How do i adjust my door hinges?

the hotel i work at has automatic closing hinges, some of them close way to fast and loud. is there anyway to adjust the tension or something?How do i adjust my door hinges?Yes there is. There is a series of holes around the top of the hinge. In one of the holes is the pin that holds the barrel in position. What you need to do is to get an allen wrench or something the same size as the hole. Place the wrench in another hole, turn the barrel away from the stop, remove the pin, and reinsert the pin into a different hole to add or subtract tension from the hinge. make sure that you adjust the hinges evenly on a door if there is more than one self closing hinge on it. Hope this helps.

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