Storm Door Pneumatic Closer with Shock Spring

I have a Stormking 440 and the spring broke. I need a new spring and how to remove and install it.

Can't say the name. But let's an old door closer

I purchased a 40-079 door closer from Swisco to replace a worn out S-B Manufacturing Storm King Model 105. Installation was easy and thankfully you offer this product as it resembles the design of the old closer. However, I have a problem with just the last few inches of door travel (see attached vi ... (cont.)

Hello - My likely-original Storm King screen door closer on my 1951 home isn't closing all the way. I've adjusted the screw and it simply no longer pulls in the last 1 inch of travel. I managed to take it apart, and there appears to be at least one serviceable part inside; a kind of rubber piston. ... (cont.)

Have a storm king 440 on garage door it made a loud bang last night on the part attached to the jamboff frame and the box is slightly open can it be repaired ? how ? any manuals ? Thanks for your help Michele