TM 5-6675-317-14
Table 3-1.
OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES - Cont
B - Before
D - During
A - After
W - Weekly
M - Monthly
Q - Quarterly
AN - Annually
S
- Semiannually
BI - Biennially
ITEM
NO.
IN-
TER-
VAL
B
(Number) - Hundreds of Hours
ITEM TO BE INSPECTED
PROCEDURE
STEREO ZOOM TRANSFER SCOPE - Cont
Clean Optical System - Cont
CAUTION
To prevent damage to glass, do not wipe optical
surfaces until dust and foreign matter have
been removed.
Do not touch optical surfaces
with bare fingers.
Do not use same lens brush
on optical surface that is used to clean other
surfaces.
Do not use lens tissue containing
silicone to clean optical surfaces.
Any residue
left on optical glass will affect performance.
1.
Use watchmaker’s blower to carefully remove
all dust, dirt, and foreign matter from exposed
optical surfaces.
2.
Slightly dampen lens tissue with lens cleaner.
3.
Gently wipe one optical surface with moistened
lens tissue.
Use circular motion starting from
center of glass working toward edge.
Dispose of
lens tissue after cleaning one optical surface.
4.
Dry optical surface with fresh lens tissue.
Use circular motion starting at center and work
toward edge.
For Readiness
Reporting,
Equipment Is
Not Ready/
Available If:
3-13
