TM 5-3805-258-24-1T R O U B L E S H O O T I N GT E S T I N G A N D A D J U S T I NG29. ALTERNATOR HAS NOISECauseCorrectionDrive Belt for Alternator is Worn orInstall a new drive belt for the alternator.Has aLooseDriveDefectAlternator Drive PulleyCheck groove in pulley for key that holds pulley in place. If groove isworn, install a new pulley. Tighten pulley nut according toSpecifications.Belt and Drive Pulley ForMake an adjustment to put drive belt and drive pulley in correctAlternator Are Not in Alignmentalignment.Worn Alternator BearingsInstall new bearings in the alternator.Armature or Rotor Shaft is BentMake a replacement of the component.Rectifiers in the Alternator AreMake a replacement of the diode assembly.Shorted30. EXHAUST TEMPERATURE IS TOO HIGHWARNINGIf NBC exposure is suspected, aII air filter media should be handled by personnel wearing protectiveequipment. Consult your unit NBC Officer or NBC NCO for appropriate handling or disposal instruc-tions.CauseAir Inlet System Has A LeakExhaust System Has A LeakAir Inlet or Exhaust System Has ARestrictionWrong Fuel Injection TimingCorrectionCheck pressure in the air inlet manifold. Look for restrictions at theair cleaner. Correct any leaks.Find cause of exhaust leak. Make repairs as necessary.Remove restriction.Make an adjustment to the timing.4-94
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