TM 5-3805-260-24NOZZLE ASSEMBLY TROUBLESHOOTING GUIDEPROBLEMCAUSECORRECTIONReturn Leakage High1. 1.Too much wear or scratches at1 Make replacement of nozzleguideassembly2.Parts are bad2 Make replacement of nozzleassemblyReturn Leakage Low1 Foreign material on valve1 Clean area with solvent2.Not enough clearance2 Make replacement of nozzleassemblyopening Pressure Not Correct1 Adjustment wrong1 Make adjustment See ADJUST-MENT OF 9N3979 FUEL NOZZLES2.Parts are bad2 Make replacement of nozzleassemblyTip Leakage1 Deposits in seat area1. Disassemble and clean nozzle2.Seat for valve bad2 Make replacement of nozzle3.Parts have failed3 Make replacement of nozzle4.Crack at tip of nozzle4 Make replacement of nozzlemake replacement of nozzleassemblyOrifice Discharge Is Not Correct1 Orifices have a restriction or are1 Clean orifices, if office are bad,2.Crack at tip of nozzle2 Make replacement of nozzle3 Debris inside nozzle at bottom of3 Clean nozzle SeeSpecialIn-tipstructlonFormNo.SEHS7292forcleaningprocedures4.Adjustment of lift screw not correct4. Make adjustment See ADJUST-MENT OF 9N3979 FUIELNOZZLES2-44
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