how to remove athaern sd45t-2 shell

I just received a loco from a out of state shop and the rear truck clip is off the instructions dont tell how to dissembable it. I could just send it back but if it’s not a big deal to fix i just as soon go this way. any help would be appreciated thanks!

I dont own one, but turn it upside down and see if there are any tabs comming from the shell. If not, remove the couplers and the shell should wiggle off.

David B