Special tools required

WARNING: This page is about a different car, the 2010 BMW 650i, 2009 BMW 650i, 2008 BMW 650i, 2007 BMW 650i, and 2006 BMW 650i. However, it is still accessible from the selected car via links, so may be relevant.

IMPORTANT: Before working on hydraulic system:

Reduce pressure in hydraulic system by means of Service Function in DIS Tester (BMW scan tool)
Disconnect HYDRAULIC PUMP RELAY in electronics box

Do not reconnect relay for entire duration of repair work

NOTE: After completing work:

Check fluid level in hydraulic system. See 21 53... CHECKING/TOPPING UP FLUID LEVEL IN HYDRAULIC SYSTEM (GS6S37BZ/GS6S53BZ/ SMG)
Perform "Teach in transmission" service function by means of DIS Tester (BMW scan tool)

Mount transmission (1) with special tool 23 0 170 in assembly stand.

Fig 1: Mounting Transmission Using Special Tool (23 0 170)

G04748929

Courtesy of BMW OF NORTH AMERICA, INC.

Remove sealing cap (1) using a screwdriver (2).

Service opening must not be damaged.

Burr can cause the sealing cap to leak.

Installation:

Replace sealing cap.

Fig 2: Removing Sealing Cap Using Screwdriver

G04759317

Courtesy of BMW OF NORTH AMERICA, INC.

Release fitting screw (1).

Tightening torque 23 31 3AZ .

Installation:

Replace fitting screw.

Fig 3: Identifying Screw

G04759318

Courtesy of BMW OF NORTH AMERICA, INC.

Remove screws (1) and (2).

Tightening torque 23 41 1/7AZ .

Pull out shift actuator (4)

Do not detach hydraulic line (3).

Installation:

Clean sealing surfaces.

Apply Loctite 574 sealing compound to sealing faces.

Fig 4: Identifying Shift Actuator With Screws And Hydraulic Line

G04759319

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and detach from holder.

Release screws (2).

Tightening torque 23 41 7AZ .

Fig 5: Identifying Plug And Screws

G04759326

Courtesy of BMW OF NORTH AMERICA, INC.

Unlock plug (1) and detach from holder.

Release screws (2).

Tightening torque, see 21 52 5AZ in 21 52 CLUTCH OPERATION (HYDRAULIC) .

Fig 6: Identifying Plug And Screws

G04759327

Courtesy of BMW OF NORTH AMERICA, INC.

Release screw (1).

Tightening torque 23 41 7AZ .

Installation:

Make sure retainer (2) for heat shield is correctly positioned.

Fig 7: Identifying Retainer And Screw

G04759328

Courtesy of BMW OF NORTH AMERICA, INC.

Release screws (1) and (2).

Tightening torque 23 41 7AZ .

Fig 8: Identifying Screws

G04759329

Courtesy of BMW OF NORTH AMERICA, INC.

Release M8 screws (1) and M6 screws (2).

Tightening torque 23 41 7AZ .

Tightening torque 23 41 8AZ .

Remove hydraulic unit.

Fig 9: Identifying M8 Screws And M6 Screws

G04759330

Courtesy of BMW OF NORTH AMERICA, INC.