Turbocharger and Coolant Return Pipe Overview

Turbocharger and Coolant Return Pipe Overview

• Secure all hose connections using hose clamps appropriate for the model type.

• Hose connections and charge air system hoses must be free of oil and grease before installing. For connector couplings, the seal and sealing surfaces must only be lightly oiled. Refer to => [ Charge Air Hose, Disconnecting and Connecting ] Charge Air Hose, Disconnecting and Connecting.

• The charge air system must be properly sealed.

• Replace the self-locking nuts.

• Hose clip pliers (VAS 6362) or (V.A.G 1921) are recommended for installing spring clamps.

• Add oil to the turbocharger through the oil supply pipe connection to the turbocharger

• After installing the turbocharger, let the engine idle for approximately 1 minute without increasing the engine speed. This ensures adequate oil supply to the turbocharger.

• Pay attention to the rules of cleanliness. Refer to => [ Clean Working Conditions ] Fuel Supply.






1 Gasket

• Always replace.

2 Nut

• Tightening sequence, refer to => [ Turbocharger Nut Tightening Sequence ].

• Always replace.

• Coat exhaust manifold stud bolts with hot bolt paste, refer to the Parts Catalog.

3 Banjo Bolt

• 38 Nm

• To remove and install, the turbocharger must be removed.

4 Seal

• Always replace.

5 Coolant Return Pipe

6 Bolt

• 9 Nm

7 Turbocharger

• Can only be replaced with the exhaust manifold and vacuum diaphragm.

• Removing and installing, refer to => [ Turbocharger ] Turbocharger.

8 Bracket

9 Bolt

• 30 Nm

• Coat the bolt with hot bolt paste, refer to the Parts Catalog.

10 Bolt

• 30 Nm

• Coat the bolt with hot bolt paste, refer to the Parts Catalog.

11 Nut

• 30 Nm

• Always replace.

• Do not loosen to remove the turbocharger.

• Coat the exhaust manifold stud bolts with hot bolt paste, refer to the Parts Catalog.

12 Fastening Strip

Turbocharger Nut Tightening Sequence





- Tighten the nuts - 1 through 5 - in 4 steps as follows:

- 1. Tighten the nuts to 5 Nm.

- 2. Tighten the nuts to 12 Nm.

- 3. Tighten the nuts to 16 Nm.

- 4. Tighten the nuts to 25 Nm.