{"nhtsa_id":10031011,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-12-30","date":"2009-06-09","document_id":"SL-PI-70310","mfr_campaign":null,"replaces":null,"component":"EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL","mfr_system":null,"summary":"CATERPILLAR: PRODUCT IMPROVEMENT PROGRAM FOR INSPECTING AND POSSIBLY REWORKING OR9749, OR9750, AND 148-2144 CYLINDER HEADS IN DEALER PARTS STOCK. SOME CYLINDER HEADS WERE ASSEMBLED WITH INTAKE AND EXHAUST VALVES IN THE INCORRECT POSITION. NO MODEL YEARS LISTED. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10031011","components":[{"id":"equipment","name":"Equipment and accessories","parent":null},{"id":"labels-manuals","name":"Labels and manuals","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CATERPILLAR","model":"C10","year_from":1998,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"CATERPILLAR","model":"C12","year_from":1998,"year_to":1999,"match":null,"vehicle_ids":[]},{"make":"CATERPILLAR","model":"CATERPILLAR","year_from":null,"year_to":null,"match":"exact","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":[]}