Upshifting

m2 dm 08.06.004
  1. Position the gear shift lever in neutral. See Fig. for the shift pattern. Start the engine, and bring the air system pressure up to 95 to 125 psi (655 to 862 kPa).

    Fig. 1, Shift Pattern, Deep Reduction

    2. Note: If conditions are difficult, start out in LO-LO. Move the DEEP REDUCTION lever on the dashboard to the IN position. Otherwise start out in LO with the DEEP REDUCTION lever in the OUT position.

  2. Position the range preselection lever down, into low range.
  3. Depress the clutch pedal to the floor. Shift into LO gear; then, engage the clutch, with the engine at or near idle rpm to start the vehicle moving. The vehicle will start in LO or LO-LO depending on the DEEP REDUCTION lever position.
  4. To upshift if in LO-LO, move the DEEP REDUCTION lever to the OUT position and immediately release the accelerator, depress the clutch pedal once to break torque, and reengage the clutch. The auxiliary section will shift from LO-LO to LO when the gears reach the same speed.
  5. Shift progressively upward from LO through 1st, 2nd, 3rd, and 4th gears while the range preselection lever is in LO. Always double-clutch between gears.
  6. When in 4th gear and ready for the next upshift, pull up the range preselection lever and move the shift lever, double-clutching, to the 5th gear position. As the shift lever passes through neutral, the auxiliary section will automatically shift from low to high range.

    7. Notice: Never move the shift lever into the LO gear position after high range preselection or anytime the auxiliary section is in high range. Transmission damage could result.

  7. Continue upshifting from 5th gear through 8th gear, always double-clutching between gears.
Note:
Parent topic: Operation, Deep-Reduction Models
Document Number: 0000117791
Manual Publication Date: 2025-02-11
Topic Publication Date: 2024-05-09