ bellsouth.net. I'll scan the picture in a service manual and send it to you.
Posted on Apr 27, 2010
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Posted on Jan 02, 2017
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