BMW N55 Manual page 38

Index
A
B
C
D
E
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Note: If a customer complains about high oil consumption and oil is
discovered in the turbocharger, it should not be immediately assumed
that the turbocharger is defective. If the oil is present in the fresh air pipe
(before the turbocharger) then the entire engine should be checked.
38
N55 Engine
Explanation
Excess pressure
Vacuum
Exhaust gas
Oil
Blow-by gas
Air cleaner
Intake manifold
Impact plates
Oil return channel
Crankcase
Oil sump
Oil return channel
Exhaust turbocharger
Oil drain valve
Charge air intake line
Hose to charge air intake line
Non-return valve
Pressure regulating valve
Throttle valve
Non-return valve
Passages in cylinder head and cylinder head cover