16-09-2021

Bearings scored from lack of oil supply or bad oil / contamination

  1. Ihi Turbo Repair Manual Transmission
  2. Ihi Turbo Repair Manual Pdf
  3. Ihi Turbo Repair Manual Parts

Bearing failure

Ihi

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Manual

Scored bearing on turbine wheel. See shaft is blue from getting hot from lack of oil lubrication

Cracked turbine housing at exhaust inlet

Cracks in trubine housing inside housing

Turbo

Internal turbine housing cracks

Ihi turbo japan

Burst compressor wheel

Foreign object damage to compressor wheel

Turbo

Compressor wheel failure after scrubbing walls of compressor cover, secondary failure after bearings have failed

Exhaust bypass cracks

Ihi Turbo Repair Manual Transmission

Compressor wheel scrubbing compressor cover

Foreign object damage on compressor inlet

Foreign object damage on compressor inlet

Thrust bearing stack up

Ihi Turbo Repair Manual Pdf

Example of thrust bearing cracks and damage

Thrust bearing scoring and damage

Piston ring damage and bearing journal damage from lack of proper oil supply

Broken turbine wheel and shaft from abrupt stop

Broken turbine wheel blade from foreign object damage, most likely from an engine valve or piston

Foreign object damage from engine

Damage to turbine wheel from scrubbing turbine housing

Vanes on variable vane geometry turbo

Damage to vanes on variable vane geometry turbo

Turbocharger air flow diagram

Ihi Turbo Repair Manual Parts

Possible Failure DiagnosisEngine Running HotPoor Transient ResponseSmokeEngine Lacks PowerBlack Exhaust SmokeBlue Exhaust SmokeHigh Oil ConsumptionTurbocharger NoisyCyclic Sound from the TurbochargerOil Leak from Compressor SealOil Leak from Turbine Seal
Dirty air cleaner
Clean or replace element according to manufacturer’s recommendations
Restricted compressor intake duct
Remove restriction or replace damaged parts as required
Restricted air duct from compressor to intake manifold
Replace seals, gaskets or tighten fasteners as required
Restricted intake manifold
Refer to engine manufacturer’s manual and remove restriction
Air leak in feed from air cleaner to compressor
Replace seals, gaskets or tighten fasteners as required
Air leak in feed from compressor to intake manifold
Replace seals, gaskets or tighten fasteners as required
Air leak between intake manifold and engine
Refer to engine manufacturer’s manual and replace gaskets or tighten fasteners as required
Foreign object in exhaust manifold (from engine)
Refer to engine manufacturer’s manual and remove obstruction
Restricted exhaust system
Remove restriction or replace damaged parts as required
Exhaust manifold cracked, gaskets blown or missing
Refer to engine manufacturer’s manual and replace gaskets or damaged parts as required
Gas leak at turbine inlet/exhaust manifold joint
Replace gasket or tighten fasteners as required
Gas leak in ducting after turbine outlet
Refer to engine manufacturer’s manual and repair leak
Restricted turbocharger oil drain line
Remove restriction or replace damaged parts as required
Restricted engine crankcase breather
Refer to engine manufacturer’s manual, clear restriction
Turbocharger bearing housing sludged or coked
Change engine oil and oil filter, overhaul or replace turbocharger as required
Fuel injection pump or fuel injectors incorrectly set
Refer to engine manufacturer’s manual and replace or adjust faulty components as required
Engine valve timing incorrect
Refer to engine manufacturer’s manual for correct settings and adjust as required
Worn engine piston rings or liners
Refer to engine manufacturer’s manual and repair as required
Burnt valves and/or pistons
Refer to engine manufacturer’s manual and repair as required
Excessive dirt build-up on impeller and/or diffuser vanes
Clean in accordance with the appropriate manufacturer repair manual
Turbocharger damaged
Find and correct cause of failure, repair or replace turbocharger as necessary
Failed diaphragm
Replace using correct Actuator Service Kit
Siezed valve
Free valve/replace complete turbine housing sub-assembly
Leaking hose
Replace hose and clips
Wastegate mechanism set incorrectly