RE: msr frame
Ya you pretty much have to take it all apart. Most everything screws on.
The motor may be held in with some sort of silicone.
I was at the Gym this past winter and had to change out the frame.
I did not glue the motor in.
On my sons MSR The motor was not glued in.
The Shaft will be the hardest part to get back together.
You may want to take pictures for reference of where everything goes.
Good Luck
Jim