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86 10 ... Removing and installing or replacing left or right coil spring

Release screw (1) and remove, tilt shock absorber (2) in direction of arrow towards rear.

Fig 1: Removing Shock Absorber
G03207609Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Use new self-locking nut.

Hold shock absorber vertically and protective cap points upwards. Completely press in shock absorber once and pull out up to required installation length. Do not tilt shock absorber further than is needed for installation.

Tightening Torque, 96 Nm.

The trailing arm folds down once the coil spring on the arm has been released.

No persons should be located underneath trailing arm. Risk of injury!

Release screw (1) between trailing arm (2) and coil spring.

Fig 2: Releasing Screw Between Trailing Arm And Coil Spring
G03207610Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Tightening Torque, 46 Nm.

Remove pressure plate (1) from coil spring (2).

Fig 3: Removing Pressure Plate From Coil Spring
G03207611Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Use pressure plate with nut.

Fit pressure plate (1) according to its shape (3) into pressure spring (2).

Release screw (1) between coil spring (2) and longitudinal member (3). Remove small pressure plate (4) and large pressure plate (5).

Fig 4: Removing Small And Large Pressure Plate
G03207612Courtesy of BMW OF NORTH AMERICA, INC.

Installation: 

Use pressure plate without nut.

Fit small pressure plate (4) according to its shape (6) into pressure spring (2).

Tightening Torque, 46 Nm.

Installation: 

Two persons are needed to install the coil spring correctly. One person presses down the pressure plate (2) seated inside the coil spring (1) and tightens the coil spring (1) / trailing arm (3) screw connection. At the same time, the second person levers the coil spring (1) with a screwdriver into its correct seat.

Fig 5: Installing Coil Spring, Longitudinal Member And Pressure Plates
G03207613Courtesy of BMW OF NORTH AMERICA, INC.

Tightening Torque for coil spring (1)/trailing arm (3), 46 Nm.