4Matic Front Axle Transmission Output, Function - GF28.10-P-1012AVJ
Model 253 with transmission 725.096
Sectional view of transfer case with front axle transmission output
Front axle transmission output with propeller shaft to front axle differential
Front axle transmission output 4MATIC in general
The torque is transferred from the drive gear for the front axle transmission output (1) (top picture) in the transfer case to the output gear for the front axle transmission output (2). The transmission end universal joint (3) is integrated into the front axle transmission output. The diaphragm seal (11) seals off the output shaft for the front axle transmission output (4). The front axle transmission output itself is sealed off by radial shaft sealing rings (top picture). Torque is transferred from the front axle transmission output of the transfer case to the front axle differential (10) through the propeller shaft (5).
Drive-type splines move the propeller shaft tube onto the output shaft for the front axle transmission output (4) of the joint fork for the front axle transmission output. The positioning aid (6) is used to achieve the correct position
The universal joints (3, 9) must be aligned straight to each other to ensure a uniform transfer of rotation.
At the front axle differential end, the propeller shaft (5) is bolted through the propeller shaft flange (7) to the flange (8) of the drive pinion for the front axle differential (10).
Universal joints
Generally, a universal joint that runs under an angular offset generates an unequal rotary motion.
If the angular offsets generated between the axles of the propeller shaft tube and the joint forks are equal, and if they are on the same level, the unequal values of both universal joints (3, 9) are mutually offset. The output speed of the propeller shaft to the front axle transmission is thus equal.
| Overview of system components, automatically controlled all-wheel drive (4MATIC) | GF28.00-P-9998AVJ |