Remove the handle, interior light wiring and door card. Try not to turn the handle mechanism so that it will still line up correctly when reassembling.
Remove the 4 bolts, spring washers and flat washers holding the mechanism to the door.
Push the mechanism into the door and push the assembly to the rear of the door and disengage the white roller "A" from the rear of the channel attached to the inner door.
Push the assembly to the front of the door disengaging the rear black roller "B" from the front of the rear channel attached at the bottom of the glass then the front black roller "C" from the front of the front channel.
Close the moving arm of the assembly so that moving arm and main assembly are lined up to ease removal from the door.
Remove the assembly from the lower door aperture by tilting the top of the handle end (the bit with teeth) away from you and remove from the door, bottom of the handle end first.