- Remove the sticker covering the service hole on the underside of the RoadLok housing, at the level of the opening for the brake bolt or the sealing plug.
- Unlock the old cylinder by turning the key fully clockwise and hold the key in the unlocked position
- Press in the retaining pin by inserting a small screwdriver or Allen key through the service hole and pushing it in
- Use the key as a lever, turn the cylinder clockwise and pull it out
- Unlock the new cylinder by turning the key fully clockwise
- Press in the retaining pin with your fingers
- Align the retaining pin with the hole in the RoadLok and push the new cylinder in until you hear a click
- Check that the new cylinder works properly
- Cover the service hole with a new sticker or a piece of tape (important!)