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72–01 Weatherstrip, Door Latch, and Door Hinge Lightly coat door weatherstrips with a lubricant that is Apply a few drops of light engine oil, or spray a light ® or an equivalent) on the door latch mechanism. This will Lubricate door hinges by spraying them with a light Always lubricate new cab-door hinges at installation. Doors 72 Business Class Trucks Maintenance Manual, January 1998 72/1 |