General Information

cen dm 08.08.002

    Important: The shifter knob has an interlock feature that prevents the deep reduction button from being moved forward when the range preselection lever is up (in high range); when in low range and the deep reduction button is in the forward position, the range preselection lever cannot be moved up.

  1. For all driving conditions, use the highest gear that is still low enough to start the vehicle moving with the engine idling, and without slipping the clutch excessively.
  2. Use the clutch brake to stop gear rotation when shifting into low-low, low-1st (whichever is used as a starting ratio) or reverse, when the vehicle is stationary. The clutch brake is actuated by depressing the clutch pedal all the way to the floor.
    For normal upshifts and downshifts, only a partial disengagement of the clutch is necessary to break engine torque.
  3. Double-clutch between all upshifts and downshifts.
  4. Never move the shift lever into low gear while in high range.
  5. Do not preselect with the deep reduction button. When making the shift from a deep reduction ratio to a low range ratio, move the deep reduction button from a forward position to a rearward position, then complete the shift immediately.
  6. Never move the deep reduction button from a rearward position to a forward position when the transmission is in high range.
  7. Do not shift from high range to low range at high vehicle speeds.
  8. Do not make range shifts with the vehicle moving in reverse gear.
  9. Never attempt to move the range preselection lever with the gear shift lever in neutral while the vehicle is moving. Preselection with the range preselection lever must be made prior to moving the shift lever out of gear into neutral.
  10. After your shifting ability improves, you may want to skip some of the ratios. This may be done only when operating conditions permit, depending on the load, grade, and road speed.
Note:
Document Number: 0000119178
Manual Publication Date: 2024-05-13
Topic Publication Date: 2024-06-06