Carefully! If mechanical defects of the turbocharger are detected, for example, the destruction of the compressor impeller, it is not enough just to replace the turbocharger. To avoid subsequent damage, the following work must be carried out. Clean all oil lines and hoses, Change the engine oil and oil filter, Check the air filter housing, filter element and air intake hoses for contamination. Check for foreign bodies in the intake tract and intercooler. If found, remove them from the intake tract, if necessary, replace the intercooler.
Drain coolant. Remove exhaust pipe with catalytic converter. Remove the air filter housing. Remove lambda probe -G39-. Loosen clamp -2-. Unscrew screw -1 - press left air duct slightly to the left and detach it from turbocharger.
Disconnect coolant hose -arrow-. Disconnect connectors -1 and 2-. Open holder -3-.
Remove screw -1- for earth wire, disconnect connector -arrows- and lay wiring harness to one side. Loosen clamp -2- and detach coolant hose.
Loosen retainer -arrow- and remove cable retainer -4- from bracket towards top. Unscrew bolts -1, 2, 3- and move coolant pipe to one side.
Remove camshaft adjuster actuators -arrows-.
Remove nut -1- and screws arrows-. Remove heat shield -2-.
Unscrew screw -1-, loosen screw -3- only. Detach bracket -2- for turbocharger.
Disconnect connectors -1 and 3-. Press clamps on crankcase breather hose -2- and disconnect hose.
Unscrew screws -1- and remove fitting. Remove screws -2 and 3- and remove oil supply and return lines.
Remove nuts -arrows-. Pull and remove the turbocharger from the cylinder head towards the top.
Installation
Installation in reverse order.
Note: Replace self-locking nuts as well as lip seals, O-rings and gaskets. Apply refractory grease to the threads of the turbocharger studs. Fill the exhaust turbocharger with engine oil via the oil feed connection. The hose fittings and hoses of the air pressurization system must be free of oil and grease before installation. Secure all hose connections with appropriate standard clamps.
Install exhaust pipe with catalytic converter. Correct the position of the elements of the exhaust system (install stress-free). Fill up the coolant. Check oil level.
Note: After installing the turbocharger, let the engine idle for about 1 minute and do not increase the engine speed in order to supply oil to the turbocharger.