Method for making a hydropneumatic accumulator

A method for making a hydropneumatic accumulator with a replaceable resilient bladder for a vehicle suspension, comprising the steps of bonding a spherical bumper to a closed end of a single layer bladder having an opposite "open mouth" end;

• chemically treating said bladder with a gas to provide imperviousness of a compressible gas through said bladder;
• treating said bladder with a neutralizing agent;
• engaging an inward facing seal portion extending around an "open mouth" portion of said bladder having an opposite closed end portion with an external groove extending around a cylindrical cap to close off said "open mouth" portion of said bladder;
• slideably mounting said cap and said bladder in the interior of an accumulator housing to suspend said bladder in said housing and divide said housing into a first sealed chamber for a hydraulic liquid and a second sealed chamber for a compressible gas;
• and engaging a detachable ring with a groove in the interior of said accumulator housing to retain said cap and said bladder in said housing.