BMW 7 Series: Replacing Center Mount Gaiter

Necessary preliminary work

• Remove PROPELLER SHAFT.

NOTE: The propeller shaft is balanced.

Detach gaiter (1) from groove (2).

Mark front propeller shaft (3) and rear propeller shaft (4) in one plane.

Fig. 25: Marking Front Propeller Shaft And Rear Propeller Shaft In One Plane

Pull apart propeller shaft.

Fig. 26

Installation note: If necessary, insert new clamping ring (1) into front propeller shaft (2).

Fig. 27: Identifying Front Propeller Shaft With Clamping Ring

Release gaiter (1) with screwdriver from groove (2) and pull off over longitudinal splines.

Installation note: Apply an even coating of grease to longitudinal splines on shaft.

Observe markings and force front propeller shaft onto longitudinal splines (markings must be flush).

Push gaiter (1) during installation into groove (2) and make sure it is firmly fitted.

Fig. 28: Identifying Gaiter And Groove

REPLACING FLEXIBLE DISC FOR FRONT PROPELLER SHAFT

Necessary preliminary work

• Remove PROPELLER SHAFT at transmission and center bearing.

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

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

IMPORTANT: Replace ZNS bolts and self-locking nuts.

Tightening torque and angle of rotation, see 26 11 2AZ under PROPELLER SHAFT COMPLETE.

Installation note:

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

Fig. 29: Locating Screws Of Flexible Disc

Installation note:

Check centering mount.

Replace damaged CENTERING MOUNT.

Grease centering mount. See DRIVESHAFT - OPERATING FLUIDS.

Fig. 30: Locating Propeller Shaft Centering Mount

REPLACING FLEXIBLE DISC FOR REAR PROPELLER SHAFT

Necessary preliminary work

• Remove PROPELLER SHAFT from rear axle final drive and center mount

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.

Mark three-hole flange (1), flexible disc (2) and propeller shaft (3) in one plane.

Fig. 31: Marking Three-Hole Flange, Flexible Disc And Propeller Shaft In One Plane

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

IMPORTANT: Replace ZNS bolts and self-locking nuts.

Tightening torque and angle of rotation, see 26 11 4AZ under PROPELLER SHAFT. COMPLETE.

Installation note:

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

Fig. 32: Locating Flexible Disc Screws

Installation note: Check centering mount.

Replace damaged CENTERING MOUNT.

IMPORTANT: Plastic centering mount must not be greased.

Fig. 33: Locating Propeller Shaft Centering Mount

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