33 41 000 Replacing drive flange on left/right rear axle shaft

Special tools required: 

• 34 4 000

Necessary preliminary tasks: 

• Remove REAR WHEEL .

If necessary, remove visual protection cap (1).

Fig 1: Removing Visual Protection Cap

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Activate parking brake and release collar nut.

Tightening torque 33 41 1AZ .

Installation note: 

Lightly oil the gearing at the shaft journal.

No oil permitted on thread of shaft journal or collar nut.

Replace the collar nut and secure it by positive peening on flat areas of output shaft.

• Remove BRAKE DISC .

Fig 2: Releasing Collar Nut

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Twist roll pins (1) 90° with special tool 34 4 000 and detach.

Only disconnect return spring (2) with brake spring pliers.

Remove brake pads (3).

Use the special tool from the BMW workshop catalogue. 

• Hydraulic unit - 81 64 2 155 744
• Adapter kit 1 - 81 64 2 155 745
• Adapter kit 2 - 81 64 2 155 746

Fig 3: Identifying Brake Pads, Return Spring And Roll Pins

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The following work steps describe detachment of the drive flange: 

The following tools are required to pull the drive flange out of the wheel bearing. For arrangement, see Fig 4:

• Vehicle components:

  I	Drive flange
  II	Wheel carrier/swivel bearing

• Required components for all models and types:

  E3	Washer
  B1	Adapter
  E1	Holding sleeveM24
  F1	Spindle M24 (length 425 mm)
  1	Hydraulic unit
  A1	Device

• Components specific to model and type:

  M1	Adapter diameter 100/101 mm
  M2	Adapter diameter 88 mm
  M3	Adapter diameter 102 mm
  M4	Adapter diameter 96 mm
  M5	Adapter diameter 90 mm
  M6	Adapter diameter 102/113 mm
  K1	Screws M12 x 1.5
  K2	Screws M14 x 1.5

• Pull out drive flange using the hydraulic tool.
  IMPORTANT: Wheel bearing will be destroyed by being pulled out of the drive flange and must be replaced!

Fig 4: Detaching Drive Flange Using Special Tools

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The following work steps describe pulling in the drive flange: 

Installation note: 

The drive flange and output shaft can be installed in the wheel bearing in one operation.

The following tools are required to pull the drive flange in. For arrangement, see Fig 5:

• Vehicle components:

  I	Drive flange hub
  II	Wheel carrier/swivel bearing
  III	Output shaft

• Required components for all models and types:

  1	Hydraulic unit
  E1	Holding sleeveM24
  D1	Washer
  F2	Spindle M24/M20 (length 335 mm)

• Components specific to model and type:

  G1	Adapter M22 x 1.5 to M20
  G2	Adapter M24 x 1.5 to M20
  G3	Adapter M27 x 1.5 to M20

Fig 5: Pulling Drive Flange Using Special Tools

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Fit adapter with torque wrench to hydraulic unit (see Fig 6).

Set torque wrench to 20 Nm.

Oil drive flange lightly and attach to the output shaft gearing.

Pull in drive flange with hydraulic tool until torque wrench triggers.

Fig 6: Fitting Adapter And Torque Wrench To Hydraulic Unit

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Install PARKING BRAKE SHOES

Install BRAKE DISC .

Activate parking brake and tighten collar nut.

Tightening torque 33 41 1AZ .

Installation note: 

Replace collar nut.

No oil permitted on thread of shaft journal or collar nut.

Secure collar nut by positive peening on flat areas of output shaft.

Fig 7: Identifying Parking Brake Shoes, Brake Disc And Collar Nut

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After installation: 

• Adjust PARKING BRAKE .