Differential Assembly: Description and Operation

Front Axle Housing







The front axle housing is divided into two different oil chambers. The front area accommodates the front axle differential, which is filled with hypoid oil. The rear area accommodates the clutch chamber with the PTM clutch, which is filled with special ATF. Information on the oil types and oil quantity is provided in the list of approved oils.







The front axle housing is cooled by the air stream by way of cooling fins.

There is a heat exchanger (2) between the two oil chambers. If the multi-plate clutch has to compensate for different wheel speeds on loose ground, for example, the oil in the clutch chamber becomes warmer than the oil in the differential chamber, and the oil in the clutch chamber is therefore cooled by the oil in the differential chamber. In the case of higher driving speeds and therefore higher speeds in the differential housing, for example, the oil in the differential housing becomes warmer and is cooled by the oil in the clutch housing.