Peugeot 406

since 1996 release

Repair and operation of the car

Peugeot 406
+ 1. Maintenance instruction
+ 2. Maintenance
+ 3. Engine
+ 4. Cooling systems, heating and ventilation
+ 5. Fuel system
+ 6. System of ignition
+ 7. Coupling
- 8. Transmissions
   - 8.1. Mechanical transmission
      8.1.1. Technical data
      8.1.2. Replacement of oil in the transmission
      8.1.3. Management of gear shifting (BE3 transmission)
      8.1.4. Hummock drive of gear shifting (ML5T transmission)
      8.1.5. Replacement of sealing rings
      8.1.6. Backing lamp switch
      8.1.7. Speedometer drive sensor
      8.1.8. Removal and installation of the BE3 transmission
      8.1.9. Mechanical ML5T transmission
   + 8.2. Automatic transmission
+ 9. Power shafts
+ 10. Brake system
+ 11. Suspension bracket and steering
+ 12. Body
+ 13. Electric equipment
+ 14. Main malfunctions

8. Transmissions

8.1. Mechanical transmission


The transmission is placed in a case from aluminum alloy and attached to the left end of the engine. It consists of the transmission, the main transfer and differential. On all models, except the diesel engine 2.1 liters, the BE3 transmission is installed, and on the diesel engine 2.1 liters are established the ML5T transmission. Both types of the transmission are similar and work as follows.

The torque from the crankshaft of the engine is transmitted through coupling to a main shaft of the transmission on which the clutch plate is established. The main shaft is established on ball bearings. Further the torque is transferred to a secondary shaft which right end is established on the roller bearing, and left on ball. From a secondary shaft the torque is transferred to differential and to power shafts. In neutral situation the main shaft and gear wheels of a secondary shaft rotate freely and do not transfer torque to differential.

The mechanism of gear shifting is put in action by the lever located on a car floor by means of a switching rod on the BE3 transmission or a cable on the ML5T transmission. The mechanism of gear shifting moves the corresponding fork which moves the synchronizer and provides rigid connection of a gear wheel of a secondary shaft with a secondary shaft.