I have explored this option, and no you cant.
There is the plastic spring housing, once i pulled the bolt i assumed it would all drop out but the spring housing is located in the handle by the
blade stop pin, it just wont budge.
I am dissapointed,the only reason i wanted to get into it was to lube and shim it on the serrated side as it has play which you cant cancel
by tightening the bolt, just slows down the blades!
I slipped in a shim but its not thin enough, i had .015mm but it calls for .010mm.
Good thing the main blade locks up tight otherwise i would be really annoyed you cant pull it apart.
My satin powerassist is almost too shiny to use, so i just tote it around the house!!
My Wave is the beater for work.
I think the Power Assist is an innovation although i would have done a few thing different regarding its design.
Bring on a PPP version (mini PA!!)