Massey Ferguson 0A.60.20 – Implement/Hydraulic Control Module or Tractor Control Unit (TCU): External Hydraulic Valve 6 Issue

Triggered when the tractor's onboard diagnostic system detects an electrical or connection problem with the 6th electro-hydraulic remote valve (spool valve slice). It typically indicates an open circuit, a short circuit, a faulty solenoid, or a communication failure at the 4-pin connector on the valve itself.

• 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

   Visual Inspection: Locate External Hydraulic Valve 6 at the rear remote valve stack. Inspect the wiring harness leading to the valve for chafing, breaks, or rodent damage.

2. 2

   Connector Check: Disconnect the 4-pin electrical connector at the spool valve slice. Check for water ingress, bent pins, or corrosion. Clean with contact cleaner and reconnect to see if the code clears.

3. 3

   Solenoid Resistance Test: Use a multimeter to check the resistance across the solenoid pins on the valve. Compare the reading to a known good valve (e.g., Valve 5 or Valve 4) on the same stack.

4. 4

   Swap Test: If the wiring tests good, swap the electrical connection between Valve 6 and another valve. If the fault code changes to match the new valve position (e.g., changes to an 'External Hydraulic Valve 5 Issue' code), the spool valve slice/solenoid is internally failed. If the code remains 0A.60.20, the issue is in the tractor's wiring harness or the control module.

1. 1

   Depressurize the System

   Turn off the tractor and cycle the hydraulic remote controls to relieve any residual hydraulic pressure.

2. 2

   Clean the Area

   Thoroughly clean the rear remote valve stack to prevent dirt from entering the hydraulic system during disassembly.

3. 3

   Disconnect

   Unplug the 4-pin electrical connector from the faulty Valve 6 slice.

4. 4

   Remove the Valve Slice

   Remove the tie-rod bolts holding the hydraulic valve stack together. Carefully slide the faulty spool valve slice out of the assembly.

5. 5

   Replace O-Rings

   Whenever separating the valve stack, always replace the interconnecting O-rings between the slices to prevent internal or external leaks.

6. 6

   Install the New Valve

   Insert the new electro-hydraulic spool valve slice, reinsert the tie-rod bolts, and torque them to the manufacturer's specification.

7. 7

   Reconnect and Test

   Plug the 4-pin connector back in, start the tractor, and test the remote function. Clear the DTC using a compatible diagnostic tool.