TM 5-6675-323-14
b.
Loosen capscrews securing X-rail to end support plates. Tighten
l o w e r , r e a r s c r e w s a t e a c h e n d . T h r e e other screws on each end should
be snug.
c.
Fold piece of thick paper over right-hand, rear, upper edge of X-rail to
protect surface. Fit wrench over protected section of X-rail.
d.
Move optical mount to right-hand stop.
M o v e carriage between front and
rear stops. Check collimation.
e.
If collimation is outside 5 minutes of arc, use wrench to turn X-rail
t o b r i n g c o l l i m a t i o n w i t h i n l i m i t s . Tighten upper front attaching
screw on X-rail support plate on right-hand end securely.
Move optical mount to left-hand stop, and repeat procedure for left-hand
f.
end of carriage assembly.
Check Y-axis collimation at point near center of table. Readjust X-
g.
rail, if necessary.
Tighten all four attaching screws on both X-rail support plates, and
h.
recheck collimation in Y-axis.
Move carriage assembly so that autocollimator mirror is near rear end of
i.
stage glass. Move optical mount between left-hand and right-hand limits
while checking collimation.
Move carriage assembly so that autocollimator mirror is near front end
j.
of stage glass.
M o v e optical mount between left-hand and right-hand
limits while checking collimation.
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