Massey Ferguson 0A.5X.1B: External Hydraulic Valve 5 Issue

Malfunction within the circuit or mechanical operation of the 5th external hydraulic remote (spool valve). Likely triggered by an electrical fault, wiring disconnect, or a sensor reading out of range on the number 5 auxiliary 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

   Check the wiring harness and electrical connector going to External Valve #5 for corrosion, bent pins, or broken wires

2. 2

   Test the solenoid on Valve 5 for proper resistance using a multimeter

3. 3

   Ensure the tractor's hydraulic fluid is at the correct level and the hydraulic filters are not clogged

4. 4

   Check if the spool valve is physically stuck due to debris or internal wear

1. 1

   Depressurize the System

   Turn off the tractor and cycle the hydraulic controls to relieve all residual hydraulic pressure in the system.

2. 2

   Clean the Area

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

3. 3

   Disconnect Electricals

   Unplug the electrical harness connector from the Valve 5 solenoid.

4. 4

   Remove Hydraulic Lines

   Disconnect the hydraulic hoses/lines attached to the valve. Cap the lines immediately to prevent fluid loss and contamination.

5. 5

   Unbolt the Valve

   Remove the tie-bolts or mounting hardware holding the #5 valve section to the hydraulic valve stack/block.

6. 6

   Install the New Valve

   Replace the O-rings between the valve sections. Install the new external hydraulic valve and torque the mounting bolts to OEM specifications.

7. 7

   Reassemble and Bleed

   Reconnect the hydraulic lines and the electrical harness. Top off the hydraulic fluid if necessary. Start the tractor and cycle the valve to bleed any trapped air.

8. 8

   Clear Codes

   Use a compatible diagnostic tool to clear the 0A.5X.1B code from the system.