I don't know if anyone will remember, but I made a post a little while ago about my drive chain suddenly rubbing the inner primary case. I guessed that the gearbox had shifted in the cradle just enough to make the chain come into contact with the cover. Well, I guessed wrong...
I took the outer primary cover off and pieces of chewed up metal and chunks of felt seal came out with the ATF, not what I was expecting. A quick look over everything showed no damaged to the inner primary workings. Once everything was gutted and I took the inner cover off, here's what I found.
The screw that threads into the sprocket and holds the lock washer on had come out. The washer came off, the nut unscrewed and the sprocket was just floating on the shaft. I assumed the splines and threads had been damaged on the shaft, but luckly, everything went right back together. The new sprocket I had came with a new allen head screw. I tried the new screw in the old sprocket and both holes were loose on the screw.
I'm sure if I had ridden it like this, there would have been damage, but I don't think there would have been any catastrophic damage. I don't think the sprocket could have come off the shaft. The drive chain is relatively new and doesn't have the sideways flex like a worn out chain does. Even if the sprocket came off the shaft, the motor would have spun but nothing would've been tranferred to the wheel. I put the new sprocket on, this time using loctite on the sprocket screw, and I really buried it. Three of the clutch plates were really (!) stuck. I cleaned them all and put everything back together. On the first test ride, it went into first gear so quietly and easily that I wasn't sure if it even went it. It has never shifted to easily. It's definitely running and functioning the best is has since I've owned it. Went for a 60 mile ride Monday morning, and it was soo nice.
So, everything came out ok. I intentionally got a 20 tooth sprocket to try out, assuming that I currently had a 19 tooth. Wrong again. The existing sprocket was a 20 tooth already. Oh well, at least the sprocket is new...
Ben
I took the outer primary cover off and pieces of chewed up metal and chunks of felt seal came out with the ATF, not what I was expecting. A quick look over everything showed no damaged to the inner primary workings. Once everything was gutted and I took the inner cover off, here's what I found.
The screw that threads into the sprocket and holds the lock washer on had come out. The washer came off, the nut unscrewed and the sprocket was just floating on the shaft. I assumed the splines and threads had been damaged on the shaft, but luckly, everything went right back together. The new sprocket I had came with a new allen head screw. I tried the new screw in the old sprocket and both holes were loose on the screw.
I'm sure if I had ridden it like this, there would have been damage, but I don't think there would have been any catastrophic damage. I don't think the sprocket could have come off the shaft. The drive chain is relatively new and doesn't have the sideways flex like a worn out chain does. Even if the sprocket came off the shaft, the motor would have spun but nothing would've been tranferred to the wheel. I put the new sprocket on, this time using loctite on the sprocket screw, and I really buried it. Three of the clutch plates were really (!) stuck. I cleaned them all and put everything back together. On the first test ride, it went into first gear so quietly and easily that I wasn't sure if it even went it. It has never shifted to easily. It's definitely running and functioning the best is has since I've owned it. Went for a 60 mile ride Monday morning, and it was soo nice.
So, everything came out ok. I intentionally got a 20 tooth sprocket to try out, assuming that I currently had a 19 tooth. Wrong again. The existing sprocket was a 20 tooth already. Oh well, at least the sprocket is new...
Ben