26 11 000 Removing and installing complete propeller shaft (constant-velocity joint)
Necessary preliminary tasks:
- Remove rear underbody protection.
- Remove complete EXHAUST SYSTEM .
Remove heat shields (1) and (2).
- Remove transmission cross-member . See REPLACING CROSS-MEMBER FOR TRANSMISSION MOUNTING (MANUAL) or REPLACING CROSS-MEMBER FOR TRANSMISSION MOUNTING (AUTOMATIC)
Remove transmission support block.
Tightening torque 23 71 4AZ .
To avoid buzzing sound after refitting the propeller shaft:
- 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.
- During installation the three-bolt flange (3) must be forced back together again with the flexible disc (2) in the same position.
- Replace ZNS bolts and self-locking nuts.
Release screws.
Installation:
ZNS bolts and nuts must be replaced.
Replace self-locking nuts.
The bolt without washer may only be tightened by means of the nut.
The bolt with rolled-on washer which has ribbed teeth facing the support side must be tightened by means of the bolt.
Observe different tightening torques.
Tightening torque, 26 11 1AZ .
Release bolts and replace.
Using a screwdriver, press constant velocity joint off drive flange at disassembly grooves.
Joints and rubber sleeve can be damaged on constant-velocity joint.
Grip propeller shaft at center bearing and release screws.
Tightening torque, 26 11 6AZ .
Bend propeller shaft downwards at center bearing.
Remove propeller shaft from transmission output flange and detach constant-velocity joint from rear axle differential.
Installation:
Withdraw constant-velocity joint (1) up to stop.
Fit shims.
Attach propeller shaft with pulled-apart constant-velocity joint to drive flange of rear differential.
Alternately tighten 2 opposing screws to draw constant-velocity joint evenly into the input flange.
Replace ZNS bolts.
Tightening torque, 26 11 4AZ
Installation:
Check centering mount (4).
Replace damaged centering mount . See REMOVING AND INSTALLING/REPLACING CENTERING MOUNT FOR PROPELLER SHAFT
Grease centering mount.
Installation:
The aluminium propeller shaft contains a crash element.
Check the crash element before installing the propeller shaft.
Replace the propeller shaft if the crash element has been pushed together.
- Deformation travel approx. 100 mm
- Aluminium tubing
- Bearing journal
Propeller shafts: refer to TECHNICAL DATA .