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 TM 9-1240-375-34&P
0100 00
TEST AND INSPECTION - Continued
Torque Inspection - Continued
8
9
6
1 fc 6 8 8
5.
Place torque wrench adapter (8) on torque wrench (6). Place over elevation knob (9).
6.
Move torque wrench (6) and observe readings. Torque must be between 5 in.-oz (0.03 N-m) and
40 in.-oz (0.28 N-m). If torque cannot be met, return M137/M137A2/M137A3 telescope to depot
maintenance.
7.
If torque requirements cannot be met, turn in M137/M137A2/M137A3 panoramic telescope.
Illumination Inspection
2
1
1 fc 6 8 9
1.
Take M137 telescope (1) into darkened area and wait 5 minutes, while eyes adjust to the darkness.
WARNING
TRITIUM
GAS (H3)
If not illuminated, follow radioactive safety precautions in warning summary.
2.
Turn on switch if testing M137A2/M137A3 telescope.
3.
Ensure vertical reticle line (2) is clearly visible and illuminated.
0100 00-30
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