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TM 10-3930-664-24 2-26.  FUEL SHUTOFF BALL VALVE REPLACEMENT This task covers:  Removal, Cleaning, Inspection, and Installation INITIAL SETUP: Tools and Test Equipment: Equipment Condition: General Mechanics Tool Kit (1, App.  E) Fuel Tank Servicing (para.  2-34), Drain Pan (10, App.  E) drain fuel tank Materials / Parts: Diesel Fuel (11, 12, 13, App.  C) Teflon Tape (35, App.  E) A.  REMOVAL WARNING Fuel is very flammable and can easily explode.    To  avoid  serious  injury  or death, observe the following precautions:  - Keep away from open flame or any spark (ignition source). - Keep at least a B-C fire extinguisher within easy reach when working with fuel or on the fuel system. -  Do  not  work  on  fuel  system  when engine is hot. - Post signs that read "NO SMOKING WITHIN 50 FEET" when  working  with open fuel, fuel lines, or fuel tank. 1.     Place  handle  of  fuel  shutoff  valve  in  closed  position (handle parallel to side of tank). 2.     Disconnect  fuel  hose  assembly  (1)  from  elbow  (2) and allow fuel to drain into pan.  Remove elbow and cap hose end. 3.     Remove  shutoff  ball  valve  (3)  from  pipe  nipple  (4). Remove   nipple   from   tank   only   if   replacement   is required. 2-95

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