33 10 016/17 Removing and installing/renewing rear axle final drive (Dynamic Performance Control)

Special tools required: 

• 23 4 050
• 33 0 110
• 33 5 206

Necessary preliminary tasks: 

• Remove exhaust system. See 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N63) , 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (M57T2) , or 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N55) .
• Remove PROPELLER SHAFT AT FINAL DRIVE .

Release screws (1) from output shaft (2).

Installation note: 

• Screws (1) and shims must be replaced!

Tightening torque 33 21 1AZ .

Fig 1: Identifying Output Shaft And Screws

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Tape off output shafts or place a cloth on swinging arm.

Fig 2: Identifying Swinging Arms Area

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Release screws (1) and remove heat shield (2).

Installation note: 

Clean screw threads to remove all remnants of screw locking adhesive.

Check threads on rear differential for damage and, if necessary, repair with HELICOIL THREAD INSERTS .

Make sure wiring harness (3) is correctly seated on rear differential.

Fig 3: Identifying Heat Shield, Wiring Harness And Screws

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Stick in new screws.

Tightening torque 33 11 4AZ .

Position special tool 33 0 110 in combination with 23 4 050 on workshop jack (1).

Fig 4: Positioning Special Tool (33 0 110 And 23 4 050) On Workshop Lifter

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Support rear axle final drive with the prepared special tool 23 4 050 .

Lash rear axle final drive with the tensioning strap 33 5 206 .

Fig 5: Supporting Rear Axle Final Drive

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Disconnect plug connections (1) on rear axle final drive.

Unfasten ground strap (2).

Fig 6: Identifying Plug Connections And Ground Strap

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Release screw (1).

Tightening torque 33 17 1AZ .

Fig 7: Identifying Screw

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Installation note: 

Adhere to the installation sequence at the end of the information in order to prevent distortion of the rear axle final drive during installation and thereby avoid potential complaints about noise.

Release rear bolt (1).

Tightening torque 33 17 2AZ .

Slowly lower rear differential using workshop lifter.

Fig 8: Identifying Rear Bolt

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Assembly sequence: 

1. Install rear axle final drive with workshop jack and special tool 23 4 050 in rear axle support
2. Insert bolts (1) (do not tighten down)
3. Insert bolt (2) from rear (do not tighten down)
4. Release tensioning strap, lower special tool 23 4 050 and move away
5. Tighten down screws (1)

   Tightening torque 33 17 1AZ

   Fig 9: Identifying Rear Differential Screws And Nut

   Courtesy of BMW OF NORTH AMERICA, INC.
6. Tighten down screw (2)

Tightening torque 33 17 2AZ

After installation: 

• Check final drive oil level  . See 00 11 259 CHANGING OIL IN REAR AXLE FINAL DRIVE (DYNAMIC PERFORMANCE CONTROL) AND DISPOSING OF USED OIL or 00 11... CHECKING/TOPPING UP OIL LEVEL IN REAR AXLE FINAL DRIVE (DYNAMIC PERFORMANCE CONTROL) , correct if necessary.

Replacement only:

• With BMW Diagnosis and Information System under:
  • Control unit functions

    Perform function check of transfer box (calibration)