Completely remove and install the left or right trailing arm (AWD)

Preliminary work needed:

Remove rear WHEEL .

Removal:

Lever off protective cap (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Release collar screw (1), press brake pedal to floor for this purpose.

Tie up output shaft.

Courtesy of BMW OF NORTH AMERICA, INC.

Remove COIL SPRING .

Loosen screw (1).

Unscrew wheel speed sensor (2) from the trailing arm and set aside.

Courtesy of BMW OF NORTH AMERICA, INC.

Loosen screws (1).

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Release nut and remove screws (1).

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

Slacken nut (2).

Remove eccentric washer and unscrew screw.

Courtesy of BMW OF NORTH AMERICA, INC.

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Courtesy of BMW OF NORTH AMERICA, INC.

Installation:

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

Courtesy of BMW OF NORTH AMERICA, INC.

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

Replace screws.

Tightening torque 33 32 5AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Part : Replace nut.

Insert screw (1) and tighten nut.

Tightening torque 33 32 1AZ .

Replace the screw (2), insert it and connect the eccentric washer.

Part : Replace screw and nut (2).

Align eccentric washer to the marked position.

Screw on the nut (2).

Do not yet tighten to specified torque!

Shift vehicle into NORMAL POSITION .

Tighten nut (2) in normal position.

Tightening torque 33 32 2AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Position brake caliper (2) with holder.

Part : Replace screws (1).

Tighten down screws (1).

Tightening torque 34 21 2AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Position wheel speed sensor (2) on the trailing arm.

Tighten screw (1).

Tightening torque 34 51 5AZ.

Courtesy of BMW OF NORTH AMERICA, INC.

Install the HELICAL SPRING .
- Pay attention to installation position of compression spring (2).
- Keep collar screw and spur gearing of wheel bearing/output shaft clean and free from grease

IMPORTANT: Following installation note for spur gearing must be observed without fail!

Courtesy of BMW OF NORTH AMERICA, INC.

Part : Replace collar screw and compression spring.

Tighten collar screw (1) and compression spring hand-tight.

Courtesy of BMW OF NORTH AMERICA, INC.

Spur gearing of wheel bearing (1) and output shaft (2) must be installed form-fit (tooth in tooth position)!

Check whether spur gearing is locked tooth in tooth by reciprocally rotating wheel hub/output shaft.

Once positive locking has been ensured, tighten screw connection to the specified torque.

Tightening torque 33 41 2AZ .

Courtesy of BMW OF NORTH AMERICA, INC.

Connect protective cap (1).

Courtesy of BMW OF NORTH AMERICA, INC.

Required follow-up work:

Install rear WHEEL .
Perform either KDS CHASSIS/WHEEL ALIGNMENT CHECK WITH VEHICLE LOAD UP TO DESIGN POSITION or KINEMATICS DIAGNOSIS SYSTEM WHEEL ALIGNMENT WITH RIDE HEIGHT MEASUREMENT WITHOUT LOADING THE VEHICLE .