SEAT Workshop Service and Repair Manuals

Exhaust gas turbocharger : Removing and installing t  Removing → Anchor t  Fitting → Anchor t  Tightening torques → Anchor Check the tool and equipment equivalence table according to the applicability between Seat / VW / Audi / Skoda → Chapter Special tools and workshop equipment required

t  Tightening torque -VAG 1331-, see equivalent → Anchor

t  Pliers -VAS 6340-, see equivalent → Anchor   Caution If a mechanical fault is detected on the turbocharger, for example, a broken blade wheel, changing the turbocharger is not enough. To avoid subsequent damage, carry out the following operations: t  Ensure that the air filter housing, the cartridge and the vacuum hoses are not dirty. t  Ensure that there are no foreign bodies in the supercharger air circuit and the intercooler. If foreign bodies are found in the supercharger air system, the supercharger air circuit should be cleaned and, if necessary, the intercooler replaced.

Removing –  Detach the outer -1- and inner -2- engine covers, by pulling them evenly upwards.

–  Remove the electrical connector -5- from the air mass meter -G70-. –  Remove the ventilation hose -1- and loosen the bracket -2- of the air duct hose -3-. –  Separate the air hose -6- and the flexible air hose -8-. –  Unscrew bolt -7- and remove air filter housing.   WARNING Observe safety precautions when disconnecting the battery → Electrical system; Rep. Gr.27. –  Remove the battery and bracket → Electrical system; Rep. Gr.27 .

–  Remove bolts -2-, -3- and separate the turbocharger air hose -4- from the turbocharger by lifting the retaining clips a little. –  Separate the electrical wiring from clamps -1-.

–  Remove the centre sound proofing → Exterior body installation work; Rep. Gr.50.

–  Remove the front right and left hand side wheel housing protections -fastening points 1 … 3- → Bodywork, exterior fitting work; Rep. Gr.50.

–  Remove bolt -1-. –  Separate the turbocharger air hose and lift the retaining clips -2- slightly. –  Remove charge air pipe. –  Remove right wheel articulated drive shaft from the gearbox flange and move it towards the oil sump.

–  Unscrew bolts -1 ... 3- and remove pendulum arm support. –  Remove the front exhaust section with the particle filter → Chapter. –  Remove right-hand drive shaft → Running gear, axles, steering; Rep. Gr.40.

–  Unscrew the coupling nut of the turbocharger oil supply line -3-.

–  Unscrew the bolt from the bracket -2- of the oil supply line.

–  Unscrew the coupling nut of the oil supply line -3-. –  Separate the oil feed tube.

–  Detach connection hose -2-. –  Remove the connecting pipe for exhaust gas recirculation -3-. –  Remove the oil return pipe -4- by removing bolts -7-, -6- and the hollow bolt -5-.

–  Remove the nuts -arrows-of the thermal protection plate of the exhaust manifold.

–  Unscrew nuts -arrows-. –  Remove the turbocharger/manifold unit between the front mechanical bridge support and the sump. Installing Fit in reverse order from removal, remembering the following:   Note t  Always replace seals, gaskets and self-locking nuts. t  Charge the turbocharger with engine oil using the connection sleeve of the oil supply pipe. t  The sleeves for the hoses and the supercharger air flow tubes should be free of oil and grease before fitting. t  Secure all hose connections with the correct hose clips (original parts) → ETKA (Electronic parts catalogue). –  Place the right articulated drive shaft in the wheel hub without introducing it into the gearbox flange. –  Install the front exhaust section with the particle filter → Chapter. –  Mount right-hand articulated shaft: → Running gear, shafts, steering; Rep. Gr.40. –  Fit the supercharger air system hoses and observe the assembly instructions → Chapter –  Checking the engine oil level → Chapter   Note After fitting the exhaust gas turbocharger, allow the engine to idle for approx. 1 minute to ensure that the exhaust gas turbocharger is correctly lubricated. 1 minute at idle speed, without accelerating, to ensure correct lubrication of the turbocharger. –  Interrogate fault memory of engine control unit → Vehicle diagnosis, testing and information system VAS 5051. Tightening torques

Component		Nm
Exhaust manifold/turbocharger to cylinder head		25 1)
Thermal protection plate to the exhaust manifold/turbocharger		20 1)
Connecting pipe for	Oscillating valve	22
Exhaust gas recirculation to	Exhaust manifold	22 1)
Oil supply pipe to the turbocharger		22
Oil supply pipe bracket to the exhaust manifold		20 1)
Turbocharger bracket to engine block		40
Turbocharger bracket to turbocharger		20
Oil return pipe to the engine block		40
Right hand side supercharger air tube to the oil sump		10
Rear air pipe to bracket		10
Oil supply pipe to oil filter bracket		25
Oil pressure switch to oil filter bracket		20
l  1) Renew bolts.

1)  Renew nuts.