{"nhtsa_id":10131591,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2018-04-02","date":"2018-01-12","document_id":"TSB-028","mfr_campaign":null,"replaces":null,"component":"FUEL SYSTEM, OTHER:STORAGE:TANK ASSEMBLY:PRESSURE RELIEF DEVICES","mfr_system":null,"summary":"Quantum has been advised by the supplier of the PRV, that the PRV spring used to directly control the venting pressure may not have been properly processed resulting in inconsistent spring pressure. This spring variation can result in erratic and unpredictable activation of the PRV valve.","document":{"url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10131591-9999.pdf","alternate_url":"https://static.nhtsa.gov/odi/tsbs/2018/MC-10131591-0001.pdf","confirmed":false},"url":"https://open.wenmarpro.com/bulletins/10131591","components":[{"id":"fuel-system","name":"Fuel system","parent":null},{"id":"fuel-tank","name":"Fuel tank","parent":"fuel-system"}],"codes":[],"topics":[],"vehicles":[{"make":"QUANTUM FUEL SYSTEMS LLC.","model":"CNG FUEL SYSTEM","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]}],"as_of":"2026-10-19","note":"A bulletin is a manufacturer's communication to its dealers, as NHTSA indexes it. The summary is NHTSA's. The document is the manufacturer's: read it at NHTSA. A bulletin is not a recall, and listing a model year does not mean every vehicle of it is concerned.","attribution":[]}