Sony SAL135F18Z Service Manual page 23

3. Rotate counterclockwise the iris control lever of iris block inside the lens with tweezers so that the opening of iris becomes minimam.
Iris Control Lever
4. While inserting the groove at the tip of function lever in the iris control lever of iris block of iris inside the lens, install the function
lever to the preset ring and fix it tentatively in the center of oblong hole with two screws. (Use the special driver: J-6082-654-A)
Note:
After installing the function lever, confirm that the iris opens and closes when the lever of preset ring is turned.
5. Adjust the aperture diameter. (Refer to 4-2.)
6. After adjust the aperture diameter, apply the adhesive bond (B-10) to the tip of screws.
Screws
Oblong holes
SAL135F18Z (Sonnar 1.8/135 ZA) (Sonnar T
Iris becomes minimam
Rear Ring Assy
Function Lever
Iris Control Lever
135mm F1.8 ZA)
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HELP