IH 444 transmission top cover removal

[GUSENM]

Hi, I'm having a problem removing the transmission top cover on my IH 444 1976. I've tried removing the lift housing as described in the workshop manual but i cant get it off. I've losened all cover bolts (11 pcs I think) and removed the suction filter. Anyone have a suggetion to what I'm doing wrong? I can upload som pics if that is to any help. Regards Gustav