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wish me luck......


OoPEZoO

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I'm heading down to the garage to replace the crown bearing in the rear end.

 

After 3 weeks of phone calls I finally got my parts from the Dealership that I ordered a month ago (velocity Cycles in Mechanicsberg, PA). It will be the last time I do business with them.

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ok! so how did it go?

 

did you remove the tire (exhaust also to remove the tire) then remove the bolts of the final drive on the tire side....when you open this up you see the seal and crown bearing...remove the seal (pretty much destroyed if you do so you have to replace with a new one) and then the crown bearing....i believe if you heat it, it comes off easy...I would do it this way as i dont' want to damage the surface that it rides on. Then you heat the new bearing up (to 220 degrees F roughly) and it should go on fairly easy. Once cool, put the new seal on (requires a special tool OR you could see if you could get a socket of the same diameter to put it on..i know a friend of mine who bought some PVC pipe of the same diameter to place this on)...put the new o-ring in the casing (lubed with lithium white grease) and tighten up all the bolts to spec, fill the drive with oil and you're good to go!

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I failed miserably.

 

I've had the bike apart for the past month. Like I said, I have been waiting for the parts. I didn't have to remove the exhaust to get the tire off though. I just unbolted it and gave it a good tug.

 

I tried everything I could to get the old bearing off.....all I ended up doing was screwing up the conical bearing on the other side. Now I have to order one of those also. The carrier that holds the balls in the crown bearing was completely destroyed. As soon as I put any pressure on it, the outer race popped off and the ball bearings went everywhere. I couldn't get anything on the edge that was left on the inner race. I tried heating it, but I still couldn't get anything on it to give me any leverage. The one attempt I ended up dropping the assembly (only about 3-4") and it landed on the conical bearing and bend the outer race.

 

I might just give up and see if I can get a dealership to install the two bearings. I hate to do it. I've never had to take any of my vehicles to a shop to have work done, but I don't know how I'm gonna to finish it myself without bitching anything up.

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I ended up doing was screwing up the conical bearing on the other side

 

At this point when working on Cameron's RT's final drive we cut the bearing race off using a dremel to weaken it, then a rap with a cold chisel to break it.

 

Assuming that you intend to replace both bearings now; you will need to measure and set the preload for the inner tapered-roller bearing. Actually you probably should do this even if only replacing the outer crown wheel bearing but it's tricky to do, requires tools most of us don't have, and doesn't get done. You know, the cross your fingers and hope it's OK approach.

 

A dealer may be your best choice.

 

Stan

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A dealer may be your best choice.

I had a independent specialist replace the output bearing on my old R11RT and the labour cost for the job was less then the parts. With that in mind I would rather entrust the job to an expert - particularly if resetting the preload on the bearings is necessary.

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you probably could just remove the whole final drive itself (i'm not sure you've done that already) and bring it to a dealer and have them rebuild it. Then you can just install it back onto the bike, though it sounds like you may have issues with the pivot bearing as well.

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I haven't quite given up yet. I have a full machine shop here at work with a nice compliment of presses and guys who deal with bearings all day long. I'm going to order the conical bearing, then bring it in and see if one of our local experts can remove the current bearings for me. I'm 100% positive I can install the new ones myself.

 

I really just don't feel comfortable with any of my local shops around here doing the work. Hell, it took them a month to get me the parts. My only other option is to take a field trip down to Bob's BMW in Baltimore. Either way, I can't do anything untill I get the new conical bearing

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