Valves - BMW 5251 Service Manual

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Cylinder Head and Valvetrain
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4
Remove air filter housing and ducts:
Loosen hose clamps as necessary and disconnect electri-
cal harnesses.
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Remove air filter housing mounting fastener (arrow).
Loosen hose clamp at throttle body.
Remove air filter housing with mass air flow sensor and
duct.
Disconnect the following electrical harness connectors.
Knoclc sensors (A).
Thermostat housing (B).
Throttle position sensor/throttle position switch and idle
valve (C).
Camshaft position sensor (D).
* Ignition coils (E).
Remove mounting nuts (arrows)
ducting.
from wiring harness