TM 5-3805-262-343-1. ENGINE MAINTENANCE (CONT)a. EngineTune-up(SHEET14OF21).(7) Fuel Injection Governor Adjustments (Cont).(b) Full Load Governed Speed Adjustment.1Start engine and operate at idle speed until normal operating tempera-ture is obtained.2Tell assistant to operate vehicle at full load and watch exhaust. Iflight brown exhaust haze is visible, full load governed speed adjust-ment is okay. If black smoke is visible , or if there is a lack ofpower and no haze or smoke is visible, shut down engine and go to step3below.3Cut and remove two wireseals from cover platecapscrews. Discard wireseals.4Remove four capscrews andcover plate.The following adjustment is sensi-tive. Adjust full load deliveryscrew no more than 5 degrees at atime .If you turn full load de-livery screw too far, fuel in-jection pump will require removaland calibration on factory teststand.5Loosen nut and turn fullload delivery screw no morethan 5 degrees usingscrewdriver. Turn full loaddelivery screw clockwise ifengine lacks power and noexhaust haze or smoke wasvisible; turn counter-clockwise if black smoke wasvisible.6Hold full load delivery screw using screwdriver and tighten nut.7Repeat steps 1 and 2 above. If necessary, readjust full load deliveryscrew until light brown exhaust haze is visible during full load oper-ation.3-16
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