I ride an '86 FXRS-SP with a 1999 engine . The bike has about 127,000 miles. I recently had a the sprocket nut shear of the set screw that holds it in place. the pulley flopped around behing the inner primary but caused no damage other than wearing a groove in the back of the inner primary. I replace all the seals and put it back together. Next morning I had a tranny leak. i pulled it all apart,all seals still intact. When I filled the trans back up. I noticed fluid leaking around the main drive shaft and where the main drive fits over it. I can't find picture of the bearing in any manual. My question. Do I have to take the tranny apart to replace this bearing, and also, does this bearing also function as a seal to keep fluid from weaping out around the shaft. I haven't taken it apart yet, but I did notice that the very edge of the bearing seems to be cracked, its hard to tell since VERY little of the edge actually is visible.