 |
|||
|
|
|||
|
Page Title:
Table 1. Troubleshooting Procedures. |
|
||
| ||||||||||
|
|
 TM 9-1240-375-34&P
0027 00
M172/M172A1 TELESCOPE AND QUADRANT MOUNT
Table 1. Troubleshooting Procedures.
MALFUNCTION
TEST OR INSPECTION
CORRECTIVE ACTION
1
1 fc 0 3 9 a
Replace worm shaft assembly
1. CROSS LEVEL CONTROL IS
1. Check for worn or defective
ERRATIC AND ROUGH
worm shaft assembly.
DURING MOVEMENT.
2. Check for worn or defective
Replace gear sector (WP 0080 00).
gears in gear sector.
Replace V-bearing or plain
2. CROSS LEVEL KNOB (1)
1. Check for loose or worn
bearing (WP 0077 00).
EXCEEDS 1.5-MIL
V-bearing or plain bearing.
BACKLASH.
Replace worm shaft assembly
2. Check for worn or defective
worm shaft assembly.
3. CROSS LEVEL KNOB (1)
1. Check V-bearing tightness.
Loosen plug, and adjust torque
REQUIRES TORQUE IN
EXCESS OF 12.00 IN.-LB
(1.36 N-M) TO ROTATE.
2. Check for defective worm shaft
Replace worm shaft assembly,
assembly, plain bearing, or
plain bearing, or V-bearing
V-bearing.
END OF WORK PACKAGE
0027 00-2
|
|
Privacy Statement - Press Release - Copyright Information. - Contact Us |
Click
here for thousands of PDF manuals