Massey Ferguson A.5X.2A: External Hydraulic Valve 5 Issue

A malfunction, connection problem, or pressure failure associated with the 5th external hydraulic remote/spool valve on the tractor's hydraulic circuit.

• 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 UTTO hydraulic fluid for dirt or contamination and inspect hydraulic/transmission filters for blockages.

2. 2

   Inspect quick couplers on Valve 5 for damage, blockages, or leaks, and check connected hydraulic hoses for wear.

3. 3

   Test valve operation to determine if only Valve 5 is dead/sticking (isolating the issue to the valve or electrical connection) or if the entire system is weak (pointing to a pump or main relief valve).

4. 4

   Check the wiring harness and electrical connector plugging into External Valve 5 for corrosion, bent pins, or broken wires.

1. 1

   Relieve Pressure

   Ensure the tractor is turned off, the implement is lowered to the ground, and all hydraulic pressure is relieved from the system by cycling the remote levers/buttons.

2. 2

   Drain/Catch Fluid

   Place a large catch pan beneath the rear remote valve block, as removing the valve will result in fluid loss.

3. 3

   Disconnect Lines

   Disconnect the hydraulic hoses and the electrical connector from External Hydraulic Valve 5.

4. 4

   Remove the Valve

   Unbolt the Valve 5 spool section from the hydraulic remote valve stack.

5. 5

   Rebuild or Replace

   Depending on the severity of the wear, either install a completely new spool valve section or rebuild the existing valve using an OEM spool valve repair kit (replacing internal O-rings and seals).

6. 6

   Reinstall

   Bolt the new or rebuilt valve back into the stack. Reconnect the hydraulic lines and the electrical harness.

7. 7

   Service Fluids

   Replace the hydraulic filter and top off the system with clean UTTO hydraulic fluid (e.g., 10W40 UTTO).

8. 8

   Test

   Start the tractor, allow the fluid to warm up, and test Valve 5 with an implement to ensure there are no leaks and that the fault code clears.