Hi, my name is ***** ***** I have been in the home improvement and repair field for 20 years. I will be very glad to help you today. To clean the hinge use a can of compressed air.It is usually used for cleaning computer keyboards. Then once clean lubricate lightly with silicone spray. Be sure not to use petroleum jelly or oil to lubricate as petroleum products will deteriorate any rubber bushings in the hinge.