General information about manual transmission (Mercedes-Benz E-Class W124)

The gearbox converts the torque transmitted from the engine in magnitude and direction. This is necessary to ensure the optimal speed and cross-country ability of the car, as well as for the most economical operation of the engine and the movement of the car in reverse. In addition, the gearbox disconnects the engine and transmission when the car is stopped and parked and when it is moving by inertia with the engine running.

The cars are equipped with 4- or 5-speed gearboxes. The gearbox components are housed in a crankcase, which is bolted to the rear of the engine.

The torque from the engine is transmitted to the input shaft of the gearbox via the clutch. The output shaft of the gearbox transmits torque via the cardan shaft to the rear main gear. The gears of the input and output shafts of the gearbox are in constant engagement with the gears of the intermediate shaft. The gear is engaged by moving the sliding clutch of the synchronizer, as a result of which the gear is rigidly connected to the shaft.

Gear shifting is accomplished by a lever mounted on the floor of the vehicle and a gear selection mechanism.

The gear selection mechanism moves the corresponding fork, which in turn moves the synchronizer sliding clutch, as a result of which the gear is rigidly connected to the synchronizer hub. Since the synchronizer hub is mounted on the splines of the output shaft, the rigid connection of the hub with the gear ensures the transmission of torque from the gear to the output shaft. The synchronizer consists of locking rings, spring-loaded crackers, a hub and a sliding clutch.

Original published on the website Mercedesman.ru