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TM 10-4320-348-14 (2) Sound  enclosure  front  panel  assembly.    This  front  panel  combines  with  the  sound  enclosure  cover,  the sound enclosure rear panel assembly, and the engine air intake baffle to provide noise reduction and direct engine  intake  air  to  the  air  cleaner  and  flywheel  fan.    The  front  panel  provides  protection  for  internal components,  wiring  and  mounting  surfaces  for  information  plates,  controls,  indicators,  external  engine  oil crankcase drain, external centrifugal pump casing drain, and connection points for pump suction hoses and external  fuel  supply.    Controls  and  indicators  sufficient  to  support  operation  of  the  pump  unit  under  all conditions  are  provided  on  the  front  panel  assembly  (or  on  the  diesel  engine  itself,  these  are  accessible through the door in the sound enclosure cover).  All controls and indicators are clearly labeled.  Controls and indicators are explained in detail in Chapter 2. (3) Sound enclosure rear panel assembly.  This rear panel combines with the sound enclosure cover the sound enclosure front panel assembly, and the engine air intake baffle to provide noise reduction and direct engine intake air to the air cleaner and flywheel fan.  The rear panel provides protection for internal components, wiring and mounting surfaces for information plates, and connection points for pump discharge hoses and external  electrical  power.    Additionally,  the  rear  panel  provides  a  cutout  through  which  the  spark  arrestor protrudes. (4) Engine  air  intake  baffle.    This  baffle  combines  with  the  enclosures  to  direct  air  to  the  air  cleaner  and  the flywheel  fan.    Additionally,  during  cold  weather  starting  procedures,  this  baffle  encloses  a  space  that  is warmed by the engine intake heater. (5) Intervehicle  power  cable  electrical  plug  connector.    This  electrical  connector  is  used  during  pump  unit operation in cold weather.  It allows the pump assembly to be connected to the 24 volt DC electrical systems of  Army  vehicles.    Pump  assembly  has  two  internal  electric  heaters  that  are  used  during  cold  weather starting of the pump assembly.  The intake air heater warms air coming into the enclosure and the engine intake air.  The engine oil is warmed by an immersion heater installed into the side of the engine facing the sound  enclosure  rear  panel  assembly.    Controls  and  indicators  for  the  two  heaters  are  mounted  on  the sound  enclosure  front  panel  assembly.    This  electrical  connector  has  an  attached  dust  cover  to  prevent damage and contamination when connector is not in use. (6) Intake  air  heater.    This  400  watt  finned  heater  runs  on  24  volts  DC  supplied  from  the  intervehicle  power cable electrical plug connector.  The ’heater mounts on the pump frame. (7) Immersion heater.  This 75 watt immersion heater runs on 24 volts DC supplied from the intervehicle power cable electrical plug connector.  The engine has accommodations for an oil dipstick to be mounted on either side of the engine.  This heater threads into the unused oil dipstick location on the engine crankcase facing the sound enclosure rear panel assembly. (8) Pump  frame.    The  pump  frame  provides  mounting  points  for  the  sound  enclosures,  pump  and  motor assembly, air intake heater, ground rod attachment, etc.  It rigidly supports all components of the pump unit and provides 4 folding handles to allow 4 soldiers to move the pump assembly as required. (9) Pump suction connection.  The connection to the suction side of the centrifugal pump is made through a 1.5 inch nominal ID female quick disconnect.  Installed in this fitting is an internal gasket. When the pump unit is not in use, a male quick disconnect dust plug is installed to protect the centrifugal pump from contamination. (10) Pump discharge connection.  The connection to the discharge side of the centrifugal pump is made through a 1.5 inch nominal ID male quick disconnect.  When the pump unit is not in use, a female quick disconnect dust cap is  installed  to  protect  the  centrifugal  pump  from  contamination.    During  pumping  unit  set  up,  the pump discharge connection is also used to prime the pump with the liquid to be pumped.  Installed in this female quick disconnect is an internal gasket. 1-7

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