13 54 045 Removing and installing/sealing a throttle valve assembly (S65)

Necessary preliminary tasks: 

• Read out fault memory of DME control unit
• Switch off ignition
• Follow instructions on connecting and disconnecting battery  . See 12 00 ... INSTRUCTIONS FOR DISCONNECTING AND CONNECTING BATTERY .
• Disconnect battery negative lead  and cover. See 61 20 900 DISCONNECTING AND CONNECTING BATTERY NEGATIVE LEAD .
• Remove intake air manifold  . See 11 61 050 REMOVING AND INSTALLING AIR INTAKE MANIFOLD (S65) .
• Remove all injectors  
• Release and raise cable duct for engine wiring harness; to do so, partially remove engine wiring harness.  See 12 51 001 REPLACING WIRING HARNESS SECTION FOR ENGINE (S65) .
• Disengage pull rods of throttle valve actuating motor.

Release all nuts of throttle valve flanges.

Release idle air hose connection.

Lift out throttle valve bank.

Fig 1: Locating Throttle Valve Flanges Nuts

Courtesy of BMW OF NORTH AMERICA, INC.

Release idle air duct on throttle valve bank.

Fig 2: Identifying Idle Air Duct And Throttle Valve Bank

Courtesy of BMW OF NORTH AMERICA, INC.

Release all screw connections on shaft (1).

Grip screws, release nuts only. Replace screws and nuts (3).

Installation: 

Actuating lever (2) of throttle valve actuating motor is offset by 180° to throttle valve actuating levers.

Fig 3: Identifying Actuating Shaft, Actuating Lever And Screw Connections

Courtesy of BMW OF NORTH AMERICA, INC.

Mounting sequence of actuating levers, bank 1

1. Levers for throttle valves
2. Lever from actuator motor

Fig 4: Identifying Throttle Valves And Actuator Motor

Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Clean sealing surfaces on cylinder head.

Replace O-rings (1) on cylinder head.

Check adapter sleeves on throttle valves.

Fig 5: Identifying Cylinder Head O-Rings

Courtesy of BMW OF NORTH AMERICA, INC.