BMW 5251 Service Manual page 151

Cylinder Head Removal and Installation
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4
Remove top engine cover by releasing quick release fasten-
ers (arrows) by pressing down.
NOTE-
Earlier models may have an engine cover with pry off caps
and fasteners In place of quick release fasteners.
4
Remove left and right interior ventilation ducts (left side
shown):
-
Release locking tabs (A) or locking strap (early models, not
shown).
Release spring lock (B).
* Rotate duct inward (arrow) to remove.
Disconnect electrical harness from hood light switch (C).
Release locking clip and remove ventilation housing cover
(D).
Lift out housing from inner fender.
-
Removal of right side ventilation housing is similar.
4
Air filter housing assembly, removing:
Disconnect electrical harness connectors from mass air
flow sensor (A) and temperature sensor (B).
Loosen hose clamp (C).
Remove filter housing mounting fastener (arrow) and re-
move filter housing with mass air flow sensor.