{"nhtsa_id":10030468,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-10-08","date":"2009-06-01","document_id":"SB-60-142","mfr_campaign":null,"replaces":null,"component":"SUSPENSION:FRONT:SPRINGS:AIR SUSPENSION SYSTEM; SUSPENSION:REAR:SPRINGS:AIR SUSPENSION SYSTEM","mfr_system":null,"summary":"FREIGHTLINER: NEW MEDIUM BIAS AIR SPRINGS (18-52651-000) SUPERSEDED LOW BIAS AIR SPRINGS (18-40977-000) IN PRODUCTION ON 12/15/ 08/ OF REPLACING ONE AIR SPRING, DO NOT MATCH A LOW BIAS SIR SPRING WITH A MEDIUM BIAS ONE. THE TWO TYPES OF AIR SPRINGS HAVE DIFFERENT SPRING RATES, AND WILL HAVE A SLIGHTLY DIFFERENT RIDE HEIGHT AT THE SAME AIR PRESSURE. IF A MATCHING LOW BIAS AIR SPRING IS NOT AVAILABLE, REPLACE BOTH WITH MEDIUM BIAS AIR SPRINGS. NO MODEL YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10030468","components":[{"id":"suspension","name":"Suspension","parent":null},{"id":"air-suspension","name":"Air suspension","parent":"suspension"}],"codes":[],"topics":[],"vehicles":[{"make":"FREIGHTLINER","model":"BUSINESS CLASS M2","year_from":2010,"year_to":2010,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"CASCADIA","year_from":2010,"year_to":2010,"match":"exact","vehicle_ids":["2010_freightliner_cascadia"]},{"make":"FREIGHTLINER","model":"CENTURY CLASS","year_from":2010,"year_to":2010,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"COLUMBIA","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"FREIGHTLINER","model":"COLUMBIA","year_from":2010,"year_to":2010,"match":"exact","vehicle_ids":["2010_freightliner_columbia"]},{"make":"FREIGHTLINER","model":"CORONADO","year_from":null,"year_to":null,"match":"exact","vehicle_ids":[]},{"make":"FREIGHTLINER","model":"CORONADO","year_from":2010,"year_to":2010,"match":"exact","vehicle_ids":["2010_freightliner_coronado"]},{"make":"FREIGHTLINER","model":"FLD","year_from":null,"year_to":null,"match":null,"vehicle_ids":[]},{"make":"FREIGHTLINER","model":"FLD","year_from":2010,"year_to":2010,"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":[]}