General Information, AutoShift

SD DM 14.03.00

Refer to the Eaton website for additional information, www.roadranger.com.

Eaton Fuller AutoShift transmissions have 10 or 18 forward speeds and two reverse speeds. The driver must use the clutch to start and stop the vehicle.

The driver does not need to break torque or increase or decrease engine speed to synchronize the shift. The transmission signals the engine controller when to break torque and the engine controller automatically increases or decreases engine speed. When engine speed is correct, the transmission engages the next gear and signals the engine controller to resume operation.

The AutoShift system consists of the following components:

  • The SmartShift control paddle on the steering column. See Fig..

  • The gear display module mounted on the dashboard indicates the current gear position or transmission status. The display also flashes the next gear to be engaged while the transmission is in neutral during a gear change. See Fig..

  • The shifter mechanism performs shifts at the front portion of the transmission. It preselects the shift to neutral and completes the gear change after driver input.

  • The Electronic Control Unit (ECU) includes two controllers: a transmission ECU and a system ECU. The transmission ECU controls all transmission shift functions and the system ECU manages all vehicle interfaces for transmission shift function

  • An electronic range valve, controlled by the transmission ECU, is used to perform range shifts.

To upshift manually, pull the lever up (towards you). To downshift manually, push the lever down (away from you).

  1. SmartShift Control Lever

  2. Slide Switch (forward driving mode switch)

  3. MAN Mode (of slide switch)

  4. AUTO Mode (of slide switch)

  5. Upshift Direction

  6. Reverse Position (of selector switch)

  7. Selector Switch

  8. Neutral Lock Button

  9. Neutral Position (of selector switch)

  10. Drive Position (of selector switch)

  11. Low Position (of selector switch)

  12. Downshift Direction

Fig. 1, SmartShift Control (with Eaton Fuller UltraShift PLUS and AutoShift)

  • Gear Display Module

  • Module Detail

  1. Current Gear

  2. 9th Gear Engaged

  3. In 9th Gear, Preselected Toward 10th

  4. Out Of Gear, Waiting For Engine/Transmission RPM To Synchronize

  5. 10th Gear Engaged

Fig. 2, Gear Display Module

Note:
Parent topic: Eaton Fuller AutoShift Automated Transmissions
Document Number: 0000123446
Manual Publication Date: 2025-01-23
Topic Publication Date: 2025-01-23