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TM 9-6685-202-14
Table 4-1. Preventive-Maintenance Checks and Services-Continued
INTERVAL AND SEQUENCE NUMBER
ITEM
PARAGRAPH
BEFORE
DURING
AFTER
TO BE
PROCEDURES
REFERENCES.
OPERATION
OPERATION
OPERATION
INSPECTED
1
Mercury level in
Check mercury level
barometer.
4-5a
2
Moisture in baro-
Perform referenced procedure if
3-5
meter tube.
moisture has collected in baro-
meter tube or cistern has been
left open to atmosphere.
Annually
1
Adjusting rod (and
Lubricate annually or when adjust-
4-13
cam positioning
ments become difficult to perform.
assembly (type
A-1).
4-4
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