How to Shift a Fuller Roadranger Transmission

Written by gregory crews
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How to Shift a Fuller Roadranger Transmission
Learning to shift through the gears will make these larger trucks easier to operate. (Thomas Northcut/Photodisc/Getty Images)

Shifting a Fuller Roadranger Transmission takes practice. The biggest obstacle is not using the clutch to shift. Once the RPM (revolutions per minute) gauge starts to rise, the next gear is easy to accomplish. The Fuller Roadranger Transmission is commonly found in larger trucks, such as tractor-trailers and heavy equipment vehicles. Operating this transmission will require basic skills in driving a manual transmission, including engaging the gears and stopping.

Skill level:
Moderately Easy


  1. 1

    Ensure the gear lever is in the neutral position. Press the high-low shifter on the front of the shifter to the "down" position. Ensure the splitter on the side of the shifter is pushed to the "back" position.

  2. 2

    Start the truck by turning the key to the "on" position and press the ignition button to start the truck.

  3. 3

    Allow the air gauge to build to 120psi. This will allow the parking brakes to disengage. Push in the yellow parking brake. Push in the red trailer brakes to disengage the trailer brakes.

  4. 4

    Press the clutch pedal down to the floor with the left foot. Follow the diagram on top of the shifter to place the truck in first gear. First gear will be all the way to the left and down.

  5. 5

    Press the accelerator pedal down while releasing the clutch. The truck will move. Give the truck more fuel to ensure it takes off smoothly.

  6. 6

    Pull the shifter up and into second gear when the engine starts to wind up. The RPM gauge needle will climb up. The truck will feel like it is not going to go any faster.

  7. 7

    Shift through the remaining gears. Pull the gear shifter to neutral and pull the front switch to the "up" position. Place the shifter in first gear. That gear will be 7th gear.

  8. 8

    Shift through the gears until there is no more gears. Pull the splitter switch on the side forward. Proceed to the remaining gears.

  9. 9

    Place the splitter and high-low switch back to its original position when downshifting.

Tips and warnings

  • Practice is required to master the location of the gears and when to shift appropriately.
  • Always have a licensed driver in the truck to ensure proper and safe operation of the vehicle.

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