^^^ Push in, pull out.
(Though mine doesn't have a VSS)
It's easier if the gear drive is still in the transfer case, as you don't need another pair of hands to hold that in place, but it is still possible to get.
I'm sure a bench vice would help.
Jim,
Lil'Red is a '87 F250 HD, 4.10's, 1356 4x4, Zf-5, 3G, PMGR, Saginaw PS, desmogged with a Holley 80508 and Performer intake.
Too much other stuff to mention.