Necessary preliminary tasks:
Release screws (1).
Tightening torque: 11 41 1AZ.
Installation:
Replace aluminium screws.
Remove intake pipe (2) in direction of arrow.
Installation:
Replace sealing ring.

NOTE: To release bolt (1), insert a 6 mm drill bit between sprocket wheel and oil pump housing.
Release bolt (1).
Tightening torque: 11 41 6AZ.
Release screws (2).
Tightening torque: 11 41 5AZ.
Installation:
Replace aluminium screws.

Fig. 246: Bolt And Screw
IMPORTANT: Observe different screw lengths.
Release screws (1).
Tightening torque: 11 41 2AZ.
Tightening torque: 11 41 3AZ.
Installation:
Replace aluminium screws.

Fig. 247: Screws
Detach sprocket wheel (1) in direction of arrow.
NOTE: Chain tensioner presses timing chain (3) upwards.
Do not remove sprocket wheel (1).
Remove oil pump (2) in direction of arrow.

Fig. 248: Removing Sprocket Wheel
Installation:
Check spacers (1) for secure seating and damage; replace if necessary.
Align twin surface (3) on oil pump (2) to sprocket wheel (4).
Install oil pump (2).

Fig. 249: Spacers, Oil Pump And Sprocket Wheel
Assemble engine.
Removing And Installing/Replacing Chain Module For Oil Pump/Vacuum Pump
(N52K)
Water Pump With Drive
Thermostat And Connections
Overview
Bonding Steel Parts