TM 9-2520-272-34&P CHAPTER 3 OPERATOR MAINTENANCE 3-1.  INTRODUCTION. The  following  paragraphs  and  table  contain  Preventive  Maintenance  Checks  and  Services  (PMCS)  for  the  truck.    The PMCS table lists checks and services necessary to ensure that the truck is ready for operation.  Operator PMCS is limited to inspection and service tasks as they are listed in the Maintenance  Allocation  Chart  (MAC).    Operator  maintenance  is performed  at  the  specified  intervals  listed  on  the  PMCS  table  (Table  3-1).    The  operator  performs  these  tasks  before operating the truck, during the operation of the truck, and after it is shut down. a. Before   PMCS   Procedures.      Before:      PMCS   is   performed   just   before   operating   the   truck.      Pay   attention   to WARNINGS, CAUTIONS, and NOTES. b. During   PMCS   Procedures.      During:      PMCS   is   performed   while   the   truck   is   in   operation.      Pay   attention   to WARNINGS, CAUTIONS, and NOTES. c. After  PMCS  Procedures.    After:    PMCS  is  performed  immediately  after  operating  the  truck.    Pay  attention  to WARNINGS, CAUTIONS, and NOTES. d. Weekly   PMCS   Procedures.      WEEKLY:      PMCS   is   performed   once   a   week.      Pay   attention   to   WARNINGS, CAUTIONS, and NOTES. e. Equipment  Failure.    If  the  truck  or  any  of  its  components  fail  to  operate,  do  not  operate  correctly,  or  if  damage  is observed,  refer  to  troubleshooting  instructions  in  Chapter  4.    Any  equipment  failures  or  operation  problems  should  be recorded on the proper forms.  These forms are a permanent record of services, repairs, and modifications made on the truck.  They are a checklist to know what was wrong with the truck after its last use and whether those faults have been checked.  Refer to DA Pam 738-750 for information on forms and records. f. Always perform PMCS in the same order until it becomes a habit.  Once practiced in the same order, problems will be spotted in a hurry. g. If  something  looks  wrong  and  cannot  be  repaired  immediately,  enter  it  on  the  DA  2404  form.    If  something  seems seriously wrong, report it immediately to unit maintenance. h. When performing PMCS, take the tools and rags needed to make the checks. 3-1