DI Diesel Engines M57/M67 - Common Rail Sec. 6 P.6
Course contents/Background material
M57-specific features
• The AUC sensor is located below the centre of the fan shroud.
• The expansion tank is mounted behind the headlights
Vehicle-specific fan shrouds with different apertures are
installed in the E39 and E38. This is necessary due to the fan
displacement by approx. 20 mm. The fan will be damaged if
interchanged.
For differentiation purposes, an identification code is cast in the
top inside of the fan shroud:
• E39M57 Identification code "A"
• E38M57 Identification code "B"
Radiator
Fan shroud
Viscous fan
Intercooler
KT-3864
Fig. 49: Arrangement of cooling assembly - rear view M57
M67-specific features
• Expansion tank integrated in fan shroud
• 5 back-up flaps integrated in fan shroud
• The AUC sensor located above the centre of the fan shroud.
• Brush seal installed in cutout of fan shroud to improve uphill
driving cooling properties
In the E38, the water level (level switch) for the expansion tank is
indicated as standard in the instrument cluster.
© BMW AG, Service Training
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