BMW X5: Engine Mechanical Overview
BMW X5 (G05) 2019-2026 Service & Repair Manual / Engine Service Information / Engine Mechanical Overview
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Crankcase
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
Bolts
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
Cylinder Head Cover
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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Ignition Wires, Spark
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
Air Pump, Lines And Connectors
REMOVING AND INSTALLING/REPLACING AIR PUMP (N62)
Remove upper section of intake filter housing.
Release retaining screws on coolant expansion tank.
Remove suction filter housing.
Remove raw air housing.
Unlock and disconnect pressure and suction lines (1).
Loosen screws (2).
Loosen screw (3).
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