11 61 068 Removing and installing/replacing air intake manifold (N74)

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Necessary preliminary tasks:

Remove throttle. See LEFT THROTTLE VALVE ASSEMBLY and RIGHT THROTTLE BODY .
Remove intercooler. See RIGHT INTERCOOLER and LEFT INTERCOOLER .
Remove vacuum reservoir.

Disengage engine ventilation (3) at terminals (1 and 2).

Fig 1: Identifying Engine Ventilation At Terminals

G08469512

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Fig 2: Identifying Air Intake Manifold Screw

G08469513

Courtesy of BMW OF NORTH AMERICA, INC.

Release bolt (1) at rear of intake plenum.

Fig 3: Identifying Intake Plenum Bolt

G08469514

Courtesy of BMW OF NORTH AMERICA, INC.

Disconnect plug connection (1 and 2) at charge-air pressure sensor.

Fig 4: Identifying Charge-Air Pressure Sensor Plug Connection

G08469515

Courtesy of BMW OF NORTH AMERICA, INC.

Release all bolts (1) on intake plenum using special tool 11 4 410 .

Tightening torque: see 2AZ in 11 61 INTAKE PLENUM

Fig 5: Releasing Bolts On Intake Plenum Using Special Tool 11 4 410

G08469516

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

Replace all sealing rings (1) on intake lines.

Fig 6: Identifying Sealing Ring On Intake Lines

G08469517

Courtesy of BMW OF NORTH AMERICA, INC.

Assemble engine and vehicle.

Check air intake system for leaks.