TM-9-1240-401-34-P
TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1993
TM-9-1240-401-34-P - Page 13 of 590
TM 9-1240-401-34&P
(5)
The deflection knob causes the M146 telescope mount to pivot about the yoke pins. Each revolution of the
deflection knob represents an 8-mil angular change in deflection. The deflection knob is an acme nut and screw arrangement
similar to the elevation knob. A correction dial, similar to that described in (4) is provided for the deflection mechanism. A
spring-loaded deflection ratchet automatically locks the controls at all even line increments on the deflection dial.
(6)
The cable assembly, which is held to the M146 telescope mount by means of external clips, supplies 24-volt dc
power from the vehicle supply to the M118A2/M118A3 elbow telescope through a standard quick-disconnect sealed
connector.
Change 1
1-3
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