REPLACING ALL SPARK PLUGS (N42, N40, N46, N45, N52, N52K, N51)
Special tools required:
12 1 171
12 1 200.
Necessary preliminary tasks:
Switch off ignition
Remove ignition coils.
Unscrew spark plugs with special tool 12 1 171.
Installation:
Tighten down spark plugs with special tool 12 1 171a
The permissible trailer loads, axle weights, drawbar
node weights, and the permissible gross vehicle
weight are specified in the technical data.
The vehicle is equipped with an enhanced suspension
system on the rear axle and, depending
on the vehicle type, with a more powerful cooling
system.
When