Massey Ferguson A.61.19 – Implement Control Unit or Tractor Control Unit (TCU): External Hydraulic Valve 6 Issue

Indicates a malfunction in the 6th external hydraulic remote valve circuit. This can be triggered by an electrical connection problem (such as a voltage drop or open circuit at the valve solenoid) or a mechanical failure (such as spool leakage, a stuck valve, or foreign matter preventing the valve from centering).

• 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
• 7715
• 7715S
• 7716
• 7716S
• 7718
• 7718S
• 7719
• 7720
• 7720S
• 7722
• 7722S
• 7724
• 7724S
• 7726
• 7726S

1. 1

   Navigate to the hydraulics page on the Datatronic 5 terminal (if equipped) to verify the flow settings and naming for Valve 6. Ensure the system is actively trying to command the valve.

2. 2

   Inspect the wiring harness and connector at External Hydraulic Valve 6 for corrosion, loose pins, or broken wires.

3. 3

   Perform a spool leakage check: Position the control handle in 'Neutral', connect a hydraulic hand pump to the control valve port for Valve 6, and pressurize to 2500 psi. If the port cannot hold pressure, oil is leaking around the spool, indicating a damaged spool/bore, failed centering spring, or foreign matter.

1. 1

   Relieve Pressure

   Ensure the tractor is off and all hydraulic pressure is relieved from the system before disconnecting lines.

2. 2

   Remove the Valve

   Disconnect the hydraulic lines and electrical connector from Valve 6, then unbolt the valve assembly from the valve bank.

3. 3

   Disassemble and Clean

   Disassemble the control valve. Clean all components thoroughly and inspect the spool and spool bore for scoring or damage.

4. 4

   Inspect the Spring

   Check the centering spring to ensure it is intact and capable of returning the spool to the 'Neutral' position.

5. 5

   Reassemble and Retest

   Reassemble the valve to ensure no contamination remains. Repeat the 2500 psi spool leakage check.

6. 6

   Check Return Lines

   Ensure the return port from the valve to the sump is not restricted, as this can cause the valve to malfunction.

7. 7

   Replace if Necessary

   If no pressure can be obtained after cleaning and reassembly, the valve assembly is internally compromised and must be replaced.

8. 8

   Clear Codes

   Use a compatible diagnostic tool to clear the A.61.19 DTC from the system.