Massey Ferguson 0A.60.28 – onboard diagnostic system: External Hydraulic Valve 6 Issue

Indicates a fault—typically an electrical connection problem, solenoid failure, or mechanical sticking—specifically located at the 6th external hydraulic remote valve (spool valve).

• 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 and the electrical connector at External Valve 6 for corrosion, bent pins, or frayed wires

2. 2

   Inspect the valve block for visible hydraulic fluid leaks or a physically stuck spool

3. 3

   Ensure the tractor's hydraulic reservoir is at the correct level and the fluid/filters are not heavily contaminated

1. 1

   Relieve Pressure

   Lower all implements to the ground and turn off the engine. Cycle the hydraulic levers/controls to relieve any residual pressure in the system.

2. 2

   Drain/Prepare for Fluid Loss

   Place a large catch pan or bucket under the rear remote valve assembly, as removing the valve will result in fluid loss.

3. 3

   Disconnect Electricals

   Unplug the electrical solenoid connector attached to External Valve 6.

4. 4

   Remove Hoses and Couplers

   Disconnect the hydraulic lines and quick couplers routed to the valve. Cap the lines to prevent contamination.

5. 5

   Unbolt the Valve

   Remove the mounting bolts securing the #6 valve section to the hydraulic valve stack/manifold.

6. 6

   Replace Seals and Valve

   Remove the faulty valve. When installing the new valve, ensure all mating O-rings and gaskets between the valve slices are replaced and properly seated.

7. 7

   Reassembly

   Bolt the new valve into the stack to the manufacturer's torque spec. Reconnect the hydraulic lines and the electrical harness.

8. 8

   Test and Bleed

   Top off the hydraulic fluid. Start the tractor, actuate the valve to bleed air from the lines, and check for leaks. Clear the DTC using a compatible diagnostic tool.