TM 9-2350-287-10
Table 2-1. Preventive Maintenance Checks and Services for Model M992A1
Location
Item Interval
No.
Item to
Crewmember
Not Fully Mission
Check/
Capable If:
Procedure
Service
DRIVER
54 Weekly M45 Peri-
CAUTION
scopes
Handle periscopes carefully during
removal, to avoid damaging frame
and glass.
a. Remove periscope by loosening
two thumbscrews.
b. Check between carrier wall and
b. Any periscope is
periscope for dirt or moisture.
missing or unser-
viceable, or over
50% of vision is
obstructed.
COMMANDER
55 Weekly M27 Peri-
Check for damage and cleanliness.
Periscope is missing
scope
or over 50% of
vision is obstructed
56
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