Audi Workshop Service and Repair Manuals

Turbocharger - exploded view

Part I, engine codes BYT, BPU

1 -	Turbocharger

q	Can only be renewed together with exhaust manifold and vacuum unit as one unit

q	Removing and installing, engine codes BYT, BPU → Chapter BZB, CAWB, CBFA, CCTA, CDAA, CCZA → Chapter

2 -	To activated charcoal filter

3 -	Vacuum unit for turbocharger

q	Checking → Chapter

q	Removing and installing → Chapter

q	Adjusting → Chapter

4 -

Seal

q

Renew

5 -

Nipple

6 -	Banjo bolt

q

8 Nm

7 -

Hose

8 -

Hose

9 -

Bolt

q

3 Nm

10 -	Charge pressure control solenoid valve -N75-

11 -

Hose

12 -

Seal

q

Renew

13 -	Connection

14 -	Securing clip

15 -

Bolt

q

9 Nm

16 -

Bolt

q

7 Nm

17 -	Turbocharger air recirculation valve -N249-

q	Note installation position → Fig.

18 -

Seal

q

Renew

Part I, engine codes BZB, CAWB, CBFA, CCTA, CDAA, CCZA

1 -	Turbocharger

q	Can only be renewed together with exhaust manifold and vacuum unit as one unit

q	Removing and installing → Chapter

2 -	To activated charcoal filter

3 -	Vacuum unit for turbocharger

q	Checking → Chapter

q	Removing and installing → Chapter

q	Adjusting → Chapter

4 -

Hose

5 -

Hose

6 -

Bolt

q

3 Nm

7 -	Charge pressure control solenoid valve -N75-

8 -

Hose

9 -	Connection

10 -	Securing clip

11 -

Bolt

q

9 Nm

12 -

Seal

q

Renew

13 -	Turbocharger air recirculation valve -N249-

q	Note installation position → Fig.

14 -

Bolt

q

7 Nm

15 -

Seal

q

Renew

Fitting location of turbocharger air recirculation valve -N249- –  Note installation position -arrows-.

Part II

1 -

Seal

q

Renew

2 -

Bolt

q

30 Nm

3 -	Oil supply pipe

4 -	Turbocharger

q	Can only be renewed together with exhaust manifold and vacuum unit as one unit

q	Removing and installing → Chapter

5 -

Bolt

q

9 Nm

6 -

Bolt

q

9 Nm

7 -

Seal

q

Renew

8 -

Bolt

q

35 Nm

9 -

Bolt

q

9 Nm

10 -

Bolt

q

35 Nm

11 -

Seal

q

Renew

12 -	Coolant supply pipe

13 -

O-ring

q

Renew

14 -

Bolt

q

9 Nm

15 -

Gasket

q

Renew

16 -	Oil return pipe

17 -

Bolt

q

9 Nm

18 -

Gasket

q

Renew

Part III

1 -

Gasket

q

Renew

2 -

Nut

q

Renew

q	Tightening sequence → Fig.

q	Lubricate exhaust manifold studs with high-temperature paste. For high-temperature paste refer to → Electronic parts catalogue

3 -

Bolt

q

35 Nm

4 -

Seal

q

Renew

5 -	Coolant return hose/pipe

6 -

Bolt

q

9 Nm

7 -	Turbocharger

q	Can only be renewed together with exhaust manifold and vacuum unit as one unit

q	Removing and installing → Chapter

8 -

Bracket

9 -

Bolt

q

30 Nm

q	Coat with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue

10 -

Bolt

q

30 Nm

q	Coat with high-temperature paste; for high-temperature paste refer to → Electronic parts catalogue

11 -

Nut

q	Do not open when removing turbocharger

q

Renew

q

30 Nm

q	Lubricate exhaust manifold studs with high-temperature paste. For high-temperature paste refer to → Electronic parts catalogue

12 -	Fastening strip

Turbocharger - tightening sequence –  Tighten bolts -1 to 5- in four stages as follows: –  1. Tighten bolts to 5 Nm. –  2. Tighten bolts to 12 Nm. –  3. Tighten bolts to 16 Nm. –  4. Tighten bolts to 25 Nm.

Part IV

1 -	Turbocharger

q	Can only be renewed together with exhaust manifold and vacuum unit as one unit

q	Removing and installing → Chapter

2 -	Vacuum unit for turbocharger

q	Checking, engine codes BYT, BPU → Chapter; engine codes BZB, CAWB, CBFA, CCTA, CDAA, CCZA → Chapter

q	Removing and installing → Chapter

q	Adjusting → Chapter

3 -

Bolt

q

10 Nm

4 -

Nut

q

9 Nm

q	Secure with sealant paint; for sealing paint refer to → Electronic parts catalogue

5 -	Locking plate

6 -	Knurled nut

Further tightening torques

Component	Nm
Air intake pipe (right-side) to sump	10
Air pipe to bracket	10