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TM 10-4320-351-14
Section III. UNIT PREVENTIVE MAINTENANCE
CHECKS AND SERVICES (PMCS)
4.5 GENERAL.
Preventive Maintenance Checks and Services (PMCS) involves systematic caring, inspection, and servicing of equipment
to keep it in good condition and prevent breakdowns. Table 4-1 lists the pumping assembly PMCS. Service intervals are
divided into categories: B Before Operation; D During Operation; A After Operation; and various other checks and
services to be performed at prescribed hourly intervals. Table 4-1 organizes your PMCS tasks in chronological sequence.
As the pumping assembly operator, you should:
a. Perform your PMCS as scheduled in table 4-1. Always do your PMCS in the same order, so it gets to be a
habit. Always assume explosive vapors are present at the pumping assembly. Do not allow any smoking or
spark producing equipment within fifty feet of the pumping assembly while performing your PMCS.
b. Do your BEFORE (B) PMCS prior to the equipment leaving its staging/service area or performing its intended
mission. Keep in mind the WARNINGS and CAUTIONS.
c. Do your DURING (D) PMCS during pumping assembly operation. Leaks can be spotted only during operation.
Keep in mind the WARNINGS and CAUTIONS.
d. Do your AFTER (A) PMCS as soon as possible after the pumping assembly has been taken out of its mission
mode or returned to its containment area. Keep in mind the WARNINGS and CAUTIONS.
e. If your equipment fails to operate, perform the operator troubleshooting procedures presented in this manual.
Report unresolved maintenance problems to unit maintenance personnel.
WARNING
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DO NOT use diesel fuel, gasoline, or benzine (benzol) for cleaning.
·
DO NOT SMOKE when using cleaning solvent. NEVER USE IT NEAR AN
OPEN FLAME. Be sure there is a fire extinguisher nearby and use cleaning
solvent only in well-ventilated places. Flash point of solvent is 138° F (60° C).
·
USE CAUTION when using cleaning solvents. Cleaning solvents evaporate
quickly and can irritate exposed skin. In cold weather, contact of exposed
skin with cleaning solvents can cause frostbite.
f. Cleanliness. Dirt, grease, oil and debris only get in the way and may cover up a serious problem. Use dry
cleaning solvent SD (P-D-680) or some other suitable cleaning solvent on all metal surfaces.
g. Bolts, Nuts and Screws. Check bolts, nuts and screws for obvious looseness and missing, bent or broken
conditions. Look for chipped paint, bare metal or rust around bolt heads. If any part is loose, notify Unit
Maintenance.
h. Welds. Look for loose or chipped paint, rust or gaps where parts are welded together. If a bad weld is found,
notify Unit Maintenance.
i. Electric Wires and Connections. Look for cracked or broken insulation, bare wires and loose connectors. If a
bad wire or connector is found, notify Unit Maintenance.
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