Gates 39118 Accessory Drive Belt Tensioner Assembly - Air Conditioning or Air Conditioning and Crankshaft

Overview of Gates DriveAlign Premium OE Automatic Belt Tensioner

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39118) is engineered for precise tension control in accessory drive belt systems. Designed specifically for Volvo models including the C30, C70, S40, and V50, this tensioner assembly ensures consistent belt performance and longevity.

• Constructed from durable thermoplastic material for reliable operation
• Single pulley design with a smooth backside contact surface
• Compatible with V-ribbed belt types
• Mounting hole quantity: 1 for straightforward installation
• Dimensions: 2.56 inch (65 mm) outside diameter, 0.83 inch (21 mm) width
• Bearing bore inside diameter: 0.67 inch (17 mm)
• OE exact comparison rating for direct replacement

Detailed Product Description

The Gates DriveAlign Premium OE Automatic Belt Tensioner is a critical component in the accessory drive belt system, maintaining proper tension on V-ribbed belts to prevent slippage and premature wear. Its thermoplastic construction offers resistance to heat and wear, contributing to the tensioner's durability. The single pulley, which is not flanged, features a smooth backside contact surface that reduces belt wear and noise. With precise dimensions including a 2.56 inch (65 mm) outside diameter and a 0.83 inch (21 mm) width, this tensioner assembly fits securely in the designated mounting location using its single mounting hole.

This tensioner is designed to meet original equipment (OE) specifications, ensuring compatibility and performance equivalent to factory-installed parts. It is specifically compatible with Volvo C30, C70, S40, and V50 models, making it a suitable replacement for maintaining the accessory drive belt system's integrity.

About the DriveAlign Premium OE Automatic Belt Tensioner Line

The DriveAlign Premium OE Automatic Belt Tensioner product line by Gates focuses on delivering tensioners that meet or exceed original equipment standards. This line emphasizes precise belt tension control and durability, using materials and designs that align with factory specifications. Part number 39118 is part of this line, offering a reliable solution for Volvo accessory drive belt systems requiring exact OE fitment.

Common Applications and Issues Addressed

• Prevents accessory belt slippage and noise
• Eliminates uneven belt wear caused by improper tension
• Resolves belt misalignment issues in Volvo C30, C70, S40, and V50 models
• Addresses tensioner pulley bearing wear or failure
• Maintains consistent belt tension for optimal accessory performance

Installation Notes and Tips

Ensure the mounting surface is clean and free of debris before installation. Verify that the belt type is V-ribbed to match the tensioner specifications. Use the single mounting hole to secure the tensioner assembly firmly in place. Check belt alignment and tension after installation to confirm proper operation. Refer to vehicle-specific service manuals for torque specifications and installation procedures.

Quality Assurance and Warranty

The Gates DriveAlign Premium OE Automatic Belt Tensioner (Part Number 39118) is manufactured to meet OE standards, providing reliable performance and durability. While specific warranty details are not provided here, Gates products typically come with manufacturer-backed quality assurance to support long-term use in Volvo C30, C70, S40, and V50 vehicles.