26 11 052 Replacing flexible disc for rear propeller shaft (N55, N52T, N63, N57 D30 0 1, S63 B44 T 0, N20, N55 Hybrid, N57 D30 O/T 1 W/SCR)

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Necessary preliminary tasks:

Remove exhaust system. Refer to:
For N55: 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N55) .

For N52T: 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N52T) .

For N63: 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N63) .

For N57 D30 0 1: 18 00 018 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N57 D30 O 1) .

For S63 B44 T 0: 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (S63 B44 T 0) .

For N20: 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N20) .

For N55 Hybrid: 18 00 020 REMOVING AND INSTALLING COMPLETE EXHAUST SYSTEM (N55 HYBRID) .

For N57 D30 O/T 1 W/ SCR: 18 00 018 COMPLETELY REMOVE AND INSTALL THE EXHAUST SYSTEM (N57 D30 O/T 1 WITH SCR) .

NOTE: To protect universal joints, tie back propeller shaft in area of center mount.

IMPORTANT: Before removing propeller shaft:
The three-hole flange to the rear axle final drive is balanced with the propeller shaft.
The three-hole flange and propeller shaft must be reassembled in the same position.
Mark three-hole flange (1), flexible disc (2) and propeller shaft (3) in one plane.

Fig 1: Identifying Three-Hole Flange, Flexible Disc And Propeller Shaft

Courtesy of BMW OF NORTH AMERICA, INC.

Release propeller shaft from thee-hole flange and center mount.

Installation note:

Replace ZNS bolts and self-locking nuts.

Tightening torque: 26 11 3/5AZ .

Release screws and remove flexible disc (1) from propeller shaft.

Tightening torque and angle of rotation 26 11 4AZ .

IMPORTANT: Replace ZNS bolts and self-locking nuts.

Installation note:

During installation arrows (2) on circumference of flexible disc must point to flange arms (3).

Fig 2: Locating Screws Of Flexible Disc
Courtesy of BMW OF NORTH AMERICA, INC.

Installation note:

Check centering mount.

Replace damaged CENTERING MOUNT .

IMPORTANT: Plastic centering mount must not be greased.

Fig 3: Locating Centering Mount

Courtesy of BMW OF NORTH AMERICA, INC.