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 TM 55-1925-273-10-2
OPERATOR'S MANUAL
INLAND AND COASTAL LARGE TUG (LT)
PMCS INTRODUCTION
PURPOSE AND USE OF PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) DATA
PMCS is performed to keep the Large Tug (LT) in operating condition. The checks are used to find, correct, and report
problems so that defects may be discovered and corrected. PMCS is to be accomplished each day the LT is operated, using
the appropriate work packages. Pay attention to all WARNINGS, CAUTIONS, and NOTES that precede individual steps.
WARNINGS indicate possible danger to personnel. CAUTIONS indicate possible damage to equipment. NOTES are for
clarification and additional information. An explanation is prepared for each PMCS check entry, and for any general checks
and services common to an entire piece of equipment or system. An explanation of PMCS chart columns follows:
ITEM NUMBER COLUMN
The checks and services are numbered within a specific work package in chronological order.
INTERVAL
This column indicates the periodicity of the check or service.
1.
Prior to operating the LT, do Before PMCS.
2.
During LT operation, do During PMCS.
3.
Once a week do Weekly PMCS.
4.
Do Monthly PMCS once a month. If equipment has not been operated in a month, also do During PMCS at the same
time as Monthly PMCS.
5.
Do Quarterly PMCS once a quarter. If the equipment has not been operated in a quarter, also do After PMCS at the
same time as Quarterly PMCS.
6.
Do Semiannual PMCS once every six months. If the equipment has not been operated within the last six months, also
do the Monthly PMCS at the same time as Semiannual PMCS.
7.
Do Annual PMCS once a year.
8.
If a deficiency is noted when performing PMCS, fix it, if possible, using troubleshooting procedures and/or mainte-
nance procedures. If the deficiency cannot be corrected, write up the items not fixed on DA Form 2404 Equpment
Inspection, for unit maintenance. For further information on how to use this form, see DA PAM 738-750.
MANHOUR
This column indicates the projected amount of time that is expected to take to complete the check or service. Checks and
services that require additional personnel include a cumulative amount of time.
ITEM TO BE CHECKED OR SERVICED
This column lists the equipment or item to be checked or serviced.
PROCEDURE COLUMN
This column contains a brief description of how to perform the checks and services, or it contains the reference to the work
package or technical manual that contains the procedural information. Carefully follow the instructions. If the necessary
tools are not available, or if the procedure indicates, have organizational maintenance do the work.
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