TM 5-6675-328-14
NOTE
These are opposed setscrews and both should be snug, not jammed, against post at completion of
adjusting process.
(c)
Resnug upper adjustment nut on right-hand adjustment screw.
(d)
Recheck roll to see that roll adjustment is now correct.
(8)
Check that split bubble is in coincidence when bullseye bubble is centered in vial. If it is not, adjust mount as
necessary to bring bubble into coincidence. Reverse stride level on collimator barrel. Aline mark made when
stride level was placed on collimator barrel. Allow split bubble to stabilize (5-10 sec). Any error detected is
double the actual error.
(9)
Use tilt adjustment of mounting base to take out half the error.
(10)
Remove remaining error as follows:
(a)
Loosen both top adjusting nuts slightly using adjusting pin provided. (This pin is found in box that contained
stride level.)
(b)
Use only lower left-hand adjusting nut to bring bubble completely into coincidence. Access is through slot.
(c)
Resnug upper adjusting nuts, making sure bubble does not go out of coincidence.
(11)
Reverse stride level and allow bubble to stabilize. If error is still observed, repeat tilt adjustment. Continue this
process until bubble remains in coincidence.
(12)
Recheck roll adjustment. If stride level adjustments are correct, remove stride level from MTC and return to its
case.
CAUTION
Do not touch optical surfaces with fingers or wipe optical surfaces with cloth. Touching optical glass with
fingers will smudge or etch optical coatings. Wiping with cloth may scratch optical coating.
NOTE
Be sure adjustment slots, on MTC, will not ride over V-blocks when collimator is rotated.
Only one of the focusing lens adjustment screw slots is in alignment with the seven reticle adjustment
screws.
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