{"nhtsa_id":10089398,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2017-01-24","date":"2015-09-21","document_id":"TIBU8452-01","mfr_campaign":null,"replaces":null,"component":"ENGINE","mfr_system":null,"summary":"CT11 AND CT13 CYLINDER HEAD CRACK INSPECTION GUIDE - CT11 AND CT13 CYLINDER HEADS ARE CRACKING IN THE FIELD. THIS TECHNICAL INFORMATION BULLETIN (TIB) PROVIDES A GUIDE FOR DETERMINING THE SEVERITY AND IMPACT OF CYLINDER HEAD CRACKS ON CT11 AND CT13 ENGINES.","document":null,"url":"https://open.wenmarpro.com/bulletins/10089398","components":[{"id":"engine","name":"Engine","parent":null}],"codes":[],"topics":[],"vehicles":[{"make":"CATERPILLAR","model":"CT660","year_from":2012,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"CATERPILLAR","model":"CT680","year_from":2012,"year_to":2017,"match":null,"vehicle_ids":[]},{"make":"CATERPILLAR","model":"CT681","year_from":2014,"year_to":2017,"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":[]}