Shifting Between HIGH RANGE and LO RANGE

108SD d 15.03.004

Marmon-Herrington MVG-1600 transfer cases use an air cylinder to shift between HIGH RANGE and LO RANGE. A dash-mounted switch operates the shift mechanism (see Ignition Switch for more information).

Shift between HIGH RANGE and LO RANGE, as follows:

  1. Stop the vehicle.
  2. Shift the transmission to NEUTRAL.
  3. Apply the parking brake.
  4. Move the dash-mounted switch to the HIGH or LO RANGE position to pressurize the shift mechanism in the transfer case. An audible engagement may be heard (which is normal).
  5. Shift the transmission to FIRST gear and apply light torque to test the engagement.
    If the shifter does not engage when shifting from HIGH RANGE to LO RANGE, shift the transmission into REVERSE, then NEUTRAL, and apply light torque to engage LO RANGE.
Note:
Parent topic: Transfer Cases
Document Number: 0000111866
Manual Publication Date: 2024-05-13
Topic Publication Date: 2024-05-16