Dayco 89658 Accessory Drive Belt Tensioner Assembly

Reliable Accessory Drive Belt Tensioner for Ford Super Duty

The Dayco 89658 accessory drive belt tensioner assembly is designed specifically for Ford F-250 Super Duty and F-350 Super Duty trucks. This automatic serpentine belt tensioner ensures proper belt tension and smooth operation of your vehicle's accessory drive system.

• Compatible with Ford F-250 Super Duty and F-350 Super Duty models
• Automatic tensioner type for consistent belt tension
• Single pulley design with a 76mm diameter and 37mm width
• Counter clockwise rotation direction
• Designed for serpentine belt systems
• Pulley features a flat surface for optimal belt contact

Technical Details of Dayco 89658 Tensioner Assembly

This Dayco accessory drive belt tensioner assembly (part number 89658) features an automatic tensioning mechanism that maintains the correct tension on the serpentine belt, reducing belt slippage and wear. The tensioner includes one pulley with a diameter of 76mm and a width of 37mm, designed to accommodate the serpentine belt used in Ford Super Duty trucks. The pulley rotates counter clockwise and has a flat surface to ensure proper belt alignment and contact. This component is engineered to meet the specific requirements of Ford F-250 and F-350 Super Duty models, providing reliable performance in demanding conditions.

Common Applications and Problem Solving

• Maintains proper tension on the serpentine belt to prevent slipping
• Reduces noise caused by loose or worn belts
• Prevents premature belt wear and extends belt life
• Ensures smooth operation of engine accessories such as alternator, power steering, and air conditioning
• Addresses issues related to belt misalignment or tension loss in Ford F-250 and F-350 Super Duty trucks

Installation Notes and Tips

When installing the Dayco 89658 tensioner assembly, ensure the serpentine belt is properly routed according to the vehicle’s belt diagram. Use appropriate tools to relieve tension from the old tensioner and carefully remove it before installing the new unit. Verify the pulley rotates smoothly in the counter clockwise direction and that the belt sits flat on the pulley surface. After installation, double-check belt tension and alignment to avoid premature wear or noise.

Quality Assurance and Warranty

Dayco manufactures the 89658 accessory drive belt tensioner assembly to meet OEM specifications for Ford Super Duty trucks. This part undergoes rigorous quality control to ensure durability and reliable performance. While specific warranty details may vary, Dayco products typically come with a limited warranty covering defects in materials and workmanship.