Combination air spring and shock absorber

A combination air spring and shock absorber comprising:

• an air spring member having an axial spring cavity extending longitudinally therethrough, the air spring member having a first spring opening and a second spring opening at opposite ends of the axial spring cavity;
• a shock absorber member substantially disposed in the axial spring cavity, the shock absorber member comprising a shock main body extending through the first spring opening and a shock rod extending from the shock main body and through the second spring opening and having an outer cylindrical surface;
• a rod attachment member removeably coupled to a distal end of shock rod, which extends through the second spring opening, the rod attachment member securing the air spring member to the shock absorber member such that the air spring member and the shock absorber member are slidably separable with the removal of said rod attachment member;
• a piston member that comprises a part of the air spring members, that defines the first spring opening and that engages the shock main body, the piston member interacting with the shock main body to inhibit longitudinal motion of the shock main body into the axial spring cavity through the first spring opening;
• and having an O-ring that slidingly and sealingly engages the main shock body to inhibit air flow through the second spring opening;
• and
• a cap member defining the second spring opening and longitudinally slidably engaging the outer cylindrical surface of the shock rod, the cap member interacting with the rod attachment member to inhibit longitudinal motion of the shock rod into the axial spring cavity through the second spring opening and comprising a rod cap seal which slidingly and sealingly engages the shock rod to inhibit air flow through the first spring opening.