27 21 040 Replacing radial shaft seal for actuator shaft (ATC 450)

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Special tools required:

11 1 200
11 1 380
23 0 490

IMPORTANT: Read and comply with notes on protection against electrostatic discharge (ESD protection).
After completion of the repair work, CHECK TRANSMISSION OIL LEVEL and top up if necessary.
Use only the approved TRANSMISSION OIL .

Necessary preliminary tasks:

Disconnect NEGATIVE BATTERY CABLE
Remove CROSS MEMBER .

Disconnect connector (1).

Release screws (2) and remove transfer box from control unit (longitudinal torque module) (3).

Tightening torque 27 10 3AZ .

Fig 1: Identifying VTG Control Unit, Connector And Screws

G09921697

Courtesy of BMW OF NORTH AMERICA, INC.

Screw special tool 23 0 490 into radial shaft seal.

Drive out radial shaft seal (1) with impact weight (2).

Fig 2: Removing Radial Shaft Seal

G08504531

Courtesy of BMW OF NORTH AMERICA, INC.

Push the assembly sleeve 11 1 380 over the actuator shaft.

IMPORTANT: Nonobservance involves a risk of damage to the radial shaft seal.

Fig 3: Identifying Special Tool (11 1 380)

G08504532

Courtesy of BMW OF NORTH AMERICA, INC.

Slide the new radial shaft seal (1) over the assembly sleeve (2) onto the actuator shaft.

Fig 4: Sliding Radial Shaft Seal Over Assembly Sleeve Onto Actuator Shaft

G08504533

Courtesy of BMW OF NORTH AMERICA, INC.

Drive radial shaft seal fully home using special tool 11 1 200 and plastic hammer.

Remove the assembly sleeve.

Fig 5: Installing Radial Shaft Seal

G08504534

Courtesy of BMW OF NORTH AMERICA, INC.