Item No. 1 2 Interval Before Before Table  2-10.    Preventive  Maintenance  Checks  and  Services  for  Pumping  Assembly Location Item  to Check/Service EXTERIOR Leaks TRAILER CHASSIS Frame 3 4 5 6 Model 609-A. Procedure Inspect  ground  for  evidence  of leaks. If   leaks   are   present, notify  unit  maintenance. Inspect  all  frame  seam  welds for  damage. If   weld   is damaged,   notify   unit maintenance. Not  Fully  Mis- sion   Capable   if: Any  evidence  of leaks. Weld  is  damaged. Before Before Before Before Axle   and   Springs Lunette Park Brake Levers Rear  Jacks Check  for  damage. If  damaged, notify  unit  maintenance. Check  for  damage. If  damaged, notify  unit  maintenance. Check  that  levers  on  both sides   of   trailer   are   locked. Check  for  proper  adjustment. Adjust  as  needed. Check   rear   jacks   for   damage. Check   that   rear   jacks   are secured   and   operable.   If required,    operate   rear   jacks to   level   trailer. If   rear jack   is   damaged   or   not operable,    notify   unit maintenance. Axle   or   spring   is damaged. Lunette  is damaged. Park  brake(s) damaged or inoperable. Rear  Jack  is damaged  or  not operable. 2-19 TM  10-4320-344-10