26 11 000 Removing and Installing Complete Propeller Shaft (Constant-Velocity Joint)

26 11 000 Removing and installing complete propeller shaft (constant-velocity joint)







IMPORTANT:
The rear axle final drive of the M Coupe is balanced.
Therefore, the following points must be observed.
Non-compliance can lead to humming noises.







M Coupes with marked rear axle final drive on outside of drive flange (colour dot) (1):
- white dot (1): no measures required
- blue dot (1): Measures absolutely required
- yellow dot (1): Measures absolutely required







The colour dot on the exterior of the drive flange is assigned to the respective bolting point and means that the corresponding measure must be installed here.







- Yellow mark (1) - install green shiny bolt (2)
- Blue mark (1) - install black bolt (2)







Necessary preliminary tasks:
- Remove rear underbody protection
- Remove complete exhaust system
- Remove heat shields







IMPORTANT:
To avoid buzzing sound after refitting the propeller shaft:
1. The flexible disc connection (1) on the front at the propeller shaft must be marked in one plane with the flexible disc (2) and the three-bolt flange (3) before removal.
2. During installation the three bolt flange (3) must be forced back together again with the flexible disc (2) in the same position.







Release screws.

Installation note:
ZNS bolts and nuts must be replaced
Replace self-locking nuts.

Tightening torque, 26 11 1AZ.






Release screws.
Replace screws and shims.







With a screwdriver, press constant-velocity joint (at the disassembly grooves) off input flange.







IMPORTANT:
Do not let propeller shaft fall into joints.
Joints and rubber sleeve on constant velocity joint can be damaged.







Hold down propeller shaft on centre mount and release screws (1).
Tightening torque, 26 11 6AZ.

IMPORTANT: Centre mount can be installed in two directions. The "TOP" label on the centre mount must be face the body.







Bend propeller shaft downwards on centre bearing.
Remove propeller shaft from transmission output flange and remove constant-velocity joint from rear axle differential.







Installation note:
Pull out constant velocity joint (1), up to limit position.
Install shim.
With constant velocity joint pulled apart, attach propeller shaft to drive flange of rear axle final drive.

Alternately tighten 2 opposing screws to draw constant-velocity joint evenly into the input flange.
Replace ZNS bolts and shims.
Tightening torque, 26 11 4AZ.







Installation note:
Check centring mount (4).

Replace damaged centring mount.
Grease centring mount.
Grease, refer to BMW Service Operating Fluids.

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