Polaroid 636 Repair Manual page 56

17. Mount the Cone on a universal swivel fixture.
18. Remove Viewfinder Housing by tilting rear end upward (Fig. 17) and rotating it
forward (note position of the tab at its left front).
19. With tweezers, remove Opening Blade Spring from rack and Base Block (Fig. 18),
first noting which notch on the rack it's attached to and marking that notch to assure
correct reassembly later.
20. Remove Trim Slide by depressing the tang along its lower edge (Fig. 18).
Fig. 18 Removing Opening Blade Spring & Trim Slide
Fig. 17 Removing Viewfinder Housing
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