Quantcast Cold Start Advance Unit - TM-5-3895-382-24_305

 
  
 
TM 5-3895-382-24 NOTE: Do not rotate the fuel injector nozzle after the fuel injector nozzle has been tightened to the specified torque.      Rotating   the   fuel   injector   nozzle   will cause  a  broken  seal  of  the  antiseize  compound between the threads.  A seal which is broken may allow   leakage   of   combustion   gas   through   the threads. Cold Start Advance Unit Some   of   the   Lucas,   Bosch,   and   Stanadyne   fuel   injection pumps have a cold start advance unit.  The cold star advance unit holds the timing of the fuel injection pump in an advance position when the engine is cold. NOTICE It is Important that the electrical connections to the sender unit are connected correctly.  If the cold start advance unit fails   to   operate   correctly,   engine   damage   may   result because   the   engine   timing   will   be   fully   advanced   for normal engine operation. The cold start advance unit is on the rear of the timing case on the left side of the engine. The cold start advance unit on the Lucas and the Bosch fuel injection  pumps  operate  in  a  similar  manner.    As  the  engine begins  to  reach  normal  operating  temperature,  the  cold  star advance unit energizes.  By energizing, the fuel Injection pump timing is retarded to the correct timing for normal operation. The  cold  star  advance  unit  on  the  Stanadyne  fuel  injection pump  operates  differently.    As  the  engine  begins  to  reach normal operating temperature, the cold start advance unit will de-energize.  By de-energizing, the fuel injection pump timing is retarded to the correct timing for normal operation. NOTICE Damage  to  the  engine  will  occur  if  the  engine  is  load tested  at  more  than  80  percent  of  full  load  with  the  cold start advance unit disconnected. Illustration 59 Lucas DP200 fuel injection pump. (1) Engine stop solenoid (2) 3 Amp wire (3) Sending unit (4) 3 Amp wire (5) 6 Amp wire (6) Fuel injection pump (7) Cold start advance unit (8) Start switch Illustration 60 Bosch fuel injection pump. (1) Fuel injection pump (2) 3 Amp wire (3) Engine stop solenoid (4) Sending unit (5) 3 Amp wire (6) Cold start advance unit (7) 6 Amp wire (8) Start switch 6-69


 


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