TM 9-1240-400-34&P
Table 5-3. GENERAL SUPPORT TROUBLESHOOTING (CONT)
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
2.
ELEVATION CONTROL (1) EXCEEDS 0.5 MIL BACKLASH.
a.
b.
Check for worn worm shaft assembly.
3.
ELEVATION CONTROL (1) REQUIRES TORQUE IN EXCESS OF 13.00 IN.-LB (1.47 N-m) TO ROTATE.
a.
Check V-bearing tightness.
b.
Check for worn worm shaft and/or bearings.
Replace worm shaft and/or bearings. Refer to page 540.
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