You can now take the spring off the strut assembly, together with the dust sleeve.

Put the strut assembly back into the vise.

Install the replacement spring together with the dust sleeve. Make sure the bottom of the spring fits in the mount indentation. Don't try to attach the bottom part of the sleeve at this point.

Put back the top parts in reverse order and use the 6mm hex and 19mm wrench to tighten the bolt to 50 N·m.

Wrap the dust sleeve bottom around the mounts.