I bought an engine a few months ago and finally started tearing it down last night. I bought it knowing that the rear rotor bearing had frozen and you could see the blueing on the e-shaft. After I removed the rear plate and housing, I went to pull the rotor off the shaft, but it is stuck. I think that the bearing itself is frozen to the shaft. Does anyone have any ideas of how to get the rotor off?

 

Torch the bitch..

 

I thought of using heat but I only have a small butane torch.

Since there is a little bit of play and I can lift up the rotor about 3/4 of an inch, I may put some thin wood between the rotor and the middle plate and hit the e-shaft with a hammer since I'm going to need a new one anyway.

 

bearing is siezed, you now have a nice sculpture. only way to get it apart is to push the bearing off the rotor

 

More explanation?

The front rotor and the e-shaft will have to be replaced, but I want to try to save the plates and front rotor of the engine. I just need to get the seized bearing/rotor off the e-shaft.

 

What you said before, With plywood is fine. Why not use wood to pry between the rotor and the middle iron? Or put wood on the iron's face and use a crow bar, if you don't care.

There's lots of ways, just pick a good one.

 

No matter what I did, the rotor wouldn't come off the shaft. I ended up just carefully lifting off the bottom housing and taking the rest of the engine apart that way. Even after I got the e-shaft out and beat on the rotor with a hammer, it wouldn't come off. Oh well.

What concerns me is that the e-shaft was blued on the areas that sat inside of the rotors. Both of them were blued pretty substantially. Would this indicate some sort of oil problem? I just want to know so that I can pay special attention to whatever caused the engine to go in the first place so it doesn't happen again. If need be, I can post up some pics tonight.

 

generally an oil failure. I built a motor for a kid who when he received the motor striped out one of the blots to the oil strainer. Instead of taping it out and fixing the issue he left the strainer to install with only one bolt and RTV. It sucked air and froze the Eshaft to the front bearing. Needless to say I was taping the old bolt hole and reassembling the motor again a few short days latter.

The bearings press in and press out. If you want it apart yes suspend the rotor over something firm and beat or press on the shaft slowly forcing the rotor out.