volvo loader differential parts

Wheel and differential components in the Volvo L90 and Volvo L120 are critical elements of the drivetrain system, installed within the front and rear drive axles. This assembly includes the axle housing, crown wheel and pinion, planetary hub gears, axle shafts, tapered roller bearings, oil seals, and a hydraulically actuated differential lock. The differential unit is centrally mounted inside the axle housing and transfers gearbox output torque with a typical reduction ratio between 3.5:1 and 5.0:1. Final reduction occurs at the planetary hub, increasing torque by approximately 20 to 25 percent while reducing torsional stress on the axle shafts. This configuration ensures balanced load distribution, improved traction on low friction surfaces, and optimized tire wear under heavy duty cycles.

In these models, the multi disc hydraulic differential lock engages automatically or manually to prevent wheel slip when rotational speed differences occur between left and right wheels. Axle shafts are installed inside reinforced axle tubes and supported by tapered roller bearings with adjustable preload, typically maintaining axial clearance within 0.10 to 0.25 mm. Lubrication is provided by API GL-5 gear oil with 80W-90 viscosity to ensure high thermal stability and extreme pressure protection. Heat treated alloy steel gears with surface hardness ranging from 58 to 62 HRC deliver high resistance to impact loads and abrasive wear. Proper maintenance of these wheel and differential components sustains drivetrain efficiency above 95 percent and minimizes unplanned downtime.

Volvo loader L90 L120 differential spider gear

Volvo L90 and L120 crown wheel and pinion

Volvo L90 and L120 differential housing

Volvo loader L90 and L120 wheel oil seal

Volvo loader INA wheel bearing