Can LCN closers be repaired?

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The LCN "Traditional" series closer line was discontinued in 1980.  
Because of the new extended LCN warranties and the desire to be consistent across the entire Allegion premium brands, LCN will be moving away from offering an out-of-warranty repair service beginni...
The 4040(XP) door closer can be used as a temporary replacement in a 4630/4640 operator to provide manual control of the door while the 4630/4640 closer cylinder is being repaired or a replacement ...
Finish is not specifically stated as being covered under warranty as it is covered under defects in material and workmanship.  EXCEPTION: There is no finish warranty for Falcon products. ...
Falcon lock warranty statementIves warranty statementGlynn-Johnson warranty statementLCN closer warranty statementSchlage warranty statementSteelcraft warranty statementVon Duprin warranty statement
The 4040XP, 1260/1261, 1460/1461, 4030/4031 closers have the tri-pack mounting option when ordered with an Rw/PA or Hw/PA designation.
The LCN closers are not designed nor intended to be exterior mounted in the elements.
Special Rust Inhibitor (SRI) - is a pretreatment that is applied to the metal components prior to the addition of the LCN powder coat finish, standard or custom. ...