BMW 5251 Service Manual page 90

I
Engine Removal and Installation
WARNING
-
Use extreme caution when draining and disposing of engine
coolant. Coolant is poisonous andlethal to humans andpets.
Pets are attracted to coolant because of its sweet smell and
taste. Seek medical attention immediately if coolant is ingest-
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Working at rear of intake manifold:
Disconnect brake booster vacuum line (A).
Disconnect fuel tank vent line (6).
Disconnect hoses (C and D) at coolant manifold
-
Remove transmission harness support
(E).
-
Remove oil filter housing assembly from fender:
-
Remove oil filter housing mounting fasteners.
Use stiff wire to secure oil filter housing to engine.
NOTE-
Do not disconnect oil lines from filter housing.
4
Disconnect supply and return fuel lines (where applicable) at
or near fuel rail. Plug open fuel lines.
NOTE-
BMW uses three styles of fuel line connections; a slngle use
clamp, a locking fitting that uses special tool 16 7 050 to re-
lease, and a quiclc release sleeve (arrows) that disconnects
the line when depressed.
WARNING-
Fuel In fuel line is under pressure (approx. 3
-
5 bar or45
-
75 psi) and may be expelled. Do not smoke or worlc near
heaters or other fire hazards. Keep a fire extinguisher
handy. Before disconnecting fuel hoses, wrap a cloth
around fuel hoses to absorb any lealcing fuel. Catch and
dispose of escaped fuel. Plug all open fuel lines.
.
Always unscrew the fuel tank cap to release pressure
in the tank before worlcing on the tank or lines.
<
Remove air filter housing and mass air flow sensor:
Disconnect mass air flow sensor ( A ) and intalte air temper-
ature sensor ( 6 ) electrical harness connectors.
.
Remove air filter housing mounting fastener (arrow).
Loosen intake hose clamp (C).
M62 engine: Remove hose at idle air stabilizer.
Remove air filter housing with mass air flow sensor.
Remove intalte hose from throttle body.