Ikelite SLR-DC Instruction Manual page 15

Installing the Zoom Clamp & Gear Sleeve On the Type 1 Lenses
The Zoom Clamp has springs so it can be expanded to fit over the
Zoom Ring of the lens - figure C, page 15.
Install the Zoom Clamp with the extension tabs toward the rear element
of the lens. After installing the Zoom Clamp and Gear Sleeve - figures D
& E, page 16, install the Lens Port and rotate the Zoom Ring on the
lens. If the Zoom Ring and Gear Sleeve do not mesh properly, install the
rubber strips (supplied) to the inside diameter of the Zoom Clamp as
shown in figure F, page 16.
Two thicknesses of rubber strips are provided. Start by installing the
thinnest rubber strips. If the Zoom Clamp still is not tight enough and
meshes improperly with the Gear Sleeve, use the thicker rubber strips.
Reinstall the Zoom Clamp, Sleeve. Mesh Gear Sleeve teeth with Black
Housing Drive Gear, figure G, page 18, and then install the Lens Port.
After installing the port, pages 19 & 20, rotate the housing Zoom Control
Knob to see that the Gear Sleeve is properly rotating the lens Zoom ring.
Type 1 lens
mounted
to camera
zoom
ring
Figure C
15