Sigma 400mm f/5.6 Safari Green for Canon - Assembly / Disassembly

[Lucato]

Hi folks, I have disassembled my lens starting from back, and a little metal piece jumped (like a "T" shape) and I have no idea where does it fit. :0) Does anybody know any link for assembling from back or does anybody know any link to a catalogue parts for this lens, scheme for this lens or also a dissasemble from back article or video? Any feedback I'll appreciate.

 

[tirediron]

Possibly some help here. I have to ask, WHY??????

 

[Dave442]

Hate it when that happens. Looks like a manual focus lens, is that an FD mount? I would buy another one and try again.

 

[beagle100]

I have to ask, WHY??????

yes, disassembling and repairing a lens looks complicated