are arms interchangeable on LCN closers

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The 1260, 1460, and 4030 regular arm closers on the pullside will allow 180° door opening and can be held open at 180°, frame and trim permitting.
Cam Lift hinges can only be used with LCN door closers that have a "Regular" style arm.     Manual Closers: Maximum lift dimension is 3/4". Can not be use EDA, CUSH, or Track Arm door closers...
2030 and 5030 are both overhead concealed closers. The 2030 uses a concealed, in the door, track, and a concealed one piece arm. The 5030 uses a exposed double lever arm (like the arm for a 401...
The hold open position on a "REG" or "EDA"  hold open arm is set with the door to a few degrees shy of the desired hold open point. To properly set, open the door 5° less then the desired hold open...
The standard 1460 EDA arm is not long enough to allow the door to open 180°.
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.
The 4640 Regular arm (4640-3077) is the same as: 4040 Long Arm 4820 Regular arm. The arms listed above are for reveals up to 4 1/2" and have a 8 3/8" long rod and shoe. 4640 Long arm ...
When installing the arm; the gearbox shaft  and door must be at the (+90°) full open position. The following step are used to install the Sr. Swing (REG) push arm. Install the header and door brac...
EDA ARM - The EDA arm is a heavy duty parallel arm mount.  The degree of door opening is determined by the template used for mounting. EDA arm closers can only be mounted as a Push Side parallel ar...