A.6X.28

Massey Ferguson A.6X.28 – Implement/Hydraulic Control Module or Transmission ECU: External Hydraulic Valve 6 Issue

Issue description

Indicates a fault or connection problem within the tractor's external hydraulic remote valve system, specifically isolating the issue to Valve #6.

Applies to these machines

  • 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

Check the cause

  1. Retrieve and verify the exact alphanumeric code (e.g., 0A.60.28) using a compatible Massey Ferguson diagnostic tool

  2. Inspect electrical connections at Valve 6 for damaged pins, frayed wires, or loose connectors

  3. Check the hydraulic reservoir fluid level and inspect for any external leaks around the valve block

Repair steps

  1. Relieve System Pressure

    Lower all implements. Pump out the hydraulic reservoir through the valve by pulling the lever up (have a large bucket ready) or use the system's pressure relief method.

  2. Disconnect Electricals

    Unplug the wiring harness connected to External Hydraulic Valve 6.

  3. Remove Hydraulic Lines

    Disconnect the hydraulic hoses from the valve block.

  4. Remove the Valve

    Unbolt the external hydraulic valve assembly from the lift cover/hydraulic block.

  5. Replace Seals/Valve

    Replace the faulty valve or rebuild it. Always replace the O-rings (e.g., the hydraulic oil pipe to lift cover O-ring).

  6. Reinstall

    Mount the new valve, reconnect the hydraulic hoses using the proper connector kits, and plug in the electrical harness.

  7. Refill and Clear

    Refill the hydraulic reservoir, bleed the system if necessary, and use a diagnostic tool to clear the DTC.

Parts you might need

(8)
  • External Hydraulic Valve (Generic)

    Specific OEM part numbers vary heavily by the tractor's exact hydraulic configuration (e.g., single spool vs. double acting).

  • O-ring (Hydraulic oil pipe to lift cover)

    195561M1

    Size: 9.5 x 1.6 mm

  • Hose Connector Kit (for external hydraulic valve)

    H10167
  • Hydraulic Diverter Valve

    357018A
  • External Hydraulic Valve Kit (Single spool, double acting)

    TS3200M

    Aftermarket/Tisco kit used for conversions

  • Quick Couplers - Female body half

    8250-4

    1/2" NPT

  • Quick Couplers - Male tip half

    8010-15
  • Quick Couplers - Female body half

    8250-15

    3/4"-16 SAE

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