| Author | Message | ||
     Psyclown |
AmericanSportbike has a shift shaft seal and a final drive seal. Which one is which? | ||
| Fahren |
Shift shaft seal goes through the cover, around the shifter shaft. That would be for oil leaking out of the primary. Not a bad idea to have a spare one when you open up, though, as they are relatively easy to muck up when you open things up. | ||
| Hootowl |
If you're ordering parts anyway, might as well pick one up. It's a good idea to wrap the splines of the shift shaft with electrical tape in order to avoid tearing the shaft seal while reinstalling the cover. | ||
| Psyclown |
I guess my question is what seals will i need when pulling my primary cover and fixing the leak? Im going to replace the primary tensioner while in there. | ||
| Fahren |
How do you know the inner oil seal is leaking oil into the primary? You may not need to change it, until you are sure. Some put a baggie around the shift shaft to protect that seal; electrical tape would work well, too. New primary gasket. Dab of RTV silicone up where the wire from the stator exits through a grommet out into the air (if you are, in fact, going that far in). The gaskets and seals are cheap insurance to have at the ready. | ||
| Hootowl |
The only one you need to replace is the paper primary gasket. The new ones are metal, and can be reused. And they're a whole heck of a lot easier to install. No more monkeying around with dowels to get things lined up. However, the shift shaft seal is fairly easy to nick, so I would pick up another one of those, but it is not strictly necessary. Sure is cheap insurance though. | ||
| Jim2 |
If your in there it's a great time to check the torque on your starter bolts and if there is any leak around the starter replace that gasket. I put a thin layer of Hylomar around the new primary gasket. This helps hold it on while you put it all together and allows it to be reused about three or four times(maybe more). To answer your original question the seal you need to replace for oil leaking into the primary is called the "Main Shaft Seal". I can't say if that is the same as the American Sport Bike "Final Drive Seal" you mention. | ||
| Essmjay |
I install the shift shaft seal last. I wrap the splines with teflon tape and use a socket that fits over the shaft and inside the recess to tap the seal into place. That makes it a lot easier to put the cover on. I also use a piece of cardboard and draw a picture of the cover on it in small scale and put the bolts in the correct position as I remove them, since they are different lengths, and that saves me having to figure it out when I reassemble the cover. Wouldn't the final drive seal be the outboard transmission seal? that one would be leaking out by your front belt sprocket. | ||
| Bluzm2 |
I'm with Fahren, use the corner of a baggie to protect the seal from the splines. Electrical tape is usually too thick to get through the cover bushing unless you stretch it when applying. The corner of a cheap baggie works perfectly. A little dab of oil makes it all slide nicely. |
