{"nhtsa_id":10033172,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2010-07-21","date":"2010-01-01","document_id":"SB-46-8","mfr_campaign":null,"replaces":null,"component":"STEERING:GEAR BOX (OTHER THAN RACK AND PINION)","mfr_system":null,"summary":"WESTERN STAR: TRW TAS85 STEERING GEAR INTERNAL LEAKAGE TEST. SOME TRW TAS85 STEERING GEARS HAVE BEEN EQUIPPED WITH AN INTERNAL RELIEF VALVE. THESE STEERING GEARS ARE TYPICALLY INSTALLED WITH POWER STEERING PUMPS THAT HAVE A PRESSURE RELIEF RATING GREATER THAN 2175 PSI (150 BAR). THE INTERNAL RELIEF VALVE LIMITS MAXIMUM SUPPLY PRESSURE TO PROTECT THE STEERING GEAR. NO MODEL YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10033172","components":[{"id":"steering","name":"Steering","parent":null},{"id":"steering-gear","name":"Steering gear","parent":"steering"}],"codes":[],"topics":[],"vehicles":[{"make":"WESTERN STAR","model":"CONSTELLATION","year_from":1995,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"WESTERN STAR","model":"CONSTELLATION","year_from":2001,"year_to":2001,"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":[]}