If your closers are operating either.
Glass door closer adjustment.
Adjust swing latch speed.
Move the long connecting pin into the forward hole for winter or rear hole for springtime of the closer each time you change the storms or screens.
Most door closer brackets have slotted holes so you are able to slide them left to right to make adjustments without.
If none of these adjustments works then your door closer may be worn out and you will need to buy a new one to replace.
Now that you have the cover off you should be able to see the adjustment screws.
Increase the closing speed.
They should be marked on the closer.
Make adjustments to your pneumatic screen door closer storm door closer twice a year when you exchange the screens and glass storm panels.
If you are capable of doing this work yourself.
Making an adjustment to a commercial door closer if you find that there is oil in the cover or oil on or leaking from the closer body stop right there you need a new.
Replace the plate and if necessary the door and you.
Remove the plate to inspect the door closer body for leaks see below if adjustment holes had not been drill during the original installation measure where the adjustment screws are located.
The self closing speed is micro adjustable through the speed screw at the bottom.