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3-8
TM 750-116
3-9. PERISCOPE, M65 BATTERY COM-
MANDER’S (fig. 3-17).
NOTE
Both tubes of the Battery Commander’s Peri-
scope must be purged and charged separately. Re-
peat procedure for each tube assembly.
Ensure that nitrogen is escaping from both outlet
ports before proceeding with charging proce-
dures.
Figure 3-17 M65 Battery Commander’s Periscope
a.
Perform purging and charging procedure para 2-5.b.
b. Purge instrument at 5 psig for 10 minutes.
c.
Charge instrument at 1 psig maintaining pressure for
20 seconds.
d. Leak test for minimum of 5 minutes.
3-10. PERISCOPES, TANK.
a. Periscope, M28C Tank (fig. 3-18).
NOTE
The eyeshield must be removed to provide access
to outlet screw.
Figure 3-18 M28C Tank Periscope
(1) Perform purging and charging procedure para
2-5.b.
(2) Purge instrument at 5 psig for 10 minutes.
(3) Charge instrument at 1 psig maintaining pressure
for 10 seconds.
(4) Leak test for minimum of 5 minutes.
b. Periscope, M30C Tank (fig. 3-19).
NOTE
The periscope must be removed from installed
position for purging and charging operations.
Refer to appendix A for a listing of applicable
publications.
Figure 3-19 M30C Tank Periscope
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