Quantcast d.  Fuel Pump Run-in (Big Cam I and Big Cam III)

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TM 9-2815-225-34&P 3-63. FUEL PUMP TESTING AND CALIBRATION (Contd) LOCATION/ITEM ACTION REMARKS d.  Fuel Pump Run-in (Big Cam I and Big Cam III) CAUTION The test stand motor switch (22) is marked "REVERSE" and "FORWARD." For all testing of this pump, the test stand motor switch (22) must be set to the "REVERSE" position. This  position  corresponds  to  the  right-hand  drive  rotation  requirements  for  this  fuel pump.  If the motor switch (22) is in the incorrect position, the pump will run dry and could be damaged. Be certain the fuel filter screen (46) is clean and installed correctly.  Foreign material in the pump could damage seals, gears, or shafts, and plug up the fuel passages.  Check to  see  that  the  fuel  filter  screen  (46)  is  installed  with  the  hole  in  the  screen  at  the bottom.  If the fuel filter screen (46) is installed upside down, it will cut off all fuel flow to the pump.  The pump will then run dry and could be damaged. NOTE For    a    complete    description    and    location    of    the    test    stand    controls,    refer    to TM 9-4910-387-14&P, Tester, Fuel Injection, Single End Drive, 150 to 3000 RPM. 3-478


 


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