Richardson's handbook of projection (1927)

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714 HANDBOOK OF PROJECTION FOR and B-8, P.4, proceed as follows : First follow instructions No. 2 and 5. In the hub of the casing cover you will find a hole made to receive the pin of the Simplex spanner wrench. By holding the casing stationary and using this wrench you may unscrew the cover, which has an ordinary right-hand thread. NOTE. — It will be necessary to tap the wrench gently with a small hammer in order to start the part, but remember when doing this that you are working with finely finished parts, made with extreme accuracy, therefor use a little common sense and do not abuse them. INSTRUCTION NO. 8— REMOVING CAM OF INTERMITTENT MOVEMENT, B-16, P.5.— First follow instructions Nos. 1, 2 and 7. Next remove collar on end of shaft carrying the cam, whereupon you may pull the cam out, together with its shaft and gear. INSTRUCTION NO. 9— TO REMOVE FLYWHEEL SHAFT, S-454-B, P.3.— First follow instructions Nos. 7 and 8, then loosen setscrew in hub of flywheel. Next pull flywheel off the shaft, which will carry with it gear G-148-B, P.4 and a small locking shoe. WARNING: Be careful lest you lose the locking shoe, as it is quite small. This will release the flywheel shaft, which may be pulled out at opposite end of bearing. INSTRUCTION NO. 10— REMOVING COMPLETE FIRE SHUTTER GOVERNOR UNIT,-The fire shutter governor, D3, P.3, the vertical shaft on which it is mounted, and the gears on the shaft are for all practical purposes one unit. To remove any one of the parts it is necessary to do considerable in the way of preparation. First take off the upper magazine and remove screws which hold top plate of mechanism casing. Next loosen set-screw S-125-A, P.2, and lift off focusing knob K-119-A, P.2. Remove left door link screw and lift off top plate of mechanism casing. Next follow Instruction No. 2, and then, using a small steel punch, being sure to drive from the small end of the pin, drive out taper pin (it will be a set-screw if you have an old model mechanism) in hub of gear G-120-G, P.4, which in the first gear below the governor weights. Next drive pin out of hub in next gear below. Remove center set screw from upper link holder H-121-G, P. 3, which will be a taper pin instead of a set-screw if your projector be an old model. If you have followed these instructions correctly you have now released all parts mounted on vertical shaft, below its upper link holder H-121-G, which will be held by a taper pin. Should the shaft stick, line the jaws of a plier with