TM 5-6675-326-14
4-9 OPERATING PROCEDURES.
This section contains step-by-step instructions covering operator performed maintenance functions.
4-9.1 Adjust Drag
PERSONNEL REQUIRED: I Terrain analyst MOS 81Q
TOOLS: 1/8-in. socket-head screw key
a.
b.
c.
Rotate attachment lens and stage lens to vertical and horizontal positions. Observe if gravity pulls lenses
down or if tension is too great to easily move lenses.
Use socket-head screw key on adjustment screws. Turning key to right tightens adjustment screw, in-
creasing drag. Turning to left loosens adjustment screw, decreasing drag.
Test adjustment by positioning lenses. Observe that lenses retain position. Movement must be firm but
not too tight.
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