TM 55-1905-223-24-14
Table 2-1. Preventive Maintenance Checks and Services (PMCS) for the Gyro Compass System - CONT
E - Each Watch
W - Weekly
M - Monthly
Interval
Items
Procedures
To Be
Item
Inspected
No.
E
W
M
7
Gyro control and power
Make sure this is set at local latitude. If
assembly LATITUDE control
not, reset to local latitude (TM 55-1905-223-10).
Make sure this switch is set at proper latitude
8
Gyro control and power
position (TM 55-1905-223-10).
assembly N-S switch
proper latitude.
9
Gyro control and power
Record average reading of needle oscillations
assembly level meter
when compass is settled; abnormal deviations
in average values indicate a malfunction.
Notify your supervisor.
10
Gyro control and power
Make sure cable connections and stuffing tubes are
assembly cable connections
secure with no crimps or breaks.
11
Gyro control and power
Check for any accumulated dirt and oil. Remove
assembly exterior surfaces
dirt with a dusting cloth (Appendix C, Item 2).
Remove oil deposits with soft cloth (Appendix C,
Item 2) and cleaning solvent (Appendix C, Item 1).
12
Switch unit exterior
Clean with damp soft cloth (Appendix C, Item 2).
surfaces
2-4
Previous Page
