Transmission System Description and Operation

Transmission System Description and Operation

The F40-6 is a 6-speed manual transmission. This manual transmission is an all-synchromesh 3-shaft transmission.





This 3-shaft transmission has the following advantages:

* Compact construction

* Improved smooth-running performance

* Better shift quality

* High torque transmission

Location of the Shafts and the Differential in the Transmission Housing





1 - Input shaft

2 - Upper main shaft

3 - Differential gear

4 - Lower main shaft

In this transmission angular cone bearings are used for all shafts. These bearings require a certain amount of play and pretension. The required amount of bearing play and pretension is achieved at the production stage by using shims under the angular cone bearing in the transmission housing.

Location of the Shafts and the Differential

This diagram shows the location of the respective shafts and differential gear.






1 - Input shaft

2 - Upper main shaft

3 - Lower main shaft

4 - Differential gear

Location of the Gear Wheels

This diagram shows the location of the gear wheels on the respective shaft.





1 - Reverse gear wheel - Upper Main Shaft

2 - 3rd gear wheel - Upper Main Shaft

3 - 4th gear wheel - Upper Main Shaft

4 - 6th gear wheel - Input Shaft with 1st/Reverse Gear and 2nd Gear

5 - 4th gear wheel - Input Shaft with 1st/Reverse Gear and 2nd Gear

6 - 3rd/5th gear wheel - Input Shaft with 1st/Reverse Gear and 2nd Gear

7 - 6th gear wheel - Upper Main Shaft

8 - 5th gear wheel - Upper Main Shaft

9 - 2nd gear wheel - Upper Main Shaft

10 - 1st gear wheel - Upper Main Shaft

Particular benefits of this 3-shaft transmission are that gear wheel for 3rd gear is also used for 5th gear and that 1st gear wheel is used for reversal of the rotating direction for reverse gear.

Power Flow in the Individual Gears

The following diagrams show the flow of power in the individual gears.

1st Gear





1 - 1st gear power flow

2nd Gear





1 - 2nd gear power flow

3rd Gear





1 - 3rd gear power flow

4th Gear





1 - 4th gear power flow

5th Gear





1 - 5th gear power flow

6th Gear





1 - 6th gear power flow

Reverse Gear





1 - Reverse gear power flow

Transmission Shift Linkage





The gears of the F40-6 transmission will be shifted via a cable linkage system.