11 65 300 Removing and installing/replacing the electrical actuator drive for the wastegate

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Check function of DME
- Service functions
- Power train
- Engine electronics
- Adjustment functions
- Adjusting wastegate linkage
Wastegate valve actuator
The adjusting nuts must be locked using two open-end spanners. If only one open-end spanner is used, there is a risk of the electrical controller drive being damaged.
- Loosen lock nut (1).
Remove wastegate valve linkage (3) from the drive linkage.

Unscrew adjusting nut (2).

Fig 1: Identifying Wastegate Valve Linkage, Lock And Adjusting Nuts
Courtesy of BMW OF NORTH AMERICA, INC.
Screw connection of the wastegate valve controller
- Loosen screws (1).
- Remove the electrical controller drive (2).
Fig 2: Identifying Electrical Controller Drive And Screws
Courtesy of BMW OF NORTH AMERICA, INC.
View of the wastegate valve controller
- Schematic view shows the controller drive of the wastegate valve.
Electrical wastegate valve controller (1) on the exhaust turbocharger.

Adjusting nut(2)

Lock nut(3)

Wastegate valve linkage (4)

Fig 3: Identifying Wastegate Valve Controller, Wastegate Valve Linkage And Nuts
Courtesy of BMW OF NORTH AMERICA, INC.
Screwing on the wastegate valve actuator
- Position the electrical wastegate valve controller (2) on the exhaust turbocharger.
Secure the electrical wastegate valve controller with screws (1) using special tool 0 495 018 (11 4 350) .
WASTEGATE VALVE CONTROLLER AND EXHAUST TURBOCHARGER SCREWS TIGHTENING TORQUE SPECIFICATION

M4x12 2 ± 0, 3 Nm

Fig 4: Identifying Electrical Controller Drive And Screws
Courtesy of BMW OF NORTH AMERICA, INC.
Screw the wastegate valve controller to the linkage on the exhaust turbocharger
The adjusting nuts must be locked using two open-end spanners. If only one open-end spanner is used, there is a risk of the electrical controller drive being damaged.
- Screw in the adjusting nut (1) on the electrical wastegate valve actuator until the limit position.
Fig 5: Positioning Wastegate Linkage Onto Electrical Wastegate Valve Controller
Courtesy of BMW OF NORTH AMERICA, INC.

Position the wastegate linkage on the electrical wastegate valve controller (see arrow).

Close flap linkage by hand, tighten adjusting nut (1) on the linkage until it makes contact.

Secure lock nut (2).
EXHAUST TURBOCHARGER AND WASTEGATE VALVE CONTROLLER LOCK NUT TIGHTENING TORQUE SPECIFICATION

M6 6, 6 ± 1 Nm
Wastegate valve actuator
- Shorten adjustment travel (-).
Increase adjustment travel (+).

To ensure a reliable setting of the adjustment travel, both adjusting nuts must be marked with a colored mark.

One full turn of the adjusting nut (2) corresponds to an adjustment travel of 0.75 mm.

Example 1: Actual value measured by the diagnostic function: 0.75 mm .

Required correction: +0.75 mm divided by 0.75 mm= +1.0 revolutions.

Fig 6: Adjusting Electrical Actuator Drive Nuts Using Open-End Spanners
Courtesy of BMW OF NORTH AMERICA, INC.

For the correction of the linkage setting, adjust the nut (1) in the plus (+) direction by 1.0 revolution and then reset the nut (2) with 6.6 Nm

Example 2: Actual value measured by the diagnostic function: -1.5 mm .

Required correction: -1.5 mm divided by 0.75 mm= -2.0 revolutions.

For the correction of the linkage setting, adjust the nut (2) in the negative (-) direction by 2.0 revolutions and then tighten the nut (1) with 6.6 Nm.

Check basic setting again through diagnosis.