To compensate for the different speeds of the front and rear wheels in an all-wheel drive vehicle, an additional (interaxle) differential.
The center differential can be locked by the driver on the front panel. By means of a vacuum in the engine intake manifold, a clutch is engaged that blocks the center differential. On vehicles with automatic transmission, this is done by a multi-plate clutch. In this case, the front and rear wheels are mutually blocked. Thanks to this, the car can move freely in deep snow and mud when the wheel slips.
Caution: The center differential must only be locked when the vehicle is stationary. In normal driving mode, the center differential should work. Otherwise, when cornering, the drive axles experience heavy loads and worsen the driving characteristics of the car.
The differential is attached directly to the gearbox and is supplied with the same oil as the gearbox. Oil change is carried out during scheduled maintenance. The gearbox is filled with 5 liters of API GL-5 gear oil with a viscosity of SAE 75W-90, 80W-90 or SAE 90. 1.1 liters of API GL-5, SAE-90 gear oil are poured into the rear axle differential. This oil should also be changed regularly. Repair of differentials must be carried out in a specialized workshop.
All wheel drive with manual transmission