I need some information, please if anyone can help. I was wondering if anyone knows how to repair a hydraulic leak in a commercial door closure?

 

Check yellow pages for people that specialize in commercial doors. You should be able to findd parts. But too often, it is cheaper to replace the closer.

 

what brand is the closer and were is the leak appear to be coming from, arm pivot area?? valve adjustment screw?? may just be a need to just replace a worn o-ring

some hydrualic jack repair places also work on door closers

you may also try getting contact with the manufauctere that made the closer (such as LCN, norton,dorma,etc.) good luck and please reply back about the closer

 

i had forgot to add, if the leaking closer is a BRITON traditional style aka pot belly closer (made in uk,austrialia and canada) its also possible that if the leak is coming from around speed adjustment knob (on a briton found on left side of closer) the nut between body of closer and adjustment knob got loosened and may need to be retightened.

if your seeing slamming or hearing noises like a gurgling noise ir excessive hssssss like a screen door one would do, you may need to top it off with more oil such as that used in hydryualic jacks or even mineral oil (believe it or not, yes the same stuff used as a laxative will work in door closer hydraulic systems) all you do, remove closer from door, place in a vise with valve end up and remove valve by unscrewing it all the way then remove the nut between body of closer under knob then using a syringe (some can use a funnel too) fill it slowly with the oil while pumping the arm while expelling the air and preventing more air from entering. when oil level is level with valve hole or close, put valve back in and tighten down the nut that is around valve alittle, then adjust closer to speed you want it at then tighten the nut alittle more (dont overtighten as with some of these old closers the valve nut is brass!)

if confused you may pm me about the leaks