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 107 of 590
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TM 9-1240-401-34&P
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Turn collimating telescope holder (11) and
collimating telescope (10) toward plumbline until
reticle crossline intersection point is superimposed
on plumbline.
Revolve collimating telescope holder (11) and
collimating telescope (10) until vertical reticle line is
superimposed on plumbline. Secure collimating
telescope (10) in this position.
Turn collimating telescope holder (11) and
collimating telescope (10) back until vertical reticle
line is superimposed on vertical reticle line of
collimating projector (6).
If not superimposed, revolve collimating projector
(6) until vertical lines are superimposed. Secure
collimating projector (6) in this position.
Set collimating projector (6) to 600-meter
(650-yard) parallax setting.
b. INSTALLING M118A2/M118A3 ELBOW TELESCOPE ON TELESCOPE FIXTURE
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Check that mating surfaces are free of dirt, burrs,
and other imperfections which may interfere with
proper seating, then install M118A2/M118A3 elbow
telescope (1) on telescope fixture (2).
Insert tapered pin (3) through adapter block (4) and
into M118A2/M118A3 elbow telescope (1), making
certain the telescope spherical ring is seated in
forward clamping block (5).
Secure tapered pin (3).
Position top holder of forward clamping block (5)
with two special screws (6). Allow bearing of
M118A2/M118A3 elbow telescope to rotate in
clamping block.
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