Ikelite D90 - Manual (Page 13)

TOP OF HOUSING
Installing the Zoom Clamp & Gear Sleeve On Type 2 Lenses
Due to the larger diameter lens opening on Type 2 lenses, the Zoom
Clamp and Gear Sleeve need to be installed from the rear (bayonet end)
of the lens. Use the housing Lens Release Control and remove the
camera lens from the camera body, after the camera and lens have
been installed in the housing.
Place the Gear Sleeve in the housing opening as shown.
Install the black Zoom Clamp on the Lens Zoom Ring and lower the lens
into the housing opening. Make sure the Zoom Clamp grooved tabs
align with the Gear Sleeve ribs. If necessary, install rubber strips to
expand the Zoom Clamp so it meshes properly with the Gear Sleeve.
Bayonet lens into camera body and align Gear Sleeve teeth with Black
Housing Gear Teeth.
Zoom Clamp
Type 2 lens
Lens Zoom Ring
Align
Zoom Clamp
grooved
tabs with
Gear Sleeve
Ribs
13
Gear Sleeve
Lens Manual
Focus Ring