Turbocharger Overview
Turbocharger 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. On connector couplings, the seal and sealing surfaces must only be lightly oiled. Refer to => [ Air Guide Pipes and Hoses with Connector Coupling ] Service and Repair.
• Charge air system must be properly sealed.
• Replace the self-locking nuts.
• Hose clip pliers (VAS 6362) or hose clip pliers (V.A.G 1921) are recommended for installing spring clamps.
• Add oil to turbocharger through oil feed line connecting piece.
• After installing turbocharger, let engine idle for approximately 1 minute without increasing engine speed. This ensures adequate oil supply to the turbocharger.
• Pay attention to the rules of cleanliness. Refer to => [ Clean Working Conditions ] Clean Working Conditions.
Part I
1 Turbocharger
• Can only be replaced with 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 ] Turbocharger Vacuum Diaphragm, Checking
• Removing and installing, refer to => [ Turbocharger Vacuum Diaphragm ] Service and Repair
• Adjusting, refer to => [ Turbocharger Vacuum Diaphragm, Adjusting ] Adjustments
4 Hose
5 Hose
6 Bolt
• 3 Nm
7 Wastegate Bypass Regulator Valve (N75)
8 Hose
9 Connection
10 Clip
11 Bolt
• 9 Nm
12 Seal
• Replace
13 Turbocharger Recirculating Valve (N249)
• Note installation position, refer to => [ Installation Position of ]
14 Bolt
• 7 Nm
15 Seal
• Replace
Installation Position of Turbocharger Recirculating Valve (N249)
- Note installation location - arrows -.
Part II
1 Seal
• Replace
2 Bolt
• 30 Nm
3 Oil Supply Line
4 Turbocharger
• Can only be replaced with exhaust manifold and pressure unit.
• Removing and installing, refer to => [ Turbocharger ] Turbocharger
5 Bolt
• 9 Nm
6 Bolt
• 9 Nm
7 Seal
• Replace
8 Bolt
• 35 Nm
9 Bolt
• 9 Nm
10 Bolt
• 35 Nm
11 Seal
• Replace
12 Coolant Supply Line
13 O-ring
• Replace
14 Bolt
• 9 Nm
15 Gasket
• Replace
16 Oil Return Line
17 Bolt
• 9 Nm
18 Gasket
• Replace
Part III
1 Gasket
• Replace
2 Nut
• Replace
• Tightening sequence, refer to => [ Turbocharger - Tightening Sequence ]
• Coat the exhaust manifold stud bolts with hot bolt past; hot bolt paste. Refer to the Electronic Parts Catalog (ETKA).
3 Bolt
• 35 Nm
4 Seal
• Replace
5 Coolant Return Line
6 Bolt
• 9 Nm
7 Turbocharger
• Can only be replaced with exhaust manifold and pressure unit.
• Removing and installing, refer to => [ Turbocharger ] Turbocharger
8 Bracket
9 Bolt
• 30 Nm
• Coat the bolt with hot bolt paste; hot bolt paste, refer to the Electronic Parts Catalog (ETKA)
10 Bolt
• 30 Nm
• Coat the bolt with hot bolt paste; hot bolt paste, refer to the Electronic Parts Catalog (ETKA)
11 Nut
• 30 Nm
• Replace
• Coat the exhaust manifold stud bolts with hot bolt past; hot bolt paste, refer to the Electronic Parts Catalog (ETKA)
• Do not open when removing turbocharger
12 Fastening Strip
Turbocharger - Tightening Sequence
- Tighten the bolts - 1 through 5 - in 4 stages as follows:
- 1. Tighten the bolts to 5 Nm.
- 2. Tighten the bolts to 12 Nm.
- 3. Tighten the bolts to 16 Nm.
- 4. Tighten the bolts to 25 Nm.
Part IV
1 Turbocharger
• Can only be replaced with exhaust manifold and pressure unit.
• Removing and installing, refer to => [ Turbocharger ] Turbocharger
2 Turbocharger Vacuum Diaphragm
• Checking, refer to => [ Turbocharger Vacuum Diaphragm, Checking ] Turbocharger Vacuum Diaphragm, Checking
• Removing and installing, refer to => [ Turbocharger Vacuum Diaphragm ] Service and Repair
• Adjusting, refer to => [ Turbocharger Vacuum Diaphragm, Adjusting ] Adjustments
3 Bolt
• 10 Nm
4 Nut
• 9 Nm
• Secure with sealing wax; sealing wax, refer to the Electronic Parts Catalog (ETKA)
5 Securing Plate
6 Knurled Nut
Additional Tightening Specifications
