Check for pitting and corrosion. You may use a light buffing compound for polishing. 5. Lubricate with 4-Tec Dry Moly or graphite only. Warped shutters should be replaced. Try not to disassemble the shutter stack.
Most shutters can slip into the stack when the other is removed.
If they move too easily check for adjustment screws or missing spacer plates in the shutter stack. Attach missing shutter handles with pop rivets. Hardware Remove C-clamps and check all the bolts. If they are bent or stripped replace them. Check the yoke handles and bolts.