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 123 of 590
TM 9-1240-401-34&P
MALFUNCTION
TEST OR INSPECTION
LOCATION
CORRECTIVE ACTION
3. ELEVATION HANDWHEEL (1) REQUIRES TORQUE
IN EXCESS OF 11 POUND-INCHES (1.24 N-M) TO
ROTATE.
Check for worn wormshaft and/or bearings.
Notify
depot maintenance.
CROSS-LEVEL MECHANISM
4. CROSS-LEVEL MECHANISM KNOB (2) REQUIRES
TORQUE IN EXCESS OF 11 POUND-INCHES
(1.24 N-M) TO ROTATE.
Check v-bearing tightness.
Adjust torque (ref. para 4-24j).
LEVEL ASSEMBLY
5. CROSS-LEVEL (3) BUBBLE OR PITCH LEVEL (4)
BUBBLE DOES NOT CENTER WITHIN ONE
GRADUATION.
Observe visually
Adjust levels (ref. para 4-24e).
4- 9
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