Acceleration in 1 Position
In 1, hydraulic pressure is applied to the 1st clutch and the 1st-hold clutch. The power flow when accelerating is as follows:
- Hydraulic pressure is applied to the 1st clutch, then the 1st clutch engages the secondary shaft 1st gear with the secondary shaft by the one-way clutch.
- The mainshaft 3rd gear drives the secondary shaft via the countershaft idler gear and the secondary shaft idler gear.
- The secondary shaft 1st gear drives the countershaft 1st gear and the countershaft.
- Hydraulic pressure is also applied to the 1st-hold clutch, and the 1st-hold clutch engages the secondary shaft 1st gear with the secondary shaft.
- 4WD: Power is transmitted to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
- Power is transmitted to the final drive gear, which in turn drives the final driven gear and the front differential.
- 4WD: As the final driven gear turns the front differential, power is transmitted through the transfer drive gear to the transfer output shaft that drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).NOTE: The illustration shows the 4WD transmission; the 2WD transmission does not have the transfer assembly.