Turbocharger Component Overview

Turbocharger Component Overview






I - => [ Wastegate Bypass Regulator Valve (N75) and Turbocharger Recirculation Valve (N249) ]

II - => [ Coolant Supply and Oil Pipes ]

III - => [ Turbocharger and Coolant Return Pipe ]

IV - => [ Vacuum Diaphragm ]

Wastegate Bypass Regulator Valve (N75) and Turbocharger Recirculation Valve (N249)






1 Turbocharger

• Can only be replaced with the exhaust manifold and pressure unit.

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

2 to the Evaporative Emission (EVAP) Canister

3 Turbocharger Vacuum Diaphragm

• Checking, refer to => [ Turbocharger Vacuum Diaphragm, Checking ] Testing and Inspection.

• Removing and installing, refer to => [ Turbocharger Vacuum Diaphragm ] Service and Repair.

4 Hose

5 Hose

6 Bolt

• 3 Nm

7 Wastegate Bypass Regulator Valve

8 Hose

9 Connection

10 Securing Clip

11 Bolt

• 9 Nm

12 Seal

13 Turbocharger Recirculation Valve

• Note the installed position, refer to => [ Turbocharger Recirculation Valve (N249), Installed Position ] Turbocharger Recirculation Valve (N249), Installed Position.

14 Bolt

• 7 Nm

15 Seal

Coolant Supply and Oil Pipes






1 Seal

• Always replace.

2 Banjo Bolt

• 33 Nm

3 Oil Supply Pipe

4 Turbocharger

• Can only be replaced with the exhaust manifold and pressure unit.

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

5 Bolt

• 9 Nm

6 Bolt

• 9 Nm

7 Seal

• Always replace.

8 Banjo Bolt

• 38 Nm

9 Bolt

• 9 Nm

10 Banjo Bolt

• 38 Nm

11 Seal

• Always replace.

12 Coolant Supply Pipe

13 O-ring

• Always replace.

14 Bolt

• 9 Nm

15 Gasket

• Always replace.

16 Oil Return Pipe

17 Bolt

• 9 Nm

18 Gasket

• Always replace.

Turbocharge and Coolant Return Pipe






1 Gasket

• Always replace.

2 Nut

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

• Always replace.

• Lubricate the studs of the exhaust manifold with hot bolt paste; for the hot bolt paste.

3 Banjo Bolt

• 38 Nm

4 Seal

• Always replace.

5 Coolant Return Pipe

6 Bolt

• 9 Nm

7 Turbocharger

• Can only be replaced with the exhaust manifold and pressure unit.

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

8 Bracket

9 Bolt

• 30 Nm

• Lubricate the bolt with hot bolt paste; for the hot bolt paste.

10 Bolt

• 30 Nm

• Lubricate the bolt with hot bolt paste; for the hot bolt paste.

11 Nut

• 30 Nm

• Do not loosen to remove the turbocharger.

• Always replace.

• Lubricate the studs of the exhaust manifold with hot bolt paste; for the hot bolt paste.

12 Fastening Strip

Turbocharger Nut Tightening Sequence





- Tighten the nuts - 1 through 5 - in 4 passes 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.

Vacuum Diaphragm

• Engine codes CCTA and CBFA do not have an adjustable vacuum diaphragm.






1 Turbocharger

• Can only be replaced with the exhaust manifold and pressure unit.

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

2 Turbocharger and Vacuum Diaphragm

• Checking, refer to => [ Turbocharger Vacuum Diaphragm, Checking ] Testing and Inspection.

• Removing and installing, refer to => [ Turbocharger Vacuum Diaphragm ] Service and Repair.

3 Bolt

• 10 Nm

4 Nut

• 9 Nm

• Secure with sealing wax.

• Not available with engine codes CCTA and CBFA.

5 Securing Plate

• Not available with engine codes CCTA and CBFA.

6 Knurled Nut

• Not available with engine codes CCTA and CBFA.