TM 10-6640-238-13 2-32 Section II.  OPERATOR PREVENTIVE MAINTENANCE CHECKS AND SERVICES  (PMCS) Alphabetical Index Paragraph Title Paragraph General.............................................................................................................................................................. 2-2 Leakage Definitions for Operator PMCS.......................................................................................................... 2-4 PMCS Procedures ............................................................................................................................................. 2-3 2-2. GENERAL. Preventive Maintenance Checks and Services (PMCS) means systematic caring, inspecting, and servicing of MBPL equipment to keep it in good working condition and to prevent breakdown.  The operators mission is to: a. Perform PMCS each time MBPL is put into operation.  Always perform PMCS in the same order, so it becomes a habit. b. Perform BEFORE (BE) PMCS prior to operating the equipment.  Pay attention to WARNINGS, CAUTIONS, and NOTES. c. Perform DURING (DU) PMCS while operating equipment, monitoring equipment and its related components. Pay attention to WARNINGS, CAUTIONS, and NOTES. d. Perform AFTER (AF) PMCS immediately after operating equipment.  Pay attention to WARNINGS CAUTIONS, and NOTES. e. If equipment does not perform as required, refer to Chapter 3, Section II, Troubleshooting for possible problems. Use DA Form 2404 (Equipment Inspection and Maintenance Worksheet) to record any malfunctions or failures that are discovered before, during, and after operation; or refer to DA Pam 738-750.  If a malfunction or failure cannot be corrected, report it to unit maintenance.  Should malfunctions or failures be repaired, they are not required to be recorded. f. Assist unit maintenance when required. g. When an Inspect and service procedure is required for both WEEKLY and BEFORE intervals, it is not necessary to do procedures twice if equipment is operated during the weekly period. h. Perform PMCS procedures for equipment covered by individual TMs, see Appendix A for TM numbers. 2-3. PMCS PROCEDURES. The following paragraphs describe the PMCS and each Column.  See Table 2-14. a. Purpose of PMCS Table.  The PMCS table lists Inspections required to keep the MBPL in good operating condition. b. Item Number.  Item numbers are assigned in chronological, ascending sequence regardless of interval designation.  These numbers are used for the TM number column on DA Form 2404, Equipment Inspection and Maintenance Worksheet, in recording results of PMCS. c. Interval.  Tells when to do specified Inspections. d. Item to Inspect.  Identifies item to be Inspected.