Guide to different types of garage door openers Dingen om te weten voordat u koopt
Track and Roller Brackets:Check all the brackets that hold the track to the wall and the brackets holding the rollers. These brackets are under high tension and are usually attached with a bolt and doel. If you find any that are loose, tighten them with a wrench.Nylon rollers tend to crack or chip when they deteriorate, so defects should be easy to