TM 9-2320-289-343-45.FUEL INJECTOR PUMP CALIBRATION.This task covers:a. Testing Equipmente. CalibrationRequirementsf. After Calibrationb. Preparation for Calibrationg. Checking and Adjustingc. AdjustmentTiming Markd. Preliminary TestingINITIAL SETUP:Equipment conditionMaterials/Partsl Fuel injector pump removed.l One face cam pin(See paragraph 3-37). One timing cover gasket. Calibration fluid (Item 13,l Fuel oilAppendix B)(Item 25, 26, or 27, Appendix B)l Pipe sealant (Item 61, Appendix B)Tools/Test EquipmentGeneral Safety InstructionsAdjustable dc voltage sourcelAir-timing fixtureFuel flowmeterlFuel injector pump test standOrifice fittinglProtractorRetention torque adapterThrottle advance gageThrottle advance gage gasketTorque wrenchTransfer pressure tap adapterEnsure that governor cover is installedbefore operation of fuel injector pump.DO NOT perform this procedure nearfire, flames, or sparks.Compressed air used for cleaningpurposes should never exceed 30 psi(207 kPa).a .TESTING EQUIPMENT REQUIREMENTS1 .Injector lines used for testing must be 0,093 in. (2.36 mm) inside diameter and 25 in.(63.5 cm) long.2 .Test stand injector nozzles must include a 0.020 in. (0.5 mm) orifice plate.3 .Calibration fluid temperature must be checked as close to transfer pump inlet as possible.Operating temperature should be 110°F-115°F (43.3°C-46.1°C).4 .Fuel supply pressure to fuel injector pump must be set at 4.5-5.5 psi (31-38 kPa).5 .The fuel injector pump test stand must include the following:(a)(b)(c)(d)(e)Self-alining zero-backlash drive coupling.Digital tachometer.Adjustable dc voltage source. Used to check operation of cold advance solenoid andshutoff solenoid.Transfer pressure gage. Used to measure transfer pump, pressure. Operating rangeshould be 0-160 psi (0-1103 kPa), calibrated in 1 psi (6,895 kPa) increments.Housing pressure gage. Used to measure housing pressure. Operating range should be0-30 psi (0-207 kPa).3-161
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