is there any maintenance on lcn closers

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The old 4030/4130 closers and arms are obsolete, there is nothing to replace them. No arm from other closers will fit  There is no closer that can replace the old 4030 series closer with the exa...
How to:  What are the steps to adjust a door closer?Facts: All LCN and FALCON door closers will have 3 regulating valves and a spring adjustment.  All closers with a "Delay" feature ...
Closers mounted according to LCN installation instructions require no periodic maintenance or seasonal adjustments.  Monthly, quarterly, and annual visual inspections are recommended for Fire/...
The LCN "Traditional" series closer line was discontinued in 1980.  
The fluid in an LCN closer must not be refilled in the field. See attached Warranty and Repair Communication 
It would be unnecessary to use the CNS/Cush arm and the Glynn Johnson overhead devices in the same application, both mechanisms stop the door.
Any LCN Closer that ends in the number 1, will meet ADA 5 lbs opening forces.
LCN does not recommend this type of installation, and has never sold a coupler to do this.
A cam-action closer has not been made available by LCN or Falcon so we have to continue to use our track style closers from an aesthetics point of view, or a standard 4000 series closer if it is an...