John Deere 301A Reverser issue

[ucsport08]

If sump screen is coated with debris they can be a pita to remove. I would recommend getting screen out and cleaned/inspected before continuing any other hyd diagnostics. Is pin(parts key 5) not in trans case?

I tried looking in after I removed the metal sleeve and I could not see anything else as it was deep in there and too dark. I'll do my best to try and remove sump screen bolt. I'll have to bust out my air impact and see if I can have better luck with that. Thanks!