Massey Ferguson 0A.31.19: External Hydraulic Valve 3 Issue

Connection problem or fault on the number 3 external hydraulic spool valve. This can result in slow, weak, or completely dead remote hydraulics when attempting to operate implements.

• 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

   Stop the engine, remove the key, and wait for all moving parts to stop before inspecting the hydraulic system

2. 2

   Inspect the wiring harness and connector at External Hydraulic Valve 3 for corrosion, loose pins, or broken wires

3. 3

   Check the hydraulic oil for contamination (dirt or debris) and inspect the hydraulic/transmission oil filter for blockages

4. 4

   Inspect the hydraulic couplers for damage or blockages, and check the hoses for wear or leaks

5. 5

   Determine if the valve is slow (restricted flow), weak (pressure problem/relief valve fault), or dead (stuck valve or electrical failure)

1. 1

   Verify fault code

   Connect a compatible Massey Ferguson diagnostic tool to the tractor to verify the 0A.31.19 code is active.

2. 2

   Locate valve

   Locate External Hydraulic Valve 3 on the rear hydraulic block.

3. 3

   Clean electrical contacts

   Disconnect the electrical harness to the valve and clean the contacts. Reconnect and test to see if the code clears.

4. 4

   Replace filter and check fluid

   If the electrical connection is sound but the valve remains unresponsive, replace the hydraulic/transmission filter and check the fluid levels.

5. 5

   Replace valve or switch

   If the issue persists, the electric spool valve control switch or the hydraulic valve itself has likely failed internally and must be replaced.

6. 6

   Test and clear codes

   Install the replacement valve or switch, clear the DTCs using the diagnostic tool, and test the implement to ensure proper hydraulic flow and pressure.