TM 5-3805-261-34FUEL SYSTEM MAINTENANCE.3-24.Fuel Injection Nozzles. (Sheet 3 of 3)TESTINGWARNINGSafety glasses must be wornwhen testing fuel injectionnozzles. Failure to do somay cause INJURY. If you areinjured, seek medical aidimmediately.NOTEAll carbon must be removedfrom injection nozzle tipbefore proceeding withtesting.Using injection nozzle tester andcalibration oil at 65 to 75 degreesF, test injection nozzle for valveopening pressure. Valve openingpressure must be 2050 to 2350 psi.NOTEIt is possible for thepressure reading of the gageto go down fast if the valvemakes a noise (chatters) whenit opens. It is alsopossible for the pressurereading of the gage to bealmost constant when thevalve in the fuel injectionnozzle opens.INSTALLATION1.Position injection nozzle on topof cylinder head (Figure 3-83).2.Install clamp and bolt.NOTEReturn 130G Grader tooriginal equipment condition.End of Task3-115
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