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:
11 9 221
11 9 222
11 9 223
11 9 224
11 9 231
11 9 232
11 9 233
Necessary preliminary tasks:
Remove vibration damper
IMPORTANT: Do not release central bolt.
If the central bolt is released, the sprocket wheels of the timing chain and the
oil pump will no longer be
Special tools required:
31 5 200
IMPORTANT: During removal Low Profile band clamp (dotted line) is
overstretched and must
not be reused!
Fig. 128: Identifying Clamp
Removing:
Place special tool 31 5 200 on lugs (1, 2).
NOTE: Make sure that the movable piece (3) of the special tool is
placed on