TM-9-1240-401-34-P
TELESCOPE MOUNT M146: M118A2 AND M118A3; TELESCOPE MOUNT M145: M145A1; PANORAMIC TELESCOPE: M117 AND M117A2; FIRE CONTROL QUADRANT: M15; PERISCOPE: M42
TECHNICAL MANUAL; DIRECT SUPPORT AND GENERAL SUPPORT MAINTENANCE MANUAL
JULY 1993
TM-9-1240-401-34-P - Page 57 of 590
TM 9-1240-401-34&P
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c. CHECKING ELEVATION KNOB MECHANISM RUNNING TORQUE
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1 With torque wrench and adapter (8599922), rotate
elevation knob (1) clockwise and counterclockwise.
NOTE
Torque wrench should indicate running torque
of 56 to 72 ounce-inches (0.395 to 0.508
N-m). If running torque is not within specified
limits, adjust as directed in steps 2 thru 4.
2 Loosen setscrew (2).
3 Using fabricated spanner wrench, adjust threaded
ring (3) until required running torque is obtained.
4 Tighten setscrew (2).
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d. CHECKING DEFLECTION KNOB TRAVEL
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1
2
3
4
5
6
Rotate deflection knob (1) from stop to stop and
check amount of travel.
NOTE
Deflection knob must rotate 2-1/2 complete
revolutions. If the 2-1/2 revolutions cannot be
met, adjust mechanism as directed in steps 2
thru 6.
Loosen setscrew (2).
Loosen self-locking nut (3) on deflection shoulder
screw (4).
Adjust deflection shoulder screw (4) in or out to
obtain minimum travel requirements.
Tighten setscrew (2).
Tighten self-locking nut (3).
2-23
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