TM 11-6605-202-12/TO 5N3-3-10-1
SECTION Ill
PREVENTIVE MAINTENANCE
CHECKS AND SERVICES (PMCS)
PAGE
SECTION CONTENTS
GENERAL
BASIC PMCS INFORMATION
COLUMN ENTRIES USED IN PMCS TABLES
PMCS PROCEDURES
GENERAL
4-9 The preventive maintenance checks and services (PMCS) are an easy way to find and correct faults
before they cause serious damage to the compass set. To make sure the set is in good running order
before, during, and after operation, perform the PMCS procedures listed in the tables in paragraph 4-12.
Before you begin the PMCS procedures, REMEMBER:
a. Before you operate, perform your B (before) PMCS to be sure that your equipment is ready to go.
b. After you operate, perform your A (after) PMCS to help keep the compass set in top shape.
c. Always remember PMCS cautions and warnings.
d. If your compass set fails to operate, record the problem on DA Form 2404 and notify Intermediate
Maintenance as soon as possible.
e. In addition to performing your PMCS procedures, check all your equipment for scratches, dents, ex-
posed metal surfaces, cleanliness, and rust. Make a note of all minor defects discovered during operation
and inspection on DA Form 2404. Correct them when operations are over.
CAUTION
If you find a problem or weakness in the compass set which, if you continued
to operate would cause damage or failure, stop operations immediately.
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