Power Flow
14
Power Flow
The transmission must efciently transfer the engine’s
power or torque to the vehicle’s driveline.
It is essential to know what takes place in
the transmission during torque transfer when
troubleshooting or making repairs.
1st, 2nd and 3rd Speeds
1. Torque from the engine is transferred to the
transmission’s input shaft.
2. From input shaft, the torque is transferred to the
countershaft drive gear. In this way, input shaft
and countershaft always run together.
3. The torque along the countershaft is delivered
to all mainshaft gears assembled on bearings.
These gears rotate free unless one gear is
shifted.
4. When a gear is shifted, the torque is transferred
from the corresponding engaged mainshaft gear,
through the clutching teeth of the synchronizer
assembly, to the mainshaft. Torque is, then,
delivered along the mainshaft to the driveline
components through output yoke.
Fluxo
1st Speed
1
2
34
Fluxo_1
2nd Speed
Fluxo_2
3rd Speed
Fluxo_3
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