Installation:
If necessary, align shaft of flap(s) to be actuated to position of servodrive
to be installed.
Fig. 4: Identifying Servodrive Position
OVERVIEW OF ACTUATOR DRIVES ON HEATER/AIR CONDITI
Notes
WARNING: Danger of scalding!
Only perform this work after engine has cooled down.
Recycling
Coolant emerges when coolant lines are detached. Have a suitable collecting
container ready.
Catch a
REPLACING ALL SPARK PLUGS (N54, N63, N74)
Necessary preliminary tasks
Switch off ignition.
Remove IGNITION COILS.
IMPORTANT: Wear safety goggles.
Oil and dirt particles may get into your eyes!
Clean spark plug slot with compressed air.
Unscrew spark plugs with special tool 12 1 220 and extensi