I have a Super C that I completely restored several years ago. It only has a few hours on it since I only drive it in tractor shows and parades. At that time I put in a new pilot bearing and a rebuilt clutch. Anyway, I have been noticing a rattling when I push in the clutch and also get a vibration when I let the clutch out. Today I split the tractor to see what was going on since I could reach up in the bell housing and move the transmission shaft up and down. The pilot bearing is warn out on one side. There were some shavings from the bearing inside the clutch. I can't figure out what would cause that after such few hours. The end of the shaft that went into the pilot bearing had some rough spots on it, but couldn't see how that could cause so much wear. I polished the shaft, so that should be fixed. Then I thought maybe the shaft was rubbing on the end of the crankshaft internally. I measured the clearance and it appears that there is over 1/4" clearance from the transmission shaft end to the crankshaft bore. Just as a preventative measure I ground a little off the end of the transmission shaft.
Anyone have an idea why this might have happened? Thanks, Roger
Anyone have an idea why this might have happened? Thanks, Roger