Massey Ferguson A.20.1E – Mid Mount Valve Module or Hydraulic Control Module: External Hydraulic Valve 2 Issue

Malfunction in the second external remote hydraulic valve circuit. The underlying condition is typically an electrical connection problem to the valve's solenoid, an out-of-range spool position sensor value, or a mechanical sticking/jamming of the valve spool that prevents it from directing hydraulic fluid properly.

• 5710SL
• 5711SL
• 5712SL
• 5713SL
• T4
• 4707
• 4708
• 4709
• 4710
• 5608
• 5609
• 5610
• 5611
• 5612
• 5613
• 7614
• 7615
• 7616
• 7618
• 7619
• 7620
• 7622
• 7624
• 7626
• 7714
• 7726S

1. 1

   Verify the hydraulic fluid (UTTO) level is correct and the fluid is not contaminated. A clogged hydraulic filter can cause pressure drops that trigger valve codes.

2. 2

   Inspect External Valve 2 (usually mounted on the lift cover or rear remote stack) for visible fluid leaks, which indicate blown O-rings or seal wear.

3. 3

   Check the wiring harness and quick-disconnect plugs going to Valve 2. Look for corrosion, frayed wires, or loose connections, as connection drops are a primary cause of this code.

4. 4

   Use a multimeter to verify the voltage of the spool position sensor. If the sensor is sending erratic values to the module, the valve will throw an error.

5. 5

   Check if the valve is physically stuck. Manually moving the pump control valve lever back and forth can sometimes release a stuck spool caused by debris.

1. 1

   Relieve Pressure

   Lower all implements to the ground, turn off the tractor, and actuate the hydraulic levers to relieve all residual system pressure.

2. 2

   Clean the Area

   Thoroughly clean the area around the hydraulic lift cover and the external valve stack to prevent dirt from entering the hydraulic pump chamber.

3. 3

   Disconnect Wiring

   Unplug the electrical harness connected to the Valve 2 solenoid and spool position sensor.

4. 4

   Remove the Valve

   Remove the bolts securing the external valve to the base plate on the hydraulic lift cover.

5. 5

   Protect the Standpipe

   As you lift the valve off, ensure that the internal hydraulic standpipe is not dislodged from its seat in the hydraulic pump.

6. 6

   Inspect/Replace

   Inspect the base plate O-rings. If the valve spool is scored or the solenoid is dead, replace the entire valve assembly. If it is just leaking, replace the O-rings.

7. 7

   Reinstallation

   Fit the new valve onto the base plate, ensuring the standpipe is correctly located into its seat. Torque the mounting bolts to OEM spec.

8. 8

   Refill and Bleed

   Top up the hydraulic system with fresh UTTO fluid, start the tractor, and cycle the remote valve several times to bleed air from the system.