A spring-loaded door hinge contains a cylinder that houses a spring to provide tension to the hinge to push, or hold, a door closed. If the spring-loaded hinge does not apply enough tension, the door will not close properly. If the spring-loaded hinge applies too much tension, the door will slam shut. Adjust the tension in a spring-loaded door hinge for proper closing without slamming.
Remove the tension pin located on the side of cylinder on the spring-loaded door hinge using needle-nosed pliers.
Insert the end of a hex wrench into the small round hole at the top of the cylinder on the spring-loaded door hinge. The hinge may have been installed with the tension adjustment hole on the bottom. If there is no hole on the top, look at the bottom of the cylinder for the adjustment hole.
Rotate the tension spring in a clockwise direction when making adjustments from the top or counter-clockwise if the hole for the hex wrench is on the bottom.
Make a small, half-turn adjustment and reinsert the tension pin. Check the tension on the door by opening the door and checking the tension to close the door. If the tension is too tight or too loose, remove the tension pin, reinsert the hex wrench and make another small adjustment. Repeat until the tension on the door closes the door without slamming.