TM 10-4320-317-13
Section II. OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS)
2-3. General. Figure 2-1 (PMCS) routing diagram and Table 2-5 (PMCS table) have been provided so you can keep
your TWDS equipment in good operating condition and ready for its primary mission. Refer to the applicable technical
manuals for specific component PMCS:
a. 125 GPM Pumping Assembly
b. 20,000-Gallon Pillow Tank
c. Hypochlorination Unit
d.
600 GPM Pumping Assembly
2-4. Warnings and Cautions Always observe the WARNINGS and CAUTIONS appearing in your PMCS table.
WARNINGS and CAUTIONS appear before applicable procedures. You must observe these WARNINGS and
CAUTIONS to prevent serious injury to yourself and others or prevent your equipment from being damaged.
2-5. Explanation of Table Entries The following paragraphs describe your PMCS table:
a. Item No. Column. Numbers in this column are for reference. When completing DA Form 2404 (Equipment
Inspection and Maintenance Worksheet), include the item number for the check/service indicating a fault. Item numbers
also appear in the order that you must do checks and services for the intervals listed.
b. Interval Column. This column tells you when you must do the procedure in the procedure column. BEFORE
procedures must be done before you operate or use the equipment for its intended mission. DURING procedures must
be done during the time you are operating or using the equipment for its intended mission. AFTER procedures must be
done immediately after you have operated the equipment.
c. Location and Item to Check/Service Column. This column provides the location and the item to be checked or
serviced. The item location is underlined.
d. 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.
e. 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.
f. Other Table Entries. Be sure to observe all special information and notes that appear in your table.
g. 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.
h. 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/inspected.
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