Section VI. General Support Final Inspection Procedures
5-25. GENERAL
a. This section describes and illustrates the final inspection procedures for the M117/M117A2 panoramic telescope.
A final inspection will be performed prior to returning the M117/M117A2 panoramic telescope to the using unit or
to the supply system.
b. If the M117/M117A2 panoramic telescope to be inspected fails to meet the required standards, ensure that the
maintenance authorized at the applicable level has been performed correctly. If necessary, send the
M117/M117A2 panoramic telescope to depot maintenance.
c.
Any time the seal of the M117/M117A2 panoramic telescope is broken, the M117/M117A2 panoramic telescope
must be purged and charged.
5-26. M117/M117A2 PANORAMIC TELESCOPE FINAL INSPECTION AND ADJUSTMENT
This task covers:
Level travel and lift
a.
Setting up azimuth testing fixture
j.
b. Visual inspection
k. Reset counter operation and adjustment
c.
Gunner's aid counter operation and adjust-
1.
ment
d. Eyepiece focus
m. Elevation knob torque inspection
e.
Parallax adjustment
Image tilt adjustment
f.
Reset counter knob torque inspection
n.
Parallelism of reticle and image
g.
o.
Gunner's aid knob torque inspection
h. Plumb travel and line of sight travel
Azimuth knob torque inspection
p.
i.
Azimuth errors (800-mil steps) and back-
Purging and charging
lash (azimuth mechanism)
q.
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