Massey Ferguson A.22.1F – Mid Mount Valve Module: External Hydraulic Valve 2 Issue

Malfunction in the second external hydraulic remote valve circuit. The underlying condition is typically an electrical or communication failure, most commonly an issue with the spool position sensor value, a connection problem or loss of communication between the Dash and the Mid Mount Valve Module, or a failure in the solenoid coil that actuates the valve.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7715
• 7716
• 7718
• 7719
• 7720
• 7722
• 7724
• 7726
• 4707
• 4708
• 4709
• 4710

1. 1

   Wiring and Connector Inspection: Check the wiring harness connecting the Dash to the Mid Mount Valve Module and the specific pigtail going to External Valve 2. Look for chafed wires, corrosion, or loose pins.

2. 2

   Spool Position Sensor Test: Use a multimeter or diagnostic tool to verify the voltage of the spool position sensor on Valve 2. Ensure it is returning a valid signal (typically a 5V reference circuit).

3. 3

   Solenoid Coil Resistance: Test the resistance of the solenoid coil on Valve 2 to ensure it is not shorted to ground or open.

4. 4

   Swap Test: Temporarily swap the solenoid coil or sensor from Valve 1 or Valve 3 to Valve 2. If the fault code changes to the new valve location (e.g., External Hydraulic Valve 1 Issue), the component is confirmed faulty.

1. 1

   Depressurize the System

   Turn off the engine and cycle the hydraulic levers/joysticks to relieve any residual hydraulic pressure in the system.

2. 2

   Disconnect Power

   Disconnect the tractor's battery to prevent electrical shorts during the repair.

3. 3

   Access the Valve Block

   Locate the external hydraulic valve block (usually at the rear remotes or mid-mount block depending on the loader/implement setup).

4. 4

   Replace the Faulty Component

   If the coil is bad: Remove the retaining nut on the end of the spool valve set, slide off the old solenoid coil, and slide on the new one. If the spool position sensor/pilot control is bad: Unbolt the pilot pressure control/sensor housing from the valve slice. Install the new sensor/pilot control unit, ensuring the O-rings are properly seated and lubricated with clean hydraulic fluid.

5. 5

   Reassemble and Reconnect

   Tighten all locknuts and reconnect the electrical harnesses.

6. 6

   Clear Codes and Calibrate

   Reconnect the battery, turn the key to the ON position, and use the dashboard or a diagnostic tool to clear the error code. Start the engine and perform a hydraulic valve calibration procedure if required by the specific tractor model's software.