Air Bypass Valve: Service and Repair

Turbocharger Recirculating and Wastegate Bypass Regulator Valves Assembly Overview





1 Turbocharger

• Can be replaced only with the exhaust manifold.

• Coat the stud bolts on the exhaust manifold with hot bolt paste (G 052 112 A3).

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

2 Connecting Hose

• Ensure the hose is securely seated.

3 Charge Air Regulation Vacuum Diaphragm

• Checking, refer to --> [ Charge Air Regulation Vacuum Diaphragm, Checking ] Testing and Inspection.

• Removing and installing, refer to --> [ Charge Air Regulation Vacuum Diaphragm ] Charge Air Regulation Vacuum Diaphragm.

4 Connecting Hose

• Ensure the hose is securely seated.

5 Connecting Hose

• Ensure the hose is securely seated

6 Bolt, 3 Nm

7 Wastegate Bypass Regulator Valve (N75)

8 Connecting Hose

• Ensure the hose is securely seated.

9 Connection

10 Securing Clip

11 Bolt, 9 Nm

12 Seal

• Always replace.

13 Turbocharger Recirculating Valve (N249)

• Note the installed position, refer to --> [ Turbocharger Recirculating Valve Installed
Position ].

14 Bolt, 7 Nm

15 Seal

• Always replace.

Turbocharger Recirculating Valve Installed Position





- Note the installed location - arrows -.