Massey Ferguson 0A.6X.27 – onboard diagnostic system: External Hydraulic Valve 6 Issue

Indicates a connection problem, pressure irregularity, or mechanical fault (such as sticking or jamming) on the 6th external hydraulic remote/spool valve circuit.

• 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 hydraulic fluid (UTTO) level and condition, and ensure hydraulic filters are clean (change every 300-500 hours) as contaminated fluid can cause valves to stick.

2. 2

   Inspect the #6 external valve, quick couplers, hydraulic hoses, and piston seals for visible fluid leaks that can cause system pressure loss.

3. 3

   Check the tightness of the electrical and hydraulic connections at the pump and the specific control valve to rule out aeration or connection faults.

4. 4

   Test if the hydraulic controls are unresponsive or if the valve is physically jammed due to debris or internal wear.

1. 1

   Relieve Pressure

   Ensure the tractor is off and relieve all hydraulic system pressure before beginning work.

2. 2

   Remove Existing Valve

   Remove the bolts securing the cap or the faulty valve on the hydraulic lift cover.

3. 3

   Detach Standpipe

   Carefully detach the valve from the standpipe. Ensure that the standpipe is not dislodged from its seat in the hydraulic pump during removal.

4. 4

   Separate Components

   If applicable, separate the valve and the base section by removing the securing bolts.

5. 5

   Install New Base/Valve

   Fit the standpipe into the inlet port of the new valve's base plate.

6. 6

   Mount to Lift Cover

   Fit the base plate to the lift cover, ensuring the standpipe is correctly located into its seat on the hydraulic pump.

7. 7

   Secure Assembly

   Secure the base plate to the lift cover, then secure the control valve to the base plate using the provided bolts.

8. 8

   Test System

   Reconnect all hoses, top off the UTTO hydraulic fluid, bleed the system of air, and test the #6 remote for leaks and proper operation.