Massey Ferguson A.5X.23 – Hydraulic Control System: External Hydraulic Valve 5 Issue

Fault in the circuit controlling the number 5 rear remote/spool valve. The underlying condition is typically an electrical issue with the valve's actuator/solenoid circuit, such as an open circuit, a short to ground, or a short to power.

• 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

   Check the solenoid connector on External Hydraulic Valve 5 for dirt, corrosion, or loose pins.

2. 2

   Inspect the wiring harness leading to the valve stack for rub points, chafing, or breaks that could cause an open circuit or a short to ground.

3. 3

   Use a multimeter to check the solenoid coil resistance and verify ground integrity.

4. 4

   Check the dashboard for corresponding warning lights (such as amber caution or red critical hydraulic warnings) and verify if the hydraulic function is completely disabled or intermittent.

1. 1

   Locate Valve 5

   Identify the 5th external hydraulic remote valve (spool slice) on the rear hydraulic stack.

2. 2

   Disconnect Power

   Turn off the tractor and disconnect the battery to prevent electrical shorts during repair.

3. 3

   Address Wiring (If Applicable)

   If the diagnostic checks revealed a broken wire or corroded connector, repair the harness or replace the pigtail connector.

4. 4

   Replace the Solenoid/Spool Valve

   If the wiring is intact but the coil failed the resistance test, remove the retaining hardware holding the solenoid coil or the electric spool slice to the valve block. Install the replacement solenoid coil or complete spool slice.

5. 5

   Reassemble and Program

   Reconnect the wiring harness. Note that if a complete electric spool slice is replaced on certain models, it may need to be programmed to the tractor's ECU.

6. 6

   Clear Codes

   Use a compatible diagnostic tool to clear the 0A.50.23 / 0A.51.23 fault codes from the system and test the hydraulic remote for proper operation.