4-5. CATEGORIES OF INSPECTION (CONT).
Table 4-1. INITIAL INSPECTION-M138 TELESCOPE MOUNT
Item To Be Inspected
M138 Telescope Mount
Inspect for good overall appearance with all parts securely
tightened in place:
Inspect for cleanliness and freedom from nicks and burrs.
Elevation Locking Lever
(1) With lever in locked position, a torque of 5.00 and Elevation
in.-lb (0.56 N-m) applied to worm will not change
alinement of M139 elbow telescope. (2) With lever released,
worm shall move socket 444.45 mils above and below center
Must lock and hold M139 elbow telescope or fabricated bushing.