ARMY TM 9-2815-257-24 AIR FORCE TO 38G1-128-2 MARINE CORPS TM 10155A/2815-24/3 3-5 Section IV.  UNIT PREVENTIVE MAINTENANCE CHECKS AND SERVICES (PMCS) 3-7.  GENERAL. Unit  Preventive  Maintenance  Checks  and  Services  (PMCS)  means  systematic  caring,  inspecting,  and servicing  of  equipment  to  keep  it  in  good  condition  and  to  prevent  breakdowns.    This  section  lists  PMCS required for the engine assembly and authorized for the unit maintenance level. a.    Be sure to perform your PMCS in the same order, so it gets to be a habit.  Once you have had some practice, you will quickly spot anything wrong. b.    Pay attention to WARNINGS, CAUTIONS, and NOTES. c.    Perform PMCS tasks at the intervals noted in Table 3-1.  Do not skip PMCS intervals. d.    Use  DA  Form  2404  (Equipment  Inspection  and  Maintenance  Worksheet)  to  record  any  faults  you discover, unless you can fix them.  You DO NOT need to record faults that you fix. 3-8.  PMCS PROCEDURES. Your Preventive Maintenance Checks and Services, Table 3-1, lists inspections and care required to keep your engine assembly in good operating condition. a.    Item  No.  Column.    The  Item  No.  column  in  Table  3-1  lists  each  check  /  service  in  chronological order. b.    Interval Column.  The Interval  column tells you when to do a certain check or service.  Intervals are based on operating hours, unless otherwise noted. c. Location Column.  The Location: Item to Check / Service column directs maintenance personnel to the general area on the engine where the check or service is to be performed. d.    Procedure Column.   The Procedure column of Table 3-1 tells you how to do required checks and services.  Tolerances, adjustment limits, and instrument readings are included as applicable.  When replacement or repair of a component is required, the procedures column will direct you to the appropriate task. NOTE Terms  “ready/available”  and  “mission  capable”  refer  to  same  status: Equipment is on hand and ready to perform its combat missions.  (See DA Pam 738-750). e.    Not Fully Mission Capable If Column.  The Not Fully Mission Capable If column in Table 3-1 tells you when your engine assembly is non-mission capable and why the engine assembly cannot be used. f.     If the engine assembly does not perform as required, perform unit level troubleshooting, Section V.