Cartridge HX55 3591077 4049337 Volvo FH12 D12C

What needs to be done when a turbocharger fails?
The most important step is to find the cause of the failure. There are many types of turbocharger failures and many different causes. If something acted on the turbocharger to cause its failure, the cause needs to be remedied before the repaired turbo or another one is fitted. Failure to identify the cause may lead to a repeat failure. Sending the failed unit to a turbocharger specialist for analysis and then discussing the failure with one of our trained technician can help point you in the right direction and get you up and running again.
Other things that should be inspected or carried out are listed below. This list is not a complete list as some engines have other components that may need to be checked also. This is intended to be a guide only:
.Take some time to inspect the air intake and exhaust systems to ensure they are in good condition and free from contaminates. If your turbo fails catastrophically, parts of the failed turbocharger can end up in the intake or exhaust system only to reappear after the new turbocharger is fitted. This will result in damage to the new unit.

Change the oil in the engine and the oil filter(s). You may need to remove the sump to ensure all the material from the turbocharger failure is cleaned out. Remove and inspect the oil feed pipe and fittings for contaminants and restrictions. Take this opportunity to change your air filter as well.
Inspect the intercooler for condition. There may be quantities of oil or parts from the failed turbocharger in the intercooler that need to be cleaned out. Check fir cracks or indications of leakage.
If the vehicle has a catalyst or DPF (or both) in the exhaust system these need to be cleaned, regenerated or replaced to ensure correct operation and that they are not causing restriction.
Check all intake pipes before and after the turbocharger for leaks, cracks or hoses that are failing.
Check for exhaust leaks before and after the turbocharger and the condition of your muffler(s).
Check the EGR (Exhaust Gas Recirculation) system for leaks and correct operation.
Check the boost control system for correct operation. Many modern vehicles have ECU driven boost control systems. This also applies to R2S (Regulated 2 Stage) turbocharger installations.
Check for correct operation of the AMS (Air Mass Sensor) or AFM (Air Flow Meter) and replace if it does not meet the engine manufacturers parameters. This is particularly important on systems with a Variable Geometry or Variable Nozzle type of turbocharger.