Sometimes the wedge will freeze itself to the stem and steerer tube and will not release properly if you simply loosen the bolt. Hitting the bolt with a hammer after loosening it a few turns will normally free it up. After making sure that has happened, penetrating oil and a bit of time should release a stem that is still stubborn.
Sometimes the wedge will freeze itself to the stem and steerer tube and will not release properly if you simply loosen the bolt. Hitting the bolt with a hammer after loosening it a few turns will normally free it up. After making sure that has happened, penetrating oil and a bit of time should release a stem that is still stubborn.