Gear operation

Gears on the mainshaft:

• 4th gear engages/disengages with the mainshaft by the 4th clutch.
• 5th gear engages/disengages with the mainshaft by the 5th clutch.
• Reverse gear engages/disengages with the mainshaft by the 4th clutch.
• Idler gear is splined with the mainshaft, and rotates with the mainshaft.

Gears on the countershaft:

• Final drive gear is integral with the countershaft.
• 1st, 2nd, 3rd, 5th, and park gears are splined with the countershaft, and rotate with the countershaft.
• 4th gear and reverse gear rotate freely from the countershaft. The reverse selector engages 4th gear and reverse gear with the reverse selector hub. The reverse selector hub is splined to the countershaft so that 4th gear and reverse gear engage with the countershaft.

Gears on the secondary shaft:

• 1st gear engages/disengages with the secondary shaft by the 1st clutch.
• 2nd gear engages/disengages with the secondary shaft by the 2nd clutch.
• 3rd gear engages/disengages with the secondary shaft by the 3rd clutch.
• Idler gear is splined with the secondary shaft, and rotates with the secondary shaft.

The idler gear on the idler shaft transmits power between the mainshaft and the secondary shaft.

The reverse idler gear transmits power from the mainshaft reverse gear to the countershaft reverse gear, and changes rotational direction of the countershaft to reverse.