Massey Ferguson 0A.62.22 – Onboard diagnostic system: External Hydraulic Valve 6 Issue

A malfunction associated with the 6th rear remote hydraulic spool valve, typically caused by an electrical connection problem to the valve solenoid, a mechanically stuck/jammed spool valve due to debris, or a restriction in hydraulic fluid flow.

• 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 inspect the remote valve filter for blockages.

2. 2

   Inspect the wiring harness and electrical connector going to External Valve 6 for loose connections, frayed wires, or corrosion.

3. 3

   Check the valve externally for visible fluid leaks.

4. 4

   Test if the valve is physically sticking or jamming, which is often caused by internal wear or debris in the hydraulic fluid.

1. 1

   Relieve Pressure

   Ensure the tractor is turned off and relieve all hydraulic system pressure before servicing the remote valves.

2. 2

   Clean Connections

   Disconnect the electrical harness at Valve 6. Clean the contacts with electrical contact cleaner, ensure a tight fit, and reconnect.

3. 3

   Service Filters and Fluid

   If the hydraulic fluid is contaminated, flush the system and replace it with clean Universal Tractor Transmission Oil (UTTO). Replace the remote valve filter.

4. 4

   Valve Servicing

   If the valve is mechanically stuck or leaking, remove the valve block. Depending on the severity of the internal wear, clean the spool and replace the O-rings/seals.

5. 5

   Valve Replacement

   If the solenoid has failed electrically or the internal spool is heavily scored, replace the entire External Hydraulic Valve 6 assembly.

6. 6

   Clear Codes

   Use an AGCO-compatible diagnostic tool (such as AGCO Tech Connect Diagnostics) to clear the 0A.62.22 code and run a functional test on the remote hydraulics.