Audi Workshop Service and Repair Manuals > A4 Mk2 > Power unit | 4-cylinder TDI unit injector engine (2.0 ltr. 4-valve), mechanics | Exhaust system | Exhaust gas recirculation system | Exhaust gas recirculation system

Exhaust gas recirculation system - exploded view

1 -

Gasket

Renew

2 -

25 Nm

3 -	Connecting pipe for exhaust gas recirculation

q	Tightening sequence

4 -	Coolant hoses

5 -	Exhaust gas recirculation cooler

q	Removing and installing → Chapter

6 -

Bracket

7 -	Retaining pin for engine cover panel

8 -

9 Nm

9 -

Gasket

10 -	Vacuum unit

11 -	Vacuum hose

q	From exhaust gas recirculation cooler change-over valve -N345-

12 -

7 Nm

13 -

9 Nm

14 -

Gasket

Renew

15 -

25 Nm

Renew

Tightening sequence: connecting pipe for exhaust gas recirculation

Note

The connecting pipe for exhaust gas recirculation must be installed free of stress as described below:

1.	Tighten bolt connections -1 … 6- for connecting pipe for exhaust gas recirculation hand-tight.

2.	Tighten bolt connections for connecting pipe for exhaust gas recirculation to specified torque in the sequence -1 … 6-.

Audi Workshop Service and Repair Manuals