TAMRON - Tamron M42 AdaptMaticMount
Comprehensive repair guide addressing the correction of defective aperture control mechanisms on Tamron M42 Adapt-a-Matic mounts. This technical documentation focuses specifically on « For Pentax II » mounts and P-CS models manufactured between 1969 and 1973. Wade Spradley methodically documents issues resulting from misaligned actuating pins and improperly positioned lever arms that completely disable the automatic aperture functioning system. The guide provides detailed comparative analysis between defective original mounts and corrected versions, supported by extensive photography showing deterioration marks (galling), lever arm misalignment, and incorrect component positioning. Each section illustrates distinctions between the robust P-CS model featuring its larger flat pin base and the later revised version with smaller pin diameter. Realignment procedures for contact arms and internal roller mechanisms are thoroughly detailed to enable restoration of mounts damaged by improper installation. The documentation covers the structural differences in mount construction, spring assemblies, and roller bearing contact points. Essential resource for vintage optics collectors and restoration specialists working with Adapt-a-Matic lens mount systems.
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Document Details
- Format
- Pages
- 6
- Size
- 4.8 MB
- Category
- Photography