The brake system is one of the most important safety systems on any motor
vehicle. It is therefore essential to
act with utmost care when working on the brake system and to follow the
instructions b
IMPORTANT: Only brake test stands (analyzers) with test speeds of 2.5 -
6 km/h may be used.
Before driving onto the brake test stand (dynamic brake analyzer), switch off
the Hill Descent Control (HD
Special tools required:
34 1 260.
NOTE: The thickness of the outer brake pads can be determined without
removing the
wheels.
If necessary, move car until opening for brake pad wear indicator (bra
WARNING: Danger to life!
Mount securing fixture for vehicle on lifting platform to prevent the
vehicle from slipping off or tilting down.
Necessary preliminary tasks:
Remove side assembly compartment partition wall.
Remove spring strut holder.
IMPORTANT: Risk of damage
Secure spring strut again
Head Gasket
The head gasket design on the N54 is unique to that engine.
It features a multi-layer steel design. There is no silicone rubber perimeter
"shelf" as on the N52. This is not
needed due to the aluminum block on the N54.
The N52KP and N51 engines are still using the head gasket that is f