How to Adjust Hydraulic Door Closer

Are you thinking why your door is slamming every time it closes? Why your door closing too slowly or too quickly? If yes, then you are having some problems with your hydraulic door closer adjustment. The hydraulic door closer adjustment is as easy as ABC. Knowledge, patience, and some tools: a wrench, a hex key, or a screwdriver is something that you need to adjust a commercial hydraulic door closer.

However, the most important thing you need is the ability and will power to climb up and down the ladder several times.

How to Adjust Hydraulic Door Closer

A hydraulic door closer automatically closes a door using springs and a system of chambers filled with hydraulic fluids to control the speed of the door.

Are you thinking, how do you adjust a hydraulic door closer? With some proper directions, you can do it yourself very quickly. Moreover, if you are one with courage and confidence, with just some simple turning of the screw is all you need to adjust your door.

Step 1: Inspecting Your Door Closer

Before you start your door closer hydraulic adjustment, check if there are any noticeable oily leaks or oil stains around the surface of the door closer.

If you see any trace of oil, stop right there, for your door needs to be replaced.

Step 2: Locating Tension Adjustment Screw

You will find the tension adjustment screw at the end of the pneumatic cylinder, with your door closed. How fast the door will close or open depends on the tightness of the adjustment screw.

If your adjustment screw is covered with a plastic or metal cover, you need to remove it first. You can take off the cover gently with a couple of screws.

Step 3: Turning the Screw

If you are thinking how to adjust the speed of the Hydraulic door, adjustment of the sweep speed valve and the latch speed valve is all you needed. Take a screwdriver and turn it clockwise, no more than 1/8, carefully, to slowly decrease the speed of the closer.

However, if you want to increase the speed, turn the screw counter-clockwise.

Be careful. Do not totally unscrew these valve screws. By doing so, the fluid inside the cylinder will come apart, and the fluid will pour down upon you.

Step 4: Latch Firmly

Your door will not firmly latch unless there is enough pressure from the closure device. To adjust the problem, at first, locate the pin that holds the cylinder to the bracket. Glide it up and out to release the cylinder from the bracket.

Now, you have to put the cylinder in a way so that the holes of the cylinder align under the bracket.

The next stage is to slide the pin to keep the bracket and cylinder together. It will make the door close harder and latch all the way.

Step 5: Watch it Close

Now, open and close your door at least 10 times. If it latches correctly and with speed, you want, 10 times in a row, pat yourself with a big smile.

However, if it does not work correctly, well, prepare yourself to climb up the ladder again.


  • If there is a hinge problem, a damaged door, door closer adjustment will not solve the problem.
  • If the closer stop closing the door before it is sealed all the way, the arm is probably misconnected on the shaft.
  • If the door is making too many noises, you should tighten the clamp that holds the different parts of the door closer adjustment.

Let us Adjust Hydraulic Door Closer

Adjusting a commercial hydraulic door closer is a task that requires your skill, knowledge, and your patience to use the ladder multiple times. However, if you are skilled with tools, you can easily adjust your door closer.


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