your girl looks amazing...as for taking it apart...I wouldn't..she is not in that kind of shape..
here is a thread I posted on my 2 new vintage machines I got this week...
http://www.quiltingboard.com/t-148340-4.htm
this should take you to page 4 were another member "Muv" posted a youtube video she made showing how to clean them when they are in pretty decent shape like yours..it is great info...
if you need links to other sites for vintage info, let me know..I have found quite a few this week.