TM-9-1240-401-34&P Technical Manual for M109 Telescopes and Mounts Download
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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