{"nhtsa_id":10034191,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2010-10-25","date":"2010-03-01","document_id":"SB-3033","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL","mfr_system":null,"summary":"MCI: BEARING BOX. A NEW BREATHER VENT ASSEMBLY KIT FOR THE TAG AXLE BEARING BOX USED ON THE G SERIES COACHES. THE KIT INCLUDES A NEW BREATHER VENT AND AN EXTENSION WHICH RAISES THE BREATHER VENT ABOVE THE BEARING BOX TO REDUCE POTENTIAL PLUGGING OF THE BEARING BOX VENT AND INCREASING THE LUBRICATION LEVEL IN THE BEARING BOX. NO MODEL YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10034191","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"labels-manuals","name":"Labels and manuals","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"MCI","model":"G4100","year_from":2004,"year_to":2004,"match":null,"vehicle_ids":[]},{"make":"MCI","model":"G4500","year_from":2004,"year_to":2004,"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":[]}