B  -  Before Item No. 18 19 20 TM10-3930-660-10 PREVENTIVE   MAINTENANCE   CHECKS   AND   SERVICES D  -  During A  -  After W  -  Weekly B Interval D A W Item  To  Be  Inspected Procedure:  Check  for  and  repair, fill  or  adjust  as  necessary FUEL   FILTERS   AND   WATER SEPARATOR Drain  water  from  the  water  separator. (1) (2) (3) Remove  the  drain  plug  located on  the  left  side  of  separator  base. Allow  the  water  to  drain. Tighten   drain   plug. EXHAUST   SYSTEM a.  Check  the  exhaust  system  for loose  or  missing  clamps  or hardware. b.  Check  for  evidence  of  leaks  at  all joints   and   connections. ENGINE    LUBRICATION    SYSTEM Check  for  oil  leaks  at  the  valve covers,    tappet    covers,    turbocharger oil  line  and  engine  oil  filter. Equipment   Is   Not   Ready/ Available   If: Class  III  leaks  are evident. 2-23

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