Removing and installing complete front left or right spring strut (M4 GTS)

Installation note: 

1. All screws, nuts, bolts and hose clamps removed during the repair must be replaced.
2. Retaining elements on chassis and suspension and steering parts must be replaced.

Necessary preliminary tasks: 

• Remove the CARBON STRUT .
• Remove FRONT WHEEL .
• Remove FRONT BRAKE DISC .
• Remove ANTI-ROLL BAR LINK FROM SPRING STRUT .
• Disconnect plug connection for pulse sensor and expose cable up to holder on spring strut.
• Disconnect plug connection for brake pad wear sensor and expose cable up to brake caliper.
• Release brake hose from holder on spring strut.

Removal: 

Loosen the nut (2).

• If necessary, counter-hold at the Torx socket.

Release track rod end (1) from swivel bearing.

Unscrew nut (3).

• If necessary, counter-hold at the Torx socket.

Release tension strut (4) from swivel bearing.

Slacken nut (5).

• If necessary, counter-hold at the Torx socket.

Release wishbone (6) from swivel bearing.

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Release screws (1) of the bracing strut on support bearing.

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Loosen screws (1).

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Remove spring strut (1) with swivel bearing downwards.

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Installation: 

Check sealing washer (1) for damage and replace if necessary.

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Clean inside contact surface at spring strut dome.

Align strut (1) to the strut mounting.

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Part  : Replace screws (1).

Tighten down screws (1).

Tightening torque 31 31 1AZ .

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Tighten down screws (1).

Tightening torque 31 31 2AZ .

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Part  : Replace nuts (2, 3 and 5).

Join track rod end (1) to swivel bearing.

Tighten nut (2).

• If necessary, counter-hold at the Torx socket.

Tightening torque 32 21 3AZ .

Join tension strut (4) to swivel bearing.

Tighten nut (3).

• If necessary, counter-hold at the Torx socket.

Tightening torque 31 12 2AZ .

Join wishbone (6) to swivel bearing.

Tighten nut (5).

• If necessary, counter-hold at the Torx socket.

Tightening torque 31 12 4AZ .

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Required follow-up work: 

• Connect plug connection for pulse sensor and secure cable.
• Connect plug connection for brake pad wear sensor and secure cable.
• Secure brake hose on holder on spring strut.
• Mount ANTI-ROLL BAR LINK ON SPRING STRUT .
• Install FRONT BRAKE DISC .
• Install FRONT WHEEL .
• Install CARBON STRUT .