Richardson's handbook of projection (1927)

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728 HANDBOOK OF PROJECTION FOR In Replacing old intermittent parts after disassembly, or in installing new parts, be sure they are perfectly clean. If they seem to fit too tightly, have patience. These parts are supposed to and must fit snugly. Never Force a tight fitting intermittent movement part into place. If you do you probably will ruin the whole thing. If necessary, grind it down, using tripoli or rotten stone mixed with oil for the purpose. Never Use Emory. After grinding, wash the parts thoroughly with Plate 7, Figure 264. kerosene or gasoline, and then lubricate with clean oil before inserting. In Assembling an Intermittent Movement be sure the flywheel or cam shaft fits its bearing without lost motion. If there is lost motion, then send part to service station for attention. If shaft is too tight, grind it in with rotten stone, as before directed. Clean thoroughly with kerosene or gasoline, lubricate and place shaft in position, attaching flywheel to shaft and placing collar on end of cam shaft.