How To Replace The Bladder of a Soccer Ball

First, the air must be let out of the ball. A seam is then cut opposite the valve and the old bladder is removed.

The new bladder must now be glued in. For this, contact adhesive such as “Pattex Classic” is used. It is applied to both halves, allowed to dry, and then the two parts are joined together. The valve hole must be precisely aligned with the corresponding recess.

The connection must now already hold. The remaining part of the ball bladder is then inserted into the ball.

Finally, the cut seam must be sewn back together. This is explained in another article/video.