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 instruc-
tions. If the necessary tools are not available, or if the procedure tells you to, have organizational maintenance do
EQUIPMENT NOT READY/AVAILABLE IF
Lists the criteria that will limit the use of equipment, or make it not ready for use. Depending on the severity of the
limitation, the reverse osmosis water purification unit may not be able to operate and perform its primary mission.
The terms "ready/available" and "mission capable" refer to the same status: Equipment is on hand and can
perform its combat mission. If tools required to perform PMCS are not listed in the work package, notify unit
maintenance. Write up items not fixed on DA Form 2404 for unit maintenance. For further information on how to
use this form, see DA PAM 738-750.
DOCUMENTATION OF PMCS ITEM FAILURES
PMCS item failures are to be recorded on DA Form 2404, Equipment Inspection, and Maintenance Worksheet,
and forwarded to Unit Maintenance via the vessel's Chief Engineer. Documentation of PMCS item failures must
include the compartment location and item number within the work package to ensure proper dissemination. All
corrected faults will be recorded on DA Form 4640 (Harbor Boat Deck Department Log for Class A&B Vessels)
and DA Form 4993 (Harbor Boat Engine Department Log for Class A and C-1). All uncorrected faults will be
transcribed to a DA Form 2407, Maintenance Request, and the appropriate log entry must be made. The crew
will service the LT as outlined by the intervals contained in the PMCS tables.
CORROSION PREVENTION AND CONTROL (CPC)
Corrosion Prevention and Control (CPC) of Army materiel is a continuing concern. It is important that any corro-
sion problems be reported so that they can be corrected and improvements made to prevent future problems.
Corrosion is typically associated with rusting of metals, but it can also include deterioration of other materials,
such as rubber and plastic. Unusual cracking, softening, swelling, or breaking of materials may indicate a corro-
sion problem. Suspected corrosion problems should be reported using SF 368 (Product Quality Deficiency
Report). Use of key words such as "corrosion," "rust," "deterioration," or "cracking" will ensure that the informa-
tion is identified as a CPC problem.
Equipment operation is allowable with minor leakages (Class I or II) except for fuel
leaks. Of course, consideration must be given to the fluid capacity of the item or system
being checked. When in doubt, ask your supervisor.
When operating with Class I or II leaks, continue to check fluid levels as required in your PMCS. Class III leaks
should be reported immediately to your supervisor. It is necessary to know how fluid leakage affects the status of
the reverse osmosis water purification unit. The following are definitions of the classes of leakage an operator or
crewmember needs to know to be able to determine the condition of the leak. Learn and then be familiar with
them. When in doubt, ask your supervisor.
LEAKAGE CLASSIFICATIONS I, II, III
Leakage classifications. Leakage definitions for operator/crew PMCS shall be classified as follows:
1. Class I: Seepage of fluid (as indicated by wetness or discoloration) not great enough to form drops.