TM 9-2350-277-10
PREVENTIVE MAINTENANCE CHECKS AND SERVICES -- Continued
0090 00
ITEM
INTERVAL
MAN-
ITEM TO BE
CREWMEMBER
EQUIPMENT
NO.
HOUR
CHECKED OR
PROCEDURE
NOT READY/
SERVICED
AVAILABLE
IF:
90
Weekly
M17 Periscope
CAUTION
Handle periscope carefully during
removal to avoid damaging the frame
and glass of the periscope.
NOTE
There are no periscopes on the M577A3
and M1068A3 commander's hatch.
a.
Remove periscope by loosening two
thumbscrews.
b.
Check between carrier wall and periscope
Over 50%
for dirt or moisture.
vision
obstructed.
0090 00-114
Change 4
