TM 9-1240-400-34&P
5-6.
TROUBLESHOOTING PROCEDURES (CONT).
GENERAL SUPPORT SYMPTOM INDEX
Troubleshooting
Procedure
(Page)
ELEVATION ASSEMBLY
Elevation control is erratic and rough during movement ............................................................................ 5-8
Elevation control exceeds 0.5 mil backlash................................................................................................ 5-9
Elevation control requires torque in excess of
11.00 in.-lb (1.24 newton-meters) to rotate ...................................................................................... 5-9
Table 5-3. GENERAL SUPPORT TROUBLESHOOTING
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
ELEVATION ASSEMBLY
1.
ELEVATION CONTROL (1) IS ERRATIC AND ROUGH DURING MOVEMENT.
a.
Check for worn worm shaft assembly.
Replace worm shaft assembly. Refer to page 5-46.
b.
Check for worn gears in gear sector.
Replace worn gears. Refer to page 5-46.
5-8
