31 21 090 Replacing left/right swivel bearing

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Special tools required:

31 2 230

Fig 1: Part Number On Swivel Bearing

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NOTE: When replacing swivel bearing pay attention to camber correction swivel bearings.
Camber correction swivel bearing are used to correct the camber values by ±30 minutes. To be used only if the camber tolerance values are exceeded and undershot.
Identification is made at the PART NUMBER ON SWIVEL BEARING .

Necessary preliminary work:

Remove WHEEL BEARING .
Remove PULSE SENSOR FROM SWIVEL BEARING .

IMPORTANT: Prior to installation, check sensor head and cable from pulse sensor and replace if necessary.

Removal:

Fig 2: Brake Guard Plate And Screws

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Loosen screws (1).

Remove brake guard plate (2).

Slacken nut (1).

Release track rod (2) from swivel bearing.

Fig 3: Track Rod And Slacken Nut

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Fig 4: Wishbone, Screw And Nut

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Slacken nut (1).

Pull out screw (2).

Release wishbone (3) from swivel bearing.

If necessary, release brake pad wear sensor from holder (3).

Secure swivel bearing against falling out.

Slacken nut (1).

Pull out screw (2).

Take off holder (3).

Fig 5: Holder, Slacken Nut And Screw

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Fig 6: Removing Swivel Bearing With Special Tool (31 2 230)

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Expand swivel bearing with special tool 31 2 230 .

Remove swivel bearing.

Installation:

Keep press fit of swivel bearing and spring strut in lower area clean and free from oil and grease.

Expand swivel bearing with special tool 31 2 230 .

Fig 7: Sliding Swivel Bearing

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Alight gap on swivel bearing (1) to positioning pin (2) on spring strut.

Slide on swivel bearing to limit position.

Fig 8: Holder, Slacken Nut And Screw

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Position holder (3).

Part: Replace nut (2) and bolt (1).

Insert bolt (2).

Tighten nut (1).

Tightening torque 31 31 3AZ .

Installation note:

Bolt head points in direction of travel.

Join wishbone (3) to swivel bearing.

Part: Replace nut (2) and bolt (1).

Insert screw (2) with washer.

IMPORTANT: The washer must lie between the screw head and the swivel bearing.
Note insertion direction of bolt (2). The screw (2) is inserted from the rear in the direction of travel.

Fig 9: Wishbone, Screw And Nut

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Screw on the nut (1).

Tighten screw connection.

Tightening is done via screw (2).

Tightening torque 31 12 1AZ .

Fig 10: Track Rod And Slacken Nut

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Joint track rod (2) to swivel bearing.

Part: Replace nut (1).

Tighten nut (1).

Tightening torque 32 21 1AZ .

Position brake guard plate (2) on swivel bearing.

Fig 11: Brake Guard Plate And Screws

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Tighten down screws (1).

Tightening torque 31 11 4AZ .

Required follow-up work:

Install WHEEL BEARING .
Install PULSE SENSOR ON SWIVEL BEARING .
Carry out wheel alignment procedure. See ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or ALIGNMENT CHECK WITH RIDE HEIGHT MEASUREMENT (WITHOUT VEHICLE LOAD) .