Orion/hydraulic fan fittings leak
Defect Summary
On certain buses equipped with compressed natural gas or diesel engines, the hydraulic cooling fan motor pipes can leak.
Safety Consequence
A hydraulic leak which is not attended to readily may continue to provide exposed oil in the engine compartment.
Corrective Action
Dealers will replace the hydraulic pipes with flexible hoses. an interim owner notification letter was mailed on may 17, 2005. the recall began on september 30, 2005. owners should contact orion at 905-403-7832.
Similar Recalls
Other recalls from Orion Bus Industries Ltd. or involving Engine And Engine Cooling.
FAQ: Recall 04V544000
Your rights, the repair process, and what each field on this page means.
What is recall 04V544000?
NHTSA recall 04V544000 was issued by Orion Bus Industries Ltd. on November 11, 2004. It addresses: Orion/hydraulic fan fittings leak. The recall affects approximately 663 vehicles, with the defect involving the Engine And Engine Cooling component.
How do I get this recall repaired?
Contact any authorized Orion Bus Industries Ltd. dealer and reference NHTSA recall ID 04V544000 or the manufacturer campaign number NR (Not Reported). Under federal law, the repair is completely free regardless of vehicle age or owner history.
Is my vehicle included in this recall?
The only way to confirm is to look up your 17-character VIN at nhtsa.gov/recalls. NHTSA's tool will tell you if VIN-by-VIN this exact recall applies.
How long do I have to get a recall repair done?
There is no expiration on most federal safety recalls. Even if your vehicle is years old and you bought it used, the manufacturer is required to perform the repair at no cost.
Where does the data on this page come from?
All information on this page is sourced directly from the U.S. Department of Transportation public dataset for NHTSA recalls. Last refreshed: 2026-05-22. For the most current official notice, visit nhtsa.gov/recalls.