1 Position

In the 1 position, 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.
• 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.
• 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.
• Power is transmitted to the final drive gear, which in turn drives the final driven gear and the transfer drive gear.
• The transfer output shaft drives the transfer hypoid drive gear/shaft and the transfer output shaft (hypoid gear).
  NOTE: The illustration shows the 2005-2006 models; 2003-2004 models are similar.
  Fig 1: Transmission Cutaway View - Power Flow (1 Position)

  Courtesy of AMERICAN HONDA MOTOR CO., INC.

The power flow when decelerating is as follows:

• Hydraulic pressure is applied to the 1st clutch and the 1st-hold clutch. Rolling resistance from the road surface goes through the front wheels to the final drive gear, then to the countershaft idler gear.
• The one-way clutch disengages because the application of torque is reversed.
• The force conveyed to the secondary shaft idler gear turns the mainshaft 3rd gear via the countershaft idler gear. As a result, engine braking can be obtained with 1st gear.
  NOTE: The illustration shows the 2005-2006 models; 2003-2004 models are similar.
  Fig 1: Transmission Cutaway View - Power Flow (1 Position)

  Courtesy of AMERICAN HONDA MOTOR CO., INC.