I am replacing the plastic lower rotor head and replacing it with a alum set. I thought by lossening the set screws the shaft would simply pull out.
Can someone direct me to a easy to follow document or give me some advice ??

It would be greatly appreciated !!!!

You have to take the inner shaft out. Then you have to pull the upper bearing cup on the outer shaft off. Then I just take the screws out of the lower rotor head. And pull it off.

Thanks ! Any good links out there that explains it in details with Pics ??

Honestly it's really easy, you shouldn't need pics. Just follow the directions in the above post and it'll come off. Make sure and take all 4 screws completely out so you know one isn't slightly grabbing. If your outer shaft is bent, you might have to tug a little but it will still come off.
Good luck!

I must be doing somethng wrong. I tug on the inner shaft and it feels like it is attached to a spring ??
What post were you refering to ???? Thanks for your assistance. Ireally appreciate it.

Sorry I skipped a step. The lower gear is held on by two screws and a silver colar. Take the screws out then you can pull the bottom gear off. Then the inner shaft comes out.

I might add that when you read the back of the package of the new rotor head carefully. Up to and including the loctite. You MAY need to get some 400 grit sandpaper and smooth down the old screw bites so you can slide the new parts down the shaft. You can mark a little circle around the top of the shaft with a Sharpie indicating the top of the old collar and a verticle hash mark to indicate where the old screw holes are. Good luck!

Rikyob

check this out
http://www.dacaur.com/heli/bcxhelp/BladeCXAssembly.pdf

Hope I'm not post too late, but here is a perfect video for you.

Installing Aluminum Parts
http://www.youtube.com/watch?v=7W3waOA9ANc

No not to late. I am going to finish it tonight. Irealized late last night that you must remove screws on the underbelly.

Thank you and DBATMAn and Evdreamer for helping me out on this. Just getting into this hobby and really LOVE IT !!!!!

Thanks again to all.