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718 HANDBOOK OF PROJECTION FOR
which holds the lever into place, being certain that setscrew S-223-G, P.2, engages with countersink in shank of stud. Screw set-screw down tight. Place coil spring on stud with the hook upward and toward the lever. Engage the hook with lever. Put washer and sere on end of stud but do not tighten sere down. Leave it quite slack.
In the end of the stud you will have noted a groove. This is to hold the spring when under tension. With the screw slack enough so you can do it, grasp the end of the spring which hangs downward and force it around to the right (clockwise) until it has made approximately one full revolution and points straight downward, whereupon snap it into the groove in end of stud. Hold the spring in this position and tighten the screw in end of stud down solid.
INSTRUCTION NO. 18.— REMOVING SHUTTER ADJUSTING KNOB AND SHAFT K-120-A, P.2— Remove screw and washer which hold lower sprocket idler bracket to its shaft, or stud. Raise bracket away from sprocket and pull it off. Next loosen nuts which are locked together on threaded portion of shaft and, holding the nuts stationary, turn knob K-120-A, P.2, counter clockwise until it releases from sliding block and lock nuts. You may then putt it out.
NOTE. — On the older types of Simplex the removal of a single screw will permit of the entire arm being removed.
INSTRUCTION NO. 19.— TO REMOVE FRAMING CAM.—
This is the part the framing lever link, L-114-G, P.2, connects to. It is numbered A-7, P.l. To remove it, first follow Instruction No. 2. Next remove screw S-222-G, P. 3, which connects upper end of link to cam. Take out screws holding back mechanism casing cover, C-151-D, P.6, and remove same. With thumb of left hand shove framing slide lever, L-104-G, P.3, forward (toward screen) as far as it will go and insert a piece of wood about one inch thick between sliding gear, which is under large gear on main shutter shaft, and its bracket, to hold the gear and lever forward where you shoved them. A smaller piece between the lever and its stop will serve as well. The idea is to hold the lever where you shoved it, which relieves pressure of framing slide lever spring, acting through tension block, from edge of cam we are to remove.
Next, using a long, slender-bladed screw-driver, loosen setscrew in framing cam adjusting ring, R-133-A, P.l. This screw locks together the ends of the ring where they are cut. Its loosening unlocks the ring, which may be unscrewed and the framing cam worked slowly around until it is free, when it may be pulled out to the left.