TM  9-2350-261-20-1 Table  2-1.  Unit  Level  Preventive  Maintenance  Checks  and  Services  for  M113A2  FOV Item Interval Item  To Procedure Not   Mission No. Be Capable  If: Inspected 62 Semi- Power Forward  engine  mount.  Tighten  loose Any  cracked  or  bro- Annual Plant mount  screws  to  360-420  lb-in  (41-48 ken  mounts. Mount N.m) torque. Use torque wrench (Item 95,  Appendix  D)  and  socket  set  (Item 89, Appendix D). Tighten loose mount screws to 90-100 lb-ft (122-135 N.m) torque. Use torque wrench  (Item  97,  Appendix  D). 63 Semi- Drive Check fan belts for proper tension (see Any   belt   that   is Annual Belts your   -10).   Adjust,   if   needed   (page missing, broken, 8-35). frayed more than 2", cracks  1/8”  in  depth of 50% of belt thick- ness. Check generator drive belts for proper tension   (see   your   -10). Adjust,   if needed (page 9-29 or 9-47). Replace frayed or cracked belts (page 8-35,9-29 or 9-47). 64 Semi- Cooling Replace  cracked  or  bent  drive  pulley Any   cracked,   bro- Annual Fan and  idler  pulley  (page  8-41  or  8-37). ken,  loose  or  miss- Replace   loose/worn   bearings   (page ing   hardware. 8-46). Change   3   2-83 CAAAU        a    u-.  -w  .  v  .  .  ..-. v-p     \-!      .     ------       .     -     ---J