While supporting the LNC with
your hand, install the screw on the left-hand side that secures the LNC to the
housing, and tighten it enough to support the LNC temporarily while you
reinstall the circulator.
Carefully place the circulator
behind the LNC mounting plate, and install the two bottom screws securing it and
the LNC to the antenna rotary joint.
Reconnect the LNC coaxial cable and the LNC data cable to the LNC.