Brake Master rebuild

["Jason Spaeth" <jasonspaeth@hotmail.com>]

Hi MGers,  I am attempting to install a rebuild kit to my early 74 B.  I am 
having trouble removing the piston.  It is free and moves back and forth 
inside the cyclinder but will not come out of the cyclinder.  What holds it 
in and how do I remove it?  A pin or somthing?  The white poly bushing is 
still in place.

My repair manual shows an older style master cyclinder and the moss picture 
is not very clear.  Any help would be appreciated.  Thanks

Jason Spaeth
Ice Cold, Minnesota