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26 11 000 Completely removing and installing propeller shaft (inserted - rear flexible disc) (without vibration absorber)

Special tools required: 

IMPORTANT: On four-wheel drive vehicles with defective, non-engaging drive, it is imperative that the following information is taken account of. 
  • Additional work when replacing the propeller shaft.
IMPORTANT: The three-hole flange to the rear axle differential is balanced with the flexible disc and propeller shaft.
Three-hole flange, flexible disc and propeller shaft may not  be disassembled.
The propeller shaft may only  be released at the sunk nut at the rear.
The sunk nut must be opened against direction of travel in clockwise direction. 
Replacement of the sunk nut on the rear axle differential is mandatory  !
The sunk nut already has a screw locking.
After the propeller shaft has been screwed into the rear axle final drive (sunk nut), a hardening time of at least 2 hours  is absolutely necessary.
The hardening time may be extended at lower temperatures!
Failure to comply with these instructions may cause serious damage!

Necessary preliminary tasks: 

IMPORTANT: Adhere without fail to the installation and bolt-tightening sequence.
Installation sequence:
  1. Join propeller shaft to transmission
  2. Join propeller shaft to rear axle final drive
  3. Join center mount

Screw-fastening sequence:
  1. Flexible disc to transmission
  2. Three-hole flange on rear axle differential
  3. Center mount
IMPORTANT: To avoid buzzing sound after refitting the propeller shaft:
  1. The flexible disc connection (1) on front and rear of propeller shaft must  be marked in one plane before releasing with flexible disc (2) and three-bolt flange (3).
  2. During installation the three-bolt flange (3) must be forced back together again with the flexible disc (2) in the same position.
  3. Replace ZNS bolts and self-locking nuts.
Fig 1: Identifying Disc Connection, Disc And Three-Bolt Flange
G08488082Courtesy of BMW OF NORTH AMERICA, INC.

Release screws.

Installation note: 

NOTE: Instead of conventional rubber flexible disks, F series also use aluminum flexible discs, which are also called EGG (constant velocity joints).
Fig 3: Identifying EGG (Constant Velocity Joints) Components
G08488085Courtesy of BMW OF NORTH AMERICA, INC.

Installation note: 

Check centering mount.

If necessary, replace damaged CENTER BEARING .

Grease centering mount.

Installation note: 

Tighten down screws/bolts to specified torque.

Secure angle of rotation special tool 00 9 120 with magnets 00 9 130 to vehicle underbody and screw down further according to angle of rotation.

Tightening torque 26 11 1AZ .

Fig 5: Checking Angle Of Rotation With Special Tool (00 9 120)
G04751857Courtesy of BMW OF NORTH AMERICA, INC.

Slacken screws (1)

Tightening torque 26 11 5AZ .

Using a suitable tool (2), secure propeller shaft at center universal joint against turning.

Remove screws of center mount fully only after opening insert nut.

Fig 6: Removing Center Mount Screws
G04794211Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: The bi-hexagonal flange nut (1) must not be used for counter-hold. 
Failure to comply with this instruction may result in serious damage to the rear axle final drive.
IMPORTANT: The sunk nut must be opened against direction of travel in clockwise direction. 
If an attempt is made to open the sunk nut in direction of travel in clockwise direction, the sunk nut is automatically screwed in further and the insert collar of the 12-edge flange nut is severely damaged.
If the insert collar of the flange nut was damaged, the propeller shaft can no longer  be secured using a new sunk nut and the rear axle differential must be replaced.
Fig 7: Releasing Insert Nut Clockwise With Special Tool (33 5 070)
G08488092Courtesy of BMW OF NORTH AMERICA, INC.

Release insert nut against direction of travel in clockwise direction  with special tool 33 5 070 and 33 0 080.

Tightening torque 26 11 6AZ .

Remove retaining clip (1) and gasket (2).

Installation note: 

Retaining clip and gasket must be replaced.

Fig 8: Identifying Retaining Clip And Gasket
G04794213Courtesy of BMW OF NORTH AMERICA, INC.

Remove insert nut (1).

Installation note: 

Insert nut must be replaced.

The sunk nut is equipped with a screw locking.

Prior to the first journey, a minimum hardening time of 2 hours  must be complied with.

Failure to comply with these instructions may cause serious damage!

Fig 9: Identifying Insert Nut
G04794214Courtesy of BMW OF NORTH AMERICA, INC.

Before installing propeller shaft:

Clean insert collar (1) on flange nut and gearing on bevel pinion (2).

Fill insert collar (1) with grease.

Grease: BMW Service OPERATING FLUIDS .

Fig 10: Identifying Insert Collar And Bevel Pinion
G04794215Courtesy of BMW OF NORTH AMERICA, INC.

Clean thread (1) of joint hub to remove adhesive residues.

Clean hub teeth (2), then coat with grease.

Grease: BMW Service OPERATING FLUIDS .

IMPORTANT: Thread of joint hub must not  be fouled with grease.
Fig 11: Identifying Thread And Hub Teeth
G04794216Courtesy of BMW OF NORTH AMERICA, INC.

Place flange nut (1) with gasket in insert collar of flange nut.

Install retaining clip (2).

Fig 12: Identifying Flange Nut And Retaining Clip
G04794217Courtesy of BMW OF NORTH AMERICA, INC.
IMPORTANT: Adhere without fail to the installation and bolt-tightening sequence.
Installation sequence:
  1. Join propeller shaft to transmission
  2. Join propeller shaft to rear axle final drive
  3. Join center mount

Screw-fastening sequence:
  1. Insert nut
  2. Flexible disc to transmission
  3. Center mount
IMPORTANT: The bi-hexagonal flange nut (2) must not be used for bracing. 
Failure to comply with this instruction may result in serious damage to the rear axle final drive.
Insert nut must be screwed into place within 5 minutes  .

Slide propeller shaft (1) to the limit position onto insert nut and secure.

Fig 13: Sliding Propeller Shaft Onto Insert Nut
G08488098Courtesy of BMW OF NORTH AMERICA, INC.

Secure propeller shaft at center universal joint with a suitable tool against turning.

Tightening torque 26 11 6AZ .

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