SPT - 1971

Specialized service notes issued by the Society of Photo-Technologists (SPT) for November-December 1971, covering pages 415 through 426. This technical workshop manual contains detailed disassembly and maintenance procedures for several professional and semi-professional cameras from that era. The Kodak Instamatic 174 section provides comprehensive step-by-step disassembly instructions with guidance on accessing internal components and handling delicate mechanisms safely. The Argus C-3 coverage emphasizes shutter disassembly with particular attention to gear alignment and speed escapement mechanisms. For the Petri Color 35, shutter access procedures detail the removal of retaining rings and protective covers. Repair procedures address jammed shutter and transport mechanisms on the Kodak Instamatic 314 and 414 models, with reassembly guidance for the M4 movie camera variant. The Exakta 500 section covers top cover and mechanism removal, while the Mamiya/Sekor Super Deluxe f1.7 section focuses on shutter accessibility techniques. Each section contains precise sequential instructions and essential cautions for service technicians and experienced repairpersons performing field and workshop repairs.