The disassembly of this lens from the front is a puzzle relative to the few other FD lenses I have partly disassembled. I want to clean the glass and take out the oily aperture mechanism for cleaning.
I removed the name plate using 99% isopropyl alcohol and a homemade grip tool. Then there are the 4 small screws holding the filter ring. At that point my lens looks like the image you show.
I have searched online and come up with nothing except this page. This lens is more complex because it has 2 helicoids. Were you able to figure out what to do to get access to the inside glass?
