TM 10-3930-671-24 The   person   operating   the   engine   naturally   assumes responsibility for its care while it is being operated.  This is   a   very   important   responsibility   since   the   care   and attention     given     the     engine     goes     a     long     way     in determining how long a period it will operate satisfactorily before having to be shut down for repairs. The  operating  and  preventive  maintenance  instructions for the diesel engines are simple and should be followed without deviation. The entire aim in setting forth these instructions is to give you  a  benefit  of  the  knowledge  and  experience  gained over a long period of collaboration between Engineering Research and Field Service. PREPARATION OF A NEW ENGINE FOR OPERATION Before  placing  a  new  engine  in  operation,  it  must  be thoroughly inspected for external damage  and  particular attention paid to the following items: 1. Close   Water   Drain   Cock   on   the   side   of   the block (in some cases, this may be a pipe plug). Fill radiator and water jacket with coolant.  (See Cooling System Section 4) FUEL INJECTION PUMP The    function    of    a    diesel    fuel    injection    pump    is    to accurately  meter  and  deliver  fuel  to  a  nozzle  in  each cylinder    and    to    inject    it    at    high    pressure    into    the combustion  chamber  at  precisely  timed  intervals.    The extreme   precision   necessary   can   well   be   appreciated since this cycle must be repeated thousands of times per minute  with  virtually  no  variation  in  timing  or  amount  of fuel injected. 2. Fill Crankcase With Oil - Use the oil recommended for the ambient temperature  (see chart). 3. Fill    Fuel    Tank-    See    fuel    recommendations, Section 5. Stop  engine  before  checking  battery terminals   or   electrical   connections. Sparks or flames near a battery could cause  an  explosion  or  fire.    Battery acid can cause corrosive bums. Always  wear  eye  protection.    Use  of Jumper   cables   or   battery   charging should  be  done  only  as  directed  by manufacturers’ safety Instructions. Read and observe safety warnings on pages 1 and 2. 4. Electrical  Connections  -  Check  storage  battery terminals and all electrical connections. STARTING THE ENGINE Bodily  injury  or  death  may  result  to individuals    during    operation    of    an engine     within     any     enclosure     not adequately     or     properly     ventilated. Engine   operation   in   any   enclosure requires adequate and proper ventilation   to   avoid   asphyxiation   or other Interruption of normal breathing.  To supply sufficient air to cool   the   engine,   provide   air   to   mix with fuel and to carry away heated air from the building. If  the  engine  is  new  or  rebuilt  or  if fuel filters have been serviced or any low pressure lines disconnected, fuel system  must  be  bled  to  remove  any air  that  may  have  become  trapped  in the system. Bleed the entire fuel system.  Detailed Instructions for bleeding the Injection systems are given in Section 5. Section 2- Operating Instructions