Case IH 517961-13 - DEC – DEC: Transmission A3 clutch solenoid out of calibration

The transmission controller has detected that the A3 clutch solenoid has lost its calibration values or the current calibration is no longer valid for smooth engagement, which can result in harsh shifting or hydrostatic instability.

• MAGNUM AFS Connect
• Magnum 400 AFS Connect
• Magnum 340

1. 1

   Verify if there are other active 517961-series codes (e.g., 517961-06, 517961-04, or 517961-00) indicating a hard electrical issue (short/open circuit) in the A3 solenoid wiring that must be fixed before calibration

2. 2

   Check transmission fluid temperature; it must be warmed to between 60 °C and 105 °C (140 °F+) for successful calibration

3. 3

   Ensure the tractor is parked on a flat surface in an open area, free of obstacles, with the parking brake engaged, as the machine may attempt to move during calibration

1. 1

   Warm transmission oil

   Start the tractor and warm the transmission oil to at least 60 °C (140 °F).

2. 2

   Access CONFIG MENU

   Turn the key switch to the ON position. Within ten seconds, press and hold the Enter key on the keypad to bring up the CONFIG MENU.

3. 3

   Select TCU

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

4. 4

   Access ETC MENU

   Scroll down to the ETC MENU screen and press Enter to access the transmission sub-menus (TRANS VIEW will display).

5. 5

   Access TRANS SETUP

   Scroll down until the TRANS SETUP screen displays, and press Enter.

6. 6

   Select Clutch Calibration

   Select the Cltch Cal (clutch calibration) screen and press Enter.

7. 7

   Verify oil temperature

   The display will show Oil Deg (current hydraulic fluid temperature in Celsius). If the temperature is within the 60 - 105 °C range, press Enter to proceed.

8. 8

   Perform calibration

   Follow the on-screen prompts to allow the DEC to cycle and calibrate the A3 clutch (along with the other transmission clutches). Maintain a stable engine RPM as directed by the display.

9. 9

   Evaluate calibration results

   If the calibration fails repeatedly, or if the tractor is plugging transmission filters and chattering, the A3 clutch pack may be mechanically worn, or the solenoid valve itself has failed and requires replacement.