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574 MOTION PICTURE HANDBOOK
No. 19.— To Remove the Yoke Holder, 378, P. 4, take out screws 500, P. 4, and pull the casting off. In replacing this yoke be sure that the bearing surfaces are perfectly clean.
No. 20.— To Remove Yoke 467, P. 4, follow Instruction No. 20 and take out screw 503, P. 4.
No. 21. — To Remove the Casting, 386, P. 4, carrying the revolving shutter shaft, vertical shaft 468 and horizontal shaft 386-2, P. 4, first follow Instruction No. 20*and then remove screws (two of them) 528, P. 4. This releases the casting carrying the three shafts named, and the five gears mounted thereon.
Caution: In replacing this casting be sure that you get the washers just as they were, because there is likely to be a variation in the thickness of the two washers and if you get them switched you will have trouble with the gears binding.
The number of the casting with its assembled parts is A-P-10, including the three shafts named, and gears 475 (three of them), gear 474, and sliding gear 472, all on P. 4.
/ would not advise the operator, to attempt to replace any of these parts. If it becomes necessary to do anything to them, take the whole part off and send it to the factory by insured parcel post.
No. 22. — To Remove Front Plate Cover, 529, P. 4, first follow Instructions Nos. 19 and 21. Then take out seven small flat head screws on face of the cover, which releases the whole thing.
No. 23.— To Remove Crank Shaft, 385, P. 5, drive taper pin out of part 418, P. 5, follow Instruction No. 22, and then drive out the taper pin in fhe collar next the left side of the mechanism casting .and the taper pin in .the hub of gear S-A 417, P. 5. This releases the shaft, which may be pulled out to the right as you face the lens end of the machine.
No. 24. — To Remove Transmission Spindle, 377, P. 5, fol low Instruction No. 23. Drive the taper pin out of gear 421 and 422, P. 5. Drive the taper pin out of the hub of gear 423, P. 4, which releases the shaft, and allows it to be driven out to the right as you face the lens end of the machine.
No. 25.— To Remove the Governor Lever, A-P 13, P. 2, it is only necessary to lower the framing carriage, stick a screwdriver from the right hand side and remove screw 511, P. 5.
No. 26.— To Remove Plate Covering the Top of the Ma