TM 10-3930-664-10 3-9. FUEL/WATER SEPARATOR - SERVICE This task covers: Draining water from engine fuel/water separator. 1. CLEAN DRAIN PLUG(1) LOCATED ON BOTTOM OF FUEL/WATER SEPARATOR (2). 2. DRAIN WATER AND SEDIMENT FROM FUEL/WATER SEPARATOR (2). a. Place  suitable  container  under  the  fuel/water separator (2). b. Loosen  drain  plug  (1)  and  allow  water  and sediment   to   drain   into   container   until   only   clear   fuel drains. c. Tighten drain plug (1). d. Dispose   of   fuel   and   water   mixture   drained into container during step b. 3-10.  AIR CLEANER - SERVICE This task covers: Inspecting the air filter element. Cleaning or replacing elements as necessary. WARNING If NBC exposure is suspected, all air filter media should be handled by personnel wearing protective  equipment.  Consult  your  NBC  officer or     NBC     NCO     for     appropriate     handling     or disposal instructions. 1. REMOVE AIR FILTER ELEMENT. a. Open  access  door  on  left  transmission  side cover. b. Turn   thumbscrew   (1)   to   loosen   clamp   (2). Remove end cover (3). 3-18