0A.52.25

Massey Ferguson 0A.52.25: External Hydraulic Valve 5 Issue

Issue description

Indicates a malfunction, typically an electrical fault (such as a connection problem, open circuit, or short) or a mechanical failure associated with the 5th external hydraulic remote valve (spool valve).

Applies to these machines

  • 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

Check the cause

  1. Inspect the wiring harness and electrical connector leading to External Hydraulic Valve 5 for corrosion, damage, or loose pins

  2. Use a compatible Massey Ferguson diagnostic tool to retrieve the code and monitor live data from the valve to see if it is receiving a signal

  3. Swap the electrical connection with a known good valve (e.g., Valve 4) to see if the fault code follows the valve or stays with the wiring harness

Repair steps

  1. Disconnect battery

    Disconnect the battery to ensure safety before working on the electrical system.

  2. Repair or replace wiring harness connector

    Repair or replace the wiring harness connector to Valve 5 if a connection issue is found.

  3. Remove faulty valve

    If the wiring is intact, remove the faulty electric spool slice/valve from the rear hydraulic valve block.

  4. Install replacement spool valve

    Install the replacement spool valve. Note: Some modern electric spool slices require programming/calibration to the tractor's ECU after installation.

  5. Clear DTCs and test

    Clear the DTCs using a compatible diagnostic tool and test the hydraulic remote for proper operation.

Parts you might need

(3)
  • Electric Spool Slice

    3797234M6

    Compatible with 6400, 6600, and 7400 series. Note: This part requires programming to the tractor upon installation.

  • Hydraulic Valve / Spool Distribution Valve

    3713928M5

    Compatible with 3600, 8100, and 8200 series.

  • External Hydraulic Valve / Electric Spool Slice / Hydraulic Remote Valve

    Generic part name

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