Polaroid 636 Repair Manual page 69

48. Release the tension on the Counter and Pawl Springs (see insets A and B, Fig. 40).
49. Release the Drive Cover forward detent (inset C), the hanger detent (inset D) and
the rear detent (inset E).
NOTE: In step 49, the metal gear (#5) may become dislodged. Be careful that it is not lost.
Fig. 40 Releasing springs and Gear Drive Cover detents
63