TM 10-4320-303-13
2.2.2.4 Procedure Column. This column gives the procedure you must do to check or service the item listed
in the Check/Service column to know if the equipment is ready or available for its intended mission or for
operation. You must do the procedure at the time stated in the interval column.
2.2.2.5 Not Fully Mission Capable if: Column . Information in this column tells you what faults will keep your
equipment from being capable of performing its primary mission. If you make check and service procedures
that show faults listed in this column, do not operate the equipment. Follow standard operating procedures for
maintaining the equipment or reporting equipment failure.
2.2.3 Other Table Entries. Be sure to observe all special information and notes that appear in your table.
2.2.4 Special Instructions. Preventive maintenance is not limited to performing only those checks and
services listed in the PMCS Table. Covering unused receptacles, stowing unused accessories, and other
routine procedures such as equipment inventory, cleaning components, and touch-up painting are not listed in
the table. These are things you should do any time you see that they need to be done. If a routine check is
listed in the PMCS Table, it is because experience has shown that problems may occur with this item. Take
along tools and cleaning cloths needed to perform the required checks and services.
2.2.5 Leakage Definitions. Leakage definitions operator/crew PMCS are classified as follows:
Class I
Seepage of fluid (indicated by wetness or discoloration) not great enough to form drops.
Class II
Leakage of fluid great enough to form drops but not enough to cause drops to drip from
item being checked.
Class III
Leakage of fluid great enough to cause drops to drip from item being checked.
NOTE
The TWDS can be operated with Class I and Class II leaks. When in doubt notify
supervisor of leak.
Do not operate TWDS with a Class III leak. Class III leaks must be reported to your
supervisors or to Unit Level Maintenance for corrective action.
If the equipment must be kept in continuous operation, do only the procedures that can be
done without disturbing operation. Make the complete checks and services when the
equipment can be shutdown.
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