POWERTECH™ 2.9 L OEM Diesel Engines - John Deere Industrial ...

TroubleshootingAir Intake System TroubleshootingIf turbocharger requires replacement, determine whatcaused the failure of the defective unit, and correct thecondition. This will prevent an immediate repeat failure ofthe replacement unit.NOTE: Turbochargers are equipped on 3029T enginesonly.Symptom Problem SolutionHard to Start or Will Not StartEngine Misfiring or RunsIrregularlyBlack or Grey Exhaust SmokeLack of Engine PowerSee ENGINE TROUBLESHOOTINGearlier in this section.See ENGINE TROUBLESHOOTINGearlier in this section.See ENGINE TROUBLESHOOTINGearlier in this section.See ENGINE TROUBLESHOOTINGearlier in this section.Turbocharger “Screams” Air leak in intake manifold. Check intake manifold gasket andmanifold; repair as required. Seeyour John Deere engine distributoror servicing dealer.Turbocharger Noise or Vibration Bearings not lubricated (insufficient Determine cause of lack ofoil pressure)lubrication; repair as required. SeeNOTE: Do not confuse the whineyour John Deere engine distributorheard during run down withor servicing dealer.noise which indicates abearing failure.Air leak in engine intake or exhaustmanifoldImproper clearance between turbinewheel and turbine housingBroken blades (or other wheelfailures)Check intake and exhaust manifoldgaskets and manifolds; repair asrequired. See your John Deereengine distributor or servicing dealer.Inspect turbocharger; repair/replaceas required. See your John Deereengine distributor or servicing dealer.Inspect turbocharger; repair/replaceas required. See your John Deereengine distributor or servicing dealer.Continued on next pageRG,RG34710,7602–19–13MAR03–1/350-18 060106PN=134