TM9-4310-396-13
Section IV - UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES
(PMCS)
4-9 INTRODUCTION.
4-9.1 Preventive Maintenance Checks and Services. PMCS are essential to ensure that the compressor is
ready for operation at all times. The purpose of a preventive maintenance program is to discover and correct
defects and deficiencies before they can cause serious damage or complete failure of the equipment. Any
effective preventive maintenance program must begin with the indoctrination of operators to report all unusual
conditions noted during daily checks or actual operation to Unit maintenance. All defects and deficiencies
discovered during maintenance inspections must be recorded, together with corrective action taken, on DA
Form 2404 (Equipment Inspection and Maintenance Worksheet).
4-9.2 Schedule for Unit Preventive Maintenance Inspection and Service. A schedule should be established
immediately after startup of the compressor.
4-9.3 Preventive Maintenance Checks and Services. Refer to Table 4-1 for PMCS which shall be performed
at specified intervals by Unit maintenance personnel. Following is the columnar headings, codes, and locations
designations used in the table.
4-9.3.1 Item Number Column. Item numbers are assigned consecutively to each check or service task.
These numbers are to be used as a source of item numbers for the TM Number column on DA Form 2404,
Equipment Inspection, and Maintenance Worksheet in recording results of PMCS.
4-9.3.2 Interval Column. The interval columns are divided into two categories: Weekly and Monthly.
4-9.3.3 Location. Item To Check/Service Column. This column lists the item to be checked or serviced, and
the location of the item within the equipment such as "Exterior", "Interior", "Engine", or "Compressor".
4-9.3.4 Procedure Column. The procedure is described by which the check or service is to be performed.
Illustrations are included to assist in locating the part of the equipment requiring the check or service.
4-9.3.5 Not Fully Mission Capable If: Column. Entries in this column are keyed specifically to the
procedure column. A condition that causes the covered equipment to be less than fully ready to perform its
assigned mission.
4-9.3.6 Other Table Entries. Be sure to observe all special information and notes that appear in the table.
WARNING
Before performing PMCS, allow sufficient time for compressor to cool. Failure to
observe this warning may result in severe personal injury.
NOTE
All procedural instructions assume that the hoods are raised or have been removed
if necessary for access.
4-5
