Remanufactured Axle Assembly 3.55 Ratio Dual Rear Wheel

The Zumbrota Drivetrain RAA435-1497A is a remanufactured axle assembly engineered for select Ford F-350 models from 1987 to 1997. This assembly features a 3.55 gear ratio, a 10.25-inch ring gear, and is designed for Dual Rear Wheel (DRW) configurations. It is important to note that this specific model is without Posi Traction and does not include hubs, brakes, backing plates, or axle shafts. Each Zumbrota Drivetrain Axle Assembly undergoes a rigorous remanufacturing process to ensure precision and reliability. The process involves thorough inspection of all internal components, including ring and pinions, internal gears, clutches, and carriers. To guarantee longevity and optimal performance, all bearings, seals, crush sleeves, pinion nuts, and shims are replaced. Gears are meticulously inspected for proper tooth contact patterns and rolling torque is set using inch-pound measurements, while backlash is precisely set for adequate gear lubrication and quiet operation. The housings and tubes are also subjected to strict quality control. Axle tubes are inspected for straightness to meet OEM specifications, and housings are tested for surface wear and cracks. Zumbrota employs an exclusive hydro-blast rinse and sandblasting procedure on both internal and external parts, followed by a proprietary shot-peened deep cleaning process. This comprehensive approach sets a high standard for axle assembly remanufacturing, ensuring the unit is returned to its original OEM finish and functionality.