Operation Manual / TPL69-A10 / -A30 ... TPL77-A10 / -A306 Troubleshooting / 6.2 Surging of the turbocharger© Copyright 2018 . All rights reserved. HZTL2481_EN Revision C May 20186.2 Surging of the turbochargerTurbocharger surgingPossible causes EliminationEngine Guard in front of the tur-bocharger is contaminatedor damagedClean / replace itTurbocharger Filter silencer or diffusercontaminatedClean itHeavy deposits of dirt in theturbine or nozzle ringCharge aircoolerCooler contaminated Clean itCharge air duct blockedCAUTIONProlonged or periodic surgingPossible damage to components, such as the compressor wheel, tur-bine blades, bearings and filter silenceru Have the cause clarified immediately by an ABB Turbocharging ser-vice station and rectified.u Have components inspected for damage and, if necessary, replacedby an ABB Turbocharging service station.Sporadic surge blowsSurging of the turbocharger can occur during certain operating condi-tions such as when reducing the engine performance quickly when man-oeuvring. At the same time, the flow direction in the compressor is mo-mentarily reversed. Such sporadic surge blows do not impair the safeoperation of the turbocharger.¡ A surge blow is accompanied by a loud bang and escape of hot airfrom the filter silencer.Page 72 / 136
