TM 5-6675-317-14
Table 4-1.
OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Cont
B . Before
W - Weekly
AN - Annually
(Number) - Hundreds of Hours
D . During
M - Monthly
s
- Semiannually
A - After
1
IN-
TER-
VAL
B
Q - Quarterly
BI - Biennially
ITEM TO BE INSPECTED
PROCEDURE
ZOOM TRANSFER SCOPE - Cont
STRETCH CONTROL 1 ever, STRETCH DIRECTION
IMAGE ROTATION dial. and ZOOM CONTROL knob
5.
Check
dial,
for rotation and freedom of movement for each
control.
NOTE
Do not remove eyepieces.
6.
Check that each eyepiece moves freely in and out
of its eyepiece tube.
7.
Check INTERPUPILLARY ADJUSTMENT scale and verify
that eyepieces move toward or away from each
other.
4-10
