Manual transmission — general description (Peugeot 406)

The gearbox is housed in an aluminum alloy housing and is attached to the left end of the engine. It consists of a gearbox, final drive, and differential. All models except the 2.1-liter diesel engine are equipped with the BE3 gearbox, while the 2.1-liter diesel engine is equipped with the ML5T gearbox. Both types of gearbox are similar and operate as follows.

Torque from the engine crankshaft is transmitted through the clutch to the primary shaft of the gearbox, on which the clutch disc is mounted. The primary shaft is mounted on ball bearings. Then the torque is transmitted to the secondary shaft, the right end of which is mounted on a roller bearing, and the left on a ball bearing. From the secondary shaft, torque is transmitted to the differential and to the drive shafts. In the neutral position, the primary shaft and secondary shaft gears rotate freely and do not transmit torque to the differential.

The gearshift mechanism is actuated by a lever located on the floor of the vehicle, by a shift rod on the BE3 gearbox, or by a cable on the ML5T gearbox. The gearshift mechanism moves the corresponding fork, which moves the synchronizer and ensures a rigid connection of the secondary shaft gear with the secondary shaft.

Information copied from the resource Peugeotbook.ru