TM 5-2350-262-10 2-20        Change 6 Table 2-1. Preventive Maintenance Checks and Services for M9  ACE - Continued Location Item No. Interval Item to check/ service Crewmember      Procedure Not Mission    Capable if: 11 During Carrier Communi- cations Equipment Radio During During CB/GS Steer Selector 11 11 Parking Brake Check  radio  equipment  for  proper operation.   Perform   PMCS   lAW TM   11-5820-498-12   and/or   TM 11-5820-401-10-2,    as    needed, See TM 11-5965-286-14 for headset microphone. Place  CB/GS  steer  selector  in CB.  Operate  transmission  shift selectoi^~  from  neutral  to  6th  gear and  observe  that  CB/GS  steer selector   shifts   into   GS   when transmission  shift  selector  hits 5th  gear.  Move  transmission  shift selector  from  6th  to  R2  position and  observe  that  CB/GS  steer selector shifts into CB position. NOTE Parking  brake  must  be  set  with engine  running  and  foot  brake applied. d.  Release  foot  pressure,  shift transmission  into  5th  gear  and apply  power  (about  100  rpm  over idle)  to  see  if  parking  brake  will hold. a. Check parking brake. b.   Push   down   and   hold   brake pedal. c.  Pull  parking  brake  handle  up and over center. CB/GS  steer  selector does  not  move  into appropriate gear when transmission shift selector is placed  in  6th  or  R2 position. Fault    listed    in    ‘Not Fully Mission Cap able     If’     column     of radio    TM.    Will    not transmit    or    receive. Parking brake is defective,  inoperable, out  of  adjustment,  or will  not  hold  vehicle.