4Matic Front Axle Transmission Output, Function - GF28.10-P-1012AVL

Model 213 with transmission 725.096 up to model year 2021 

Sectional view of transfer case with front axle transmission output 

Courtesy of MERCEDES-BENZ USA

Front axle transmission output 4MATIC in general 

The front axle transmission output (3) of the transfer case and the front axle differential are connected to each other through a propeller shaft. The universal joint at the transmission end is integrated into the front axle transmission output (3) of the transfer case. The propeller shaft tube is pushed onto the joint fork of the front axle transmission output (3) through drive-type splines.

The universal joints must be aligned straight to each other when assembled to ensure a uniform rotation transfer.

On the front axle transmission side, the propeller shaft is fastened via a propeller shaft flange to the drive pinion of the front axle transmission.

Generally, a universal joint that runs under an angular offset generates an unequal rotary motion. This irregular rotary motion is compensated for when the angular offsets are equal and located on a common plane.