ARRIFLEX - Arriflex 16St Service tutorial

This comprehensive technical guide details the complete overhaul and maintenance procedure for the Arriflex 16St camera, the benchmark instrument for 16mm cinematography since 1952. The document presents the camera's historical significance and major film applications, followed by detailed service instructions. The guide begins with an exhaustive list of tools and equipment required for servicing this precision mechanism, including specialized screwdriver types, flange focal depth measuring instruments, and recommended cleaning agents. A dedicated section on proprietary Arri lubricants (Isoflex LDS 18/05, Molykote G-n, Chronosynth 1/8) guides technicians through proper application methods. The detailed service procedure covers progressive disassembly: removal of the drive and buckle switch module, extraction of the platine, cleaning and lubrication of sprocket drive gears and counters, inspection of sprocket rollers and drive belts. The document illustrates motor cavity disassembly, electrical contact cleaning, and inspection of the motor drive socket connection. Special emphasis is given to the lens turret, verification of axial play-free rotation, and retention springs. The document subsequently details the critical process of removing and servicing the movement-mirror assembly, including the pulldown mechanism, ground glass and viewfinder prism system. Specialized procedures cover pulldown claw and registration pin alignment verification using steel film gauges, and precise focal flange depth adjustment using calibrated depth gauges. Detailed photographs accompanying each procedure demonstrate cleaning techniques, lubrication points, spring elements, and delicate assemblies. The guide concludes with final verification procedures: fresh film run-through for scratch detection and smooth transport, basic function testing, electrical current draw measurement, and magazine take-up tension verification.