Massey Ferguson 04.02.F0 – TRANS: Transmission Calibration Issue

Triggered when the transmission control module loses its calibration values, a calibration procedure fails or is interrupted, or a hardware fault (such as a faulty sensor or solenoid) prevents the system from successfully calibrating the transmission clutches.

• 7714
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S
• Tier 4 (2015-2021)
• MF 7714
• MF 7715
• MF 7715S
• MF 7716
• MF 7716S
• MF 7718
• MF 7718S
• MF 7719
• MF 7720
• MF 7720S
• MF 7722
• MF 7722S
• MF 7724
• MF 7724S
• MF 7726
• MF 7726S

1. 1

   Ensure the transmission oil is at the correct level and the temperature is between 35°C (95°F) and 45°C (113°F).

2. 2

   Check the shuttle position potentiometer and clutch pedal sensor for correct voltage sweeps to rule out incorrect adjustment or dead spots.

3. 3

   Inspect the transmission forward/reverse solenoid valves and their wiring harnesses for physical damage, corrosion, or poor connections.

1. 1

   Preparation

   Position the tractor on flat ground.

2. 2

   Warm-Up

   Warm up the transmission oil to between 35°C and 45°C (viewable on diagnostic screen 1). Engaging the PTO can help speed up this process.

3. 3

   Cycle Components

   Before starting the calibration, activate the PowerShuttle (forward and reverse) 10 times in each direction for 5-10 seconds. This warms up the control units and solenoid valves to match the transmission temperature.

4. 4

   Zero Settings

   Configure the PowerShuttle progressivity settings all to "0" on the left-hand dash screen.

5. 5

   Disengage Systems

   Disengage the PTO, place the tractor in neutral, release the park brake, and ensure the front axle/4WD is disengaged.

6. 6

   Initiate Calibration

   Raise the engine speed to approximately 1500 RPM. Raise the PowerShuttle arm to the "raised" position and hold it while simultaneously pressing the differential lock switch for about 10 seconds.

7. 7

   Start Sequence

   Once the right-hand dash screen displays "Ct", move the PowerShuttle arm into the forward position to begin the calibration.

8. 8

   Wait

   The calibration takes approximately 10 minutes. The screen will continuously show "Ct", and it is normal to hear the transmission shifting and making noises.

9. 9

   Completion

   Once finished, the screen will display the transmission ratio (e.g., 1A/2A).

10. 10

    Save Settings

    Place the PowerShuttle into neutral, disengage the differential lock, idle the tractor down, and switch the engine off to save the new calibration values.

11. 11

    Validation

    Restart the tractor and test drive using a variety of maneuvers (forward to reverse, neutral to forward, etc.) to ensure shifting is smooth.