Massey Ferguson 0A.11.11 – Mid Mount Valve Module or Autotronic Control Unit: External Hydraulic Valve 1 Issue

Malfunction in the first external hydraulic remote valve circuit. Typically an electrical fault, such as a connection problem, a short circuit (to +12V or Ground), or an issue with the spool position sensor value.

• 7724S
• 5712SL
• 7722
• 7722S
• 5713SL
• 7720S
• 7716
• 7718
• T4
• 7715
• 5710SL
• 7726
• 7726S
• 5711SL
• 7718S
• 7719
• 7714
• 7716S
• 7720
• Tier 4 (2015-2021)
• 7715S
• 7724
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626

1. 1

   Inspect the wiring harness leading to the rear external hydraulic valve block (specifically Valve 1) for chafed wires, pinched harnesses, or physical damage.

2. 2

   Disconnect the electrical plug at Valve 1 and check for water ingress, corrosion, or bent pins.

3. 3

   Use a multimeter to check for a short circuit to +12V or a short circuit to 0V (Ground) at the valve connector.

4. 4

   If your diagnostic tool allows for live data monitoring, check the 'Spool Position Sensor Value' for Valve 1 to see if it is reading out of range or stuck.

1. 1

   Preparation

   Park the tractor on a level surface, lower all hydraulic implements to relieve system pressure, turn off the engine, and disconnect the battery.

2. 2

   Locate the Valve

   Identify External Hydraulic Valve 1 on the rear remote valve stack.

3. 3

   Clean the Area

   Thoroughly clean the area around the valve to prevent dirt from entering the hydraulic system during removal.

4. 4

   Disconnect

   Unplug the electrical connector from the valve's solenoid/spool sensor.

5. 5

   Removal

   Remove the retaining bolts holding the Valve 1 solenoid/spool assembly to the main valve block. Carefully extract the valve, being prepared to catch a small amount of residual hydraulic fluid.

6. 6

   Installation

   Lubricate the O-rings on the new valve assembly with clean hydraulic oil. Insert the new valve and torque the retaining bolts to the manufacturer's specifications.

7. 7

   Reassembly

   Reconnect the electrical harness to the new valve.

8. 8

   Calibration

   Reconnect the battery. Connect a compatible Massey Ferguson diagnostic tool, clear the 0A.11.11 fault code, and run the hydraulic valve calibration procedure to ensure the Autotronic module learns the new spool position sensor limits.