Dayco 89313 Accessory Drive Belt Tensioner Assembly - Main Drive

Overview of Dayco Accessory Drive Belt Tensioner Assembly 89313

The Dayco 89313 accessory drive belt tensioner assembly is designed for reliable serpentine belt tensioning in select Ford trucks and SUVs. Engineered for counter clockwise belt direction, this automatic tensioner ensures consistent belt performance and longevity in demanding applications.

• Compatible with Ford E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty models
• Serpentine belt type tensioner with automatic adjustment
• Two pulleys included: Pulley 1 with 76mm diameter, 8 grooves, 38.1mm width; Pulley 2 with 76mm diameter, flat surface, 37mm width
• Counter clockwise belt direction for proper belt routing
• Durable construction designed for heavy-duty use

Detailed Product Description

The Dayco 89313 accessory drive belt tensioner assembly is a critical component in the accessory drive belt system for various Ford heavy-duty vehicles. This automatic tensioner maintains optimal tension on serpentine belts, preventing slippage and reducing wear. Featuring two pulleys, the first pulley has a diameter of 76mm with 8 grooves and a width of 38.1mm, designed to engage the belt securely. The second pulley also measures 76mm in diameter but has a flat surface and a width of 37mm, supporting proper belt alignment. The tensioner operates with a counter clockwise belt direction, matching the original equipment specifications for the listed Ford models.

Applications and Problem Resolution

• Prevents belt slippage and squealing noises
• Maintains consistent belt tension to avoid premature belt wear
• Reduces risk of accessory drive system failure
• Eliminates uneven belt wear caused by improper tension
• Supports smooth operation of alternator, power steering, and air conditioning components

Installation Notes and Tips

• Ensure compatibility with Ford E-350 Club Wagon, E-350 Super Duty, Excursion, F-250 Super Duty, and F-350 Super Duty before installation
• Verify belt routing matches counter clockwise direction as specified
• Inspect pulleys for wear or damage prior to installation
• Use proper tools to relieve tension safely during removal and installation
• Follow vehicle manufacturer torque specifications for mounting bolts

Quality Assurance and Warranty

Dayco manufactures the 89313 accessory drive belt tensioner assembly to meet or exceed OEM standards for durability and performance. This part undergoes rigorous quality control to ensure reliable operation in heavy-duty Ford vehicles. Warranty coverage details should be confirmed with the point of purchase or Dayco directly, as terms may vary.