Massey Ferguson A.51.1F – RK / RL control module: External Hydraulic Valve 5 Issue

Malfunction in the electro-hydraulic remote valve number 5, which is part of the rear remote valve stack used to control external hydraulic implements. This indicates an electrical connection problem, a failure of the valve's internal solenoid, or a communication error with the valve's built-in microprocessor.

• 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
• 7716
• 7718
• 7719
• 7720
• 7722
• 7724
• 7726
• 6700 Series
• 8600 Series
• 8700 Series

1. 1

   Inspect the electrical connector at External Valve 5 in the rear stack for corrosion, pushed pins, or moisture.

2. 2

   Check the CAN BUS wiring harness between the remote valve stack and the RK/RL control module to ensure it is intact.

3. 3

   Test the resistance of the solenoid control valve on Valve 5 to ensure it hasn't shorted or opened.

1. 1

   Depressurize the System

   Ensure the tractor is off, the implement is lowered, and hydraulic pressure is relieved before servicing.

2. 2

   Locate Valve 5

   Identify the 5th slice in the rear electro-hydraulic remote valve stack.

3. 3

   Disconnect and Remove

   Disconnect the CAN/power connector to the valve. Unbolt the valve slice from the hydraulic stack.

4. 4

   Replace the Valve/Solenoid

   Install the new electro-hydraulic remote valve assembly or replacement solenoid.

5. 5

   Reprogram the Valve

   Use a compatible Massey Ferguson diagnostic tool to reprogram the new valve's microprocessor so it identifies itself to the CAN BUS as 'Valve 5'. This is crucial as replacement valves are supplied blank.

6. 6

   Calibrate

   Perform an Electro-Hydraulic Remote Valve Lever Calibration to ensure proper flow control.