My How to Keep your Subaru Alive book says that the outer CV joint and Axle shaft are inseparable - but I know they're not as I have replaced one a few years ago. I couldn't find any advice on how to pull them apart so I thought I'd share how I did it. Not many photos sorry. It's kind of an afterthought. 
  
Feel free to add further advice -  I might learn something about an easier way to do it next time. 
  
Also,  I'm not a mechanic so my terminology might be a bit off. 
  
The CV joint is bas