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Page Title: Section III. OPERATION UNDER USUAL CONDITIONS
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TM 10-4930-247-13&P Section III.  OPERATION UNDER USUAL CONDITIONS 2-10.  ASSEMBLY AND PREPARATION FOR USE. a. Site Selection.  Select a level installation area free of overhead obstructions .  The site must be accessible to the HEMTT tanker and approaching aircraft and be large enough to contain all system components.  Surface contour must provide good drainage away from operating equipment and aircraft staging points. After selecting the installation area, position HTARS equipment near the site. b. Unpacking. (1) Remove HTARS components from transport vehicle. (2) To aid assembly, separate components into groups of similar parts during removal.  For example, group all the fuel hoses together, then all the tees, elbows and nozzles. c. Unrolling Fuel Hoses.  Refer to figure 2-7. WARNING Proper  grounding  of  HTARS  components  is  required  to  prevent  static  sparks  and possible  fire  or  explosion.    Do  not  mix  components  from  other  fuel  systems  with the  HTARS  system.    HTARS  hoses  are  internally  grounded  and  must  not  be  used with ungrounded hoses. NOTES · The following instructions apply to all fuel hoses used in  the  HTARS.    Repeat these procedures for each fuel hose during fuel system assembly. · Hose  straps  have  two  loops.    One  loop  is  used  as  a  handle  to  lift  and  carry hose; the other loop is wrapped over hose to prevent loss of hose strap. (1) Position rolled fuel hose (1) at first connection point. (2) Pull tag end of hose strap (3) against buckle (4) until slide (2) releases tension on strap.  Remove tag end of strap from buckle. (3) Unroll fuel hose (1) in direction of next connection point. (4) When end of roll is reached, go back to coupling ends of hose and pull one end to next connection point. (5) Swivel dry break couplings (5 and 6) so that control arms are facing up. d. Dry Break Coupling Assembly.  Components of the HTARS are equipped with dry break couplings to permit rapid system assembly and disassembly.  There are two types of dry break couplings; valved and non-valved.  Valved dry  break  couplings  permit  isolation  of  defective  components  and  control  of  fuel  flow  by  opening  or  closing  the hand  operated  valve  built  into  the  coupling.    Non-valved  dry  break  couplings  do  not  have  an  internal  ball  valve. The following paragraphs describe procedures to connect both types of couplings. 2-21

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