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Power Flow
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General Information 2nd Ed. 02/07 FSO-2405
4th Speed
FSO-2405/92
4th Speed
The 4th speed gear is also named direct speed gear.
1. Torque from the engine is transferred to the transmission’s input shaft that, despite driving
the countershaft at the same time, transfers the torque directly to the mainshaft. The input
shaft clutching teeth engage the clutching teeth of the 4th speed synchronizer unit which
transfers the torque to the mainshaft.
The transmission’s noise level in this speed is very reduced, since torque is delivered directly
from one shaft to another and there is no gears under load.
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