Exhaust Manifold: Service and Repair

Turbocharger With Attachments, Removing And Installing

Part I







1 40 Nm
- Coat threads with G 052 112 A3
2 Seal
3 10 Nm
- Must not be loosened
4 Vacuum diaphragm
- For boost pressure regulator valve
- Can only be replaced together with turbocharger
- Boost pressure regulation
5 Fuse
6 Turbocharger
- Boost pressure regulation.
- The boost pressure regulator valve and vacuum diaphragm for boost pressure regulator valve are part of the exhaust turbocharger and cannot be replaced individually.
- Before connecting oil supply line, fill turbocharger with oil at filler tube
- After installing turbocharger, let engine idle for approx. 1 minute without increasing engine speed. This ensures adequate oil supply to the turbocharger.
7 O-ring
8 10 Nm
9 Intake manifold
10 Seal
- Note installed position
11 20 Nm
12 Heat shield
13 10 Nm
14 Banjo fitting, 30 Nm
15 Oil supply line
16 30 Nm
- Coat threads and bolt head contact surface with G 052 112 A3
17 Exhaust manifold
18 Seal
- Note installed position
19 20 Nm
20 Banjo fitting, 30 Nm
21 25 Nm
- Coat threads with G 052 112 A3
22 Banjo fitting, 35 Nm
23 Coolant return line
24 25 Nm
25 Spacer sleeve
26 Banjo fitting, 35 Nm
27 10 Nm
28 Coolant supply line
29 Banjo fitting, 35 Nm
30 30 Nm
- use only original bolts from parts catalog
31 Bracket
- Between turbocharger and cylinder block
32 25 Nm
33 Seal
34 Seal
35 10 Nm
36 Oil return line
- To oil pan
37 10 Nm
38 10 Nm
- Do not change orientation
- Must not be loosened

Part II







1 Deceleration shut-off valve
2 Connection hose
- To Recirculating valve for turbocharger -N249-*
3 Pressure regulator valve
- For crankcase ventilation
4 Connection hose
- from deceleration shut-off valve to upper air guide pipe
5 to crankcase breather valve
6 From air filter
7 upper air guide pipe
- note installation position of heat shield mat
- Vehicles with engine code AWP, AWW with quick-release connection (with O-ring and retaining clip)
- Vehicles with engine code AWD with screw-type clamps
8 Bracket
9 40 Nm
10 25 Nm
11 to connection hose for lower connection sleeve/charge air cooler
12 O-ring
- only vehicles with engine code AWP, AWW
13 Retaining clip
- Check for secure fitting
- only vehicles with engine code AWP, AWW
14 10 Nm
15 from turbocharger exhaust tube
16 Connection hose
17 Connection hose
- to vacuum diaphragm for boost pressure regulator valve
18 Retaining clip
- Check for secure fitting
19 O-ring
20 Intake hose
- to intake tube of turbocharger
21 Wastegate Bypass Regulator Valve -N75-*
- Valve is activated (pulsed) by the Engine Control Module (ECM)
- Closed when no voltage present, limits charge pressure