AAV-2 Brass Accelerator Pump Assemble by slipping the spring over the stem, then the piston and finally the c type washer to keep it all together. Updated on 10/17/2021 Was this article helpful? Yes No Related Articles Stromberg AAV Pump Boot Stromberg AAV Identification Stromberg AAV Exploded View Need Support?Can't find the answer you're looking for?Contact Support