Case IH 134 – TRANS: Master clutch is not calibrated

The transmission controller has lost the calibration values for the master clutch engagement point (fill time and current), or a new controller/component has been installed and has not yet been taught the clutch engagement parameters.

• MX Magnum
• MX Magnum Series
• Magnum Series
• Steiger Series
• Puma Series
• TG Series

1. 1

   Verify transmission fluid temperature is between 60°C and 105°C (140°F - 221°F), as calibration will fail if oil is too cold or hot.

2. 2

   Check the master clutch solenoid and wiring harness for open or short circuits (located on the left side of the tractor, rear of cab steps).

3. 3

   Ensure the clutch pedal potentiometer is functioning correctly and sending the proper voltage (~8 volts) to the controller.

4. 4

   Ensure the tractor is parked on a flat surface with the parking brake engaged and the area clear of bystanders before attempting calibration.

1. 1

   Park the vehicle

   Park the vehicle in an open area, free of obstacles.

2. 2

   Check transmission oil temperature

   Ensure the transmission oil temperature is within the 60°C - 105°C range.

3. 3

   Access CONFIG MENU

   Turn the key switch to the ON position. Within 10 seconds, press and hold the Enter key on the keypad to access the CONFIG MENU.

4. 4

   Select TCU

   Use the down arrow key to highlight TCU and press Enter.

5. 5

   Select ETC MENU

   Arrow down to the ETC MENU and press Enter.

6. 6

   Select TRANS SETUP

   Arrow down to TRANS SETUP and press Enter.

7. 7

   Select Cltch Cal

   Select Cltch Cal (clutch calibration) and press Enter.

8. 8

   Verify Oil Deg

   The Oil Deg screen will display the current transmission fluid temperature. If it is within range, press Enter to continue.

9. 9

   Calibrate clutches

   Follow the on-screen prompts to calibrate the clutches. The system will cycle through the clutches, and the master clutch is the final clutch in the series.

10. 10

    Complete calibration

    When the *Mstr mA screen displays, the master clutch calibration is complete. Press the Enter key to exit clutch calibration and return to the TRANS SETUP menus.

11. 11

    Shift to Park

    Depending on the position of the transmission control, a 'Shift to Park' instruction screen may display. Put the transmission in Park if required.