TM 5-6675-328-14
(f)
Carefully lift the OPC from the adapter tube.
(g)
Unscrew the eyepiece adapter from the OPC. (h) Matchmark the position and orientation of the axis ring
and loosen four socket head setscrews that secure the axis ring to the OPC and remove axis ring.
(i)
Screw the eyepiece adapter back on the OPC.
(j)
Unscrew the objective cap ring from the end of the OPC and remove the spacer tube.
NOTE
Do not remove spherical mount from OPC.
(k)
Place the OPC in V-blocks on target post and attach lighting unit.
(l)
Position AS-1 so that it is looking into the OPC.
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