TM 9-2320-302-10 0012 00-14 Table 1. Preventive Maintenance Checks and Services (PMCS) for M915A3 - Continued. Item No. Interval Location Procedure Not Fully Mission Capable If: Item To Check/ Service 28 After Fifth Wheel a. Check  fifth  wheel  lube  plates (36)    for    severe    chips,    wear, cracks, gouges or bends. Check if  25%  or  more  of  lube  plate coating  is  missing  from  one  or both plates due to normal wear or damage. a.  One    or    both    lube plates are loose, missing or damaged. b. Check  for  operation  and  dam- age  to  lock  release  levers  (39), slide    locking    plungers    (38), sliding    rails    (37),    and    fifth wheel plate (35). b.  Lock   release   levers do not operate. Locking jaw mecha- nism   is   cracked   or worn. REAR AND RIGHT SIDE 29 After Overall View a. Check under truck for evidence of   fluid   leakage   such   as   oil, coolant or fuel. a.  Class III oil, coolant, or fuel leaks are evi- dent. b. Check rear gladhands for dam- age.  Ensure  that  gladhand  vent holes  are  not  plugged.  Ensure that dummy couplings are installed. 37 38 39 35 36