Very narrow sliding door pulley broken how to change?

First, one hand lifts one end of the door perpendicular to the ground, and one hand runs under the door pulley to lift the door pulley; Then it is lowered from the exit end of the track; Similarly, lift the other end of the very narrow sliding door from the track; Then hold both ends of the door with both hands and lift it upward; So the door comes down. The second is to remove the very narrow sliding door pulley, it is recommended to put the door flat on the ground and then study;

Generally, there is a top, glued to the door frame, pull the top to the second screw hole, which is the very narrow screw hole of the sliding door pulley, and remove it safely.

Next is the new pulley according to the disassembly method, the reverse on the good, but when the installation of the door frame between the upper edge and the upper pulley is recommended to clamp a piece of cardboard, in order to keep a certain distance between the upper pulley, install the pulley and then take the cardboard off. Then it is to install the narrow sliding door of the change pulley and adjust it well.