26 11 052 Replacing flexible disc for rear propeller shaft

WARNING: This page does not describe the selected car, but rather 31 other vehicles, including the 2015 BMW Alpina B7L, 2015 BMW Alpina B7, 2015 BMW 750i, 2015 BMW 750Li, and 2015 BMW 740i. However, it is still accessible from the selected car via links, so may be relevant.

Necessary preliminary work:

Remove EXHAUST SYSTEM

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: Marking Three-Hole Flange, Flexible Disc And Propeller Shaft In One Plane

Courtesy of BMW OF NORTH AMERICA, INC.

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

Tightening torque and angle of rotation: 26 11 4AZ .

Installation note:

IMPORTANT: Replace ZNS bolts and self-locking nuts.

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

Fig 2: Locating Flexible Disc Screws
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 Propeller Shaft Centering Mount

Courtesy of BMW OF NORTH AMERICA, INC.