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 TM 55-1905-221-14-1
SECTION II. PREVENTIVE MAINTENANCE
CHECKS AND SERVICES (PMCS)
2-3. GENERAL.
a. Preventive maintenance is the systematic care, servicing and inspection of equipment. The purpose of P.M. is
to keep the equipment in serviceable condition, and to prevent, find and repair conditions that could render the
equipment unserviceable. The vessel crew is responsible for operator/organizational maintenance. The engineering/
deck personnel engaged in preventive maintenance checks and services should correct any deficiencies noted at the
time of the check/ inspection. Deficiencies noted that are above the crew level of maintenance will be reported to DS/GS
level utilizing DA Form 2407 (Maintenance Request) in accordance with DA PAM 738-750.
b. To insure that the landing craft is ready for operation at all times, it must be inspected systematically so that
defects may be discovered and corrected before they result in serious damage or failure. The columns in table 2-1 are
explained below.
c. Item No. checks and services are numbered in chronological order. The item numbers in this column shall be
used as a source of item numbers for the "TM Number" column on DA Form 2404. The personnel performing the PMCS
will utilize DA Form 2404 (Equipment Inspection and Maintenance Work Sheet). The form will be annotated in
accordance with paragraph 3-4, figures 3-4 and 3-5, DA PAM 738-750. The DA Form 2404, used for recording the
PMCS, will be furnished to the appropriate supervisor for action.When all corrected faults have been recorded on DA
Form 5273 (Deck and Engine Log for Class B Vessels) and all uncorrected faults have been transcribed on to DA Form
2407 (Maintenance Request), the DA Form 2404 can be discarded unless it is required for historical data.
d. Intervals. This column is sub-divided into six columns marked B, D, A, M, Q and B/A. The letters indicate the
Before, During, After, Monthly, Quarterly, and Bi-annual preventive maintenance checks and services required on the
landing craft.
e. Item to be inspected. The items listed in this column are divided into groups indicating the portion of the
equipment they are part of.
f. Equipment will be reported not ready/available if. An entry in this column will identify conditions that make the
equipment not ready/available for readiness reporting purposes and deny use of the equipment until corrective
maintenance has been performed.
2-4. PMCS PROCEDURES.
a. This paragraph contains a tabulated listing of preventive maintenance checks and services that are to be
performed by the operator or crew.
2-25
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