(Posted as a request) . If anyone can take this a step further and elaborate on the rear elements I'd be grateful!
Also note: I am using made-up names for some of the parts (front element assembly?) Any corrections will be appended to the text of the post.
Step 1: focus the lens at 4 meters (< 14 feet).
Step 2: grip the lens by the aperture ring (
or mount, or anything attached to the mount, ie: a camera) and the front protective cover and twist the front protective cover clockwise until it falls down and hangs loosely.
Step 3: grip the focus ring and the front element assembly and twist the front element assembly counter-clockwise until it disengages.
Step 4: remove the lens hood from the front protective cover and set aside.
Step 5: attach the front element assembly securely to the lens by turning it clockwise
Step 6: attach the front protective cover to the front element assembly by pressing it up and turning it counterclockwise.
(I could swear I took a picture of this...) Step 7: continue turning the front protective cover counterclockwise until the front half of the lens disengages from the back half and set the back half aside.
Step 8: remove the front element assembly from the front protective cover by turning counter clockwise.
Step 9: twist the front element assembly apart by rotating the front element counter clockwise.
In this state of disassembly you can clean most of the lens surfaces and the aperture blades.
I think that's it for the easy stuff. Pretty sure the rest requires unscrewing tiny little screws on the mount but I haven't gone that far yet.