Join Date: Jun 2014
Location: Northern Michigan
Cush Drive bearing problem, wheel seperating
I have an 04 ZX6R with 15,000 miles on it, I bought it with 14,000 miles on it and rode it for a bit and the chain was getting bad so I put a new x-ring chain and both sprockets on it. I adjusted the chain per the specs and after a short ride it got really tight. I re-adjusted it back to spec and was good for a couple hundred miles until the cush drive bearing blew apart and the cush drive slid out of the wheel and the sprocket bolts rubbed on the swingarm. This happened a few miles from home and nursed it back to the garage. The chain was super loose at this time. I ordered an all-balls bearing kit and installed them tonight, put everything together and adjusted chain correctly. Well after another short ride, the chain got really tight again so I headed back home. The bearing went out again and the cush drive came out of the wheel even further and rubbed a good groove into the swing arm.
What could be causing this? I had the rear tire aligned correctly. It is getting very frustrating and expensive and have a feeling it is going to happen again after replacing the bearing again.