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TM 9-2815-225-34&P 3-63.  FUEL PUMP TESTING AND CALIBRATION (Contd) LOCATION/ITEM ACTION REMARKS j.  Fuel Pump Idle Speed Check 75. Selector valve (36) Turn to IDLE position. 76. Fuel pump assembly (71) Run at 500 rpm. 77. Throttle lever (48) Hold at idle position. Pressure reading on fuel pressure gauge (2) should be 32 psi (220 kPa).  If fuel pressure is incorrect, do step 78.  If fuel pressure is correct, go to step 79. 78. Governor spring pack Using fuel pump idle adjusting Turn fuel pump idle adjusting tool housing (43) tool (90), turn idle adjusting (3375981) (90) clockwise to raise screw in housing (43) until proper fuel pressure or counterclockwise to fuel pressure is obtained. lower fuel pressure.  If adjusting screw bottoms out, stop the test stand, remove the housing (43), and add washers to spring end of screw. 79. Fuel pump idle adjusting Depress stop button (24) and Reinstall plug (89) after adjusting tool (90) disengage from governor spring tool (90) has been removed. pack housing (43). 3-500


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