Ikelite 6146.15 Instruction Manual page 19

Control Maintenance -
Slide the shaft back into the control gland and gently slide it back and
forth a few times without fully removing the shaft from the gland.
Replace the knob noting the flat area on the shaft. The set screw in the
knob should tighten down against the flat area on the control so the
knob does not turn on the shaft.
Diagram B
Control Shaft
Tighten set screw down
against this flat area
when replacing the knob.
Diagram C
Housing
continued
Housing
Lubricate end of shaft
before reinserting into
gland
Lubricate shaft
Gland
Loosen Set Screw
Pull out to
expose shaft
19