Removing and installing complete left or right trailing arm (FWD) (X2 sDrive 28i 2018-2023)

Necessary preliminary work: 

• Refer to REMOVING COIL SPRING .

Removal: 

Release screw (1).

Detach wheel speed sensor (2) from the trailing arm and put to one side.

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Unfasten screws (1).

Take off brake caliper (2) with holder and tie back.

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Unclip brake line (1) from holder (2) on trailing arm.

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Release nut and remove screws (1).

Mark position of eccentric adjustment washer to trailing arm to simplify subsequent adjustment of rear axle.

Slacken nut (2).

Remove eccentric washer and unscrew screw.

Installation note: 

Tighten screw connection (2) in NORMAL POSITION .

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Undo screws (1) on trailing arm bearing support on the body.

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Remove trailing arm (1) with trailing arm bearing support.

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Installation: 

Position trailing arm (1) with trailing arm bearing support at the vehicle.

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Tighten screws (1) on trailing arm bearing support on the body.

Replace screws (1)!

Tightening torque 33 32 5AZ .

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Replace screw (1) and nut.

Insert screw (1) and tighten nut.

Tightening torque 33 32 1AZ .

Parts:  Bolt and nut

Replace the eccentric screw (2), eccentric washer and the nut.

Insert bolt (2) and connect eccentric washer.

Align eccentric washer to the marked position. Screw on the nut (2).

• Do not yet tighten to specified torque!

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Move vehicle into NORMAL POSITION .

Tighten nut (2) in normal position.

Tightening torque 33 32 2AZ .

Parts:  Replace the eccentric screw (2), eccentric washer and the nut.

Position brake caliper (2) with holder.

Parts:  Replace screws (1).

Tighten down screws (1).

Tightening torque 34 21 2AZ .

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Position wheel speed sensor (2) on trailing arm.

Tighten screw (1).

Tightening torque, 34 51 5AZ .

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Required follow-up work: 

• Refer to INSTALLING THE HELICAL SPRING .
• Carry out wheel alignment procedure. Refer to KINEMATICS DIAGNOSIS SYSTEM WHEEL ALIGNMENT WITH RIDE HEIGHT MEASUREMENT WITHOUT LOADING THE VEHICLE .