{"nhtsa_id":10030829,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2009-12-08","date":"2010-12-20","document_id":"TSB-0900025-5","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","mfr_system":null,"summary":"INTERNATIONAL: HORTON 12THX VMASTER ULTRA VISCOUS FAN DRIVE TROUBLESHOOTING GUIDE. HORTON VMASTER IS A VARIABLE SPEED DRIVE. IT DOES NOT FUNCTION LIKE AN ON/OFF DRIVE. EVEN WHEN THE DRIVE IS OFF, THE FAN WILL SPIN BETWEEN 50-300 RPM. WHEN DRIVE IS COMMANDED OFF BY ECU, FAN SPEED SHOULD BE 50 TO 300RPM. WHEN DRIVE IS COMMANDED ON BY ECU, FAN SPEED SHOULD BE APPROXIMATELY 125% OF THE ENGINE SPEED. NO MODEL OR MODEL YEARS LISTED. *PE UPDATED 6/3/11. *PE","document":null,"url":"https://open.wenmarpro.com/bulletins/10030829","components":[{"id":"engine","name":"Engine","parent":null},{"id":"cooling-fan","name":"Cooling fan","parent":"engine"},{"id":"cooling-system","name":"Cooling system","parent":"engine"}],"codes":[],"topics":[],"vehicles":[{"make":"INTERNATIONAL","model":"INTERNATIONAL","year_from":2003,"year_to":2003,"match":null,"vehicle_ids":[]},{"make":"INTERNATIONAL HARVESTER","model":"INTERNATIONAL","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":[]}