BMW X5: Engine Mechanical Overview
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As far as the physical appearance and dimensions, the crankcase on the N54 is
the same as the N52. The main
change is in the materials, the N54 uses an all aluminum alloy crankcase. There
is also ca
Although, the N54 engine has an all aluminum crankcase, many of the bolts are
still aluminum as on the N52.
This is to reduce any potential confusion between steel and aluminum bolts.
Some bolts, fo
As stated before, the cylinder head cover used on all of the new NG6 engines
is made from plastic. However, the design differs between the engines due to
engine equipment.
For example, the N54 engi
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Special tools required:
31 4 170
Remove front wheel.
IMPORTANT: Expand turning lock sufficiently to avoid damaging thread
when releasing collar nut.
Release collar nut (1), press brake pedal to floor for this purpose.
Fig. 140: Identifying Collar Nut
Remove left microfilter housing cover.
IMPOR
REPLACING WIRING HARNESS SECTION FOR ENGINE (N52K)
Special tools required:
24 2 390.
IMPORTANT: Read and comply with notes on protection against
electrostatic damage (ESD
protection)!
Necessary preliminary tasks:
Read out DME fault memory
Switch off ignition
Disconnect battery negative lead