Can't Get It Up!!

[daddiojiggy]

my rear window that is(w 140)!
took off panel(right rear) and wasn't sure if it was motor , regulator or plastic piece.i took the motor off the regulator and it worked most of the time-there were times when i would push the button and it wouldn't move.if i turned the key off and tapped the motor and then pressed the switch it would seem to work in either direction but would stop SOMETIMES if i hit the express-up button. i should add that all this happens when i have the motor OFF the regulator.when i inserted the gear into the regulator it wouldn't budge.
with the motor out i cannot raise the window.does any of this make sense to someone?if my regulator is the problem, how do i check it? is there someway that i can raise the window until i get the neccesary parts?