{"nhtsa_id":620092,"type":"service_bulletin","type_name":"Service bulletin","date_added":"2001-07-12","date":"2001-02-26","document_id":"S01EK","mfr_campaign":null,"replaces":null,"component":"ENGINE AND ENGINE COOLING:COOLING SYSTEM:FAN","mfr_system":null,"summary":"SERVICE BULLETIN REGARDING MODIFICATION OF THE ELECTRICAL CIRCUIT ON THE HAYDEN HYDRAULIC COOLING FAN. THE HAYDEN HYDRAULIC COOLING FAN CIRCUIT MAY BECOME INOPERATIVE IN THE EVENT OF A BLOWN CIRCUIT PROTECTION FUSE. THE BLOWN FUSES WILL ALLOW THE HYDRAULIC OIL TEMPERATURES TO RISE ABOVE ACCEPTABLE LEVELS THAT COULD CAUSE PREMATURE FAILURE OF THE HYDRAULIC COOLING FAN PUMP SYSTEM. *TT","document":null,"url":"https://open.wenmarpro.com/bulletins/620092","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":"BLUE BIRD","model":"LTC 40","year_from":1999,"year_to":2000,"match":null,"vehicle_ids":[]},{"make":"BLUE BIRD","model":"WANDERLODGE","year_from":1999,"year_to":2000,"match":"exact","vehicle_ids":["1999_blue-bird_wanderlodge","2000_blue-bird_wanderlodge"]}],"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":[]}