Dave Sr. from SWISCO responded:
November 19, 2021
Hello, I believe your Delta roller is the same as the 81-156. To adjust these types of rollers, you will need to use a Phillps-type screwdriver and turn it clockwise to bring the wheel down which will raise your patio glass door. To lower your patio door, you'd need to turn that adjustment screw counterclockwise. Take note that it's best to have someone raise up the door to take the weight off the roller when trying to adjust it. Thank you. |