TM 9-2320-289-343-45.FUEL INJECTOR PUMP CALIBRATION (Con’t).c .ADJUSTMENT1 .2 .3 .4 .5 .NOTEAdjustment in step 1 should be made during applicable step, Adjustmentsin steps 2-5 should be made after all calibration is completed, unlessotherwise stated,If any throttle advance gage (13)reading is not correct, adjust positionof servo adjusting screw (22) to obtainproper reading. After all testing iscomplete, apply pipe sealant to servoadjusting screw.If any flowmeter reading is too low,replace metering screw with a smallermeteringscrew.(See paragraph3-39)If any flowmeter reading is too high,replace metering screw with a largermetering screw.(See paragraph3-39)If any housing pressure reading is notcorrect, test fuel injector pump. (Seeparagraph 3-44) If no leaks aredetected, remove hydraulic head andcheck forincorrectlyassembledcomponents. (See paragraph 3-42)If any transfer pump pressure readingis not correct, remove transfer pumpblades and regulator and check forincorrectly assembled components.(See paragraph 3-41 )d .PRELIMINARY TESTING1. Set test stand supply pump boost pressure at 4.5-5.5 psi (31-38 kpa).NOTETest specifications refer to engine rpm. Most test stand tachometersregister fuel injector pump rpm, which is half of engine rpm. Ensure thatproper adjustments are made during calibration.2.Set rpm at 2000, with throttle lever (17) in wide open throttle position. Allow fuel injector pump torun for 10 minutes to clear remaining air from system and bring fuel injector pump to operatingtemperature.3.Set rpm at 2000, with throttle lever (17) in wide open throttle position. Set transfer pressure gage(6) to indicate 58-64 psi (400-441 kPa). Flowmeter reading must be 225-375 cc, PerformADJUSTMENT if necessary.T A 5 0 7 573-164Change 2
Integrated Publishing, Inc. - A (SDVOSB) Service Disabled Veteran Owned Small Business
