TC Remanufacturing HD3689-8-2 Automatic Transmission Torque Converter

Overview of TC Remanufacturing HD3689-8-2 Torque Converter

The TC Remanufacturing HD3689-8-2 is a precision-engineered automatic transmission torque converter designed specifically for Ford F-250 Super Duty and F-350 Super Duty models. This multi-disc lock-up converter offers reliable performance and is built to meet the demanding requirements of heavy-duty truck transmissions.

• Bolt Circle Diameter: 11.375 inches
• Converter Diameter: 12.750 inches
• Converter Type: Multi disc lock up
• Hub Type: Milled flats
• Mounting Type: Studs
• Pilot Diameter: 1.375 inches
• Spline Count: 31
• Stall Speed Range: 1300-1500 RPM
• Converter Codes: 6mm, ww9
• Ring Gear: Not included

Technical Details and Specifications

The HD3689-8-2 torque converter features a 12.750-inch diameter and an 11.375-inch bolt circle, ensuring a precise fit for compatible Ford Super Duty transmissions. Its multi-disc lock-up design improves transmission efficiency by reducing slippage during lock-up, which enhances fuel economy and drivability. The milled flats hub type and stud mounting provide secure installation and durability under heavy load conditions. With a pilot diameter of 1.375 inches and 31 splines, this torque converter is engineered to match the exact specifications required by Ford F-250 and F-350 Super Duty trucks. The stall speed range of 1300-1500 RPM is optimized for these vehicles, balancing torque multiplication and smooth engagement.

Compatible Vehicles and Applications

This automatic transmission torque converter is compatible with the following Ford models:

• Ford F-250 Super Duty
• Ford F-350 Super Duty

It is designed to replace worn or damaged torque converters in these trucks, restoring proper transmission function and performance.

Common Issues Addressed by This Torque Converter

• Transmission slipping or delayed engagement
• Overheating due to inefficient torque transfer
• Reduced fuel efficiency from lock-up failure
• Shudder or vibration during acceleration
• Excessive stall speed causing poor drivability

Installation Notes and Tips

When installing the HD3689-8-2 torque converter, ensure the following:

• Verify compatibility with your Ford F-250 or F-350 Super Duty transmission model.
• Inspect the transmission pump and seals for wear before installation.
• Properly align the milled flats hub and secure the converter using the stud mounting system.
• Check the spline engagement to avoid damage during installation.
• Fill the transmission with the manufacturer-recommended fluid after installation.

Quality Assurance and Warranty

TC Remanufacturing produces this torque converter to meet strict quality standards, ensuring reliable performance and durability. The HD3689-8-2 is remanufactured with precision to restore original equipment specifications. Please refer to TC Remanufacturing's warranty policy for coverage details, which typically includes protection against defects in materials and workmanship.