T4150

Massey Ferguson T4150 – TRANS: Transmission Filter Blocked DYNA VT (TRANS)

Issue description

The high-pressure transmission oil filter blockage switch (X20 switch) has detected that the transmission filter is blocked or obstructed.

Applies to these machines

  • 7622
  • Interim Tier 4 (2012-2015)
  • 7614
  • 7615
  • 7620
  • 7616
  • 7618
  • 7619
  • 7626
  • 7624
  • 6614
  • 6615
  • 6616
  • 6713
  • 6714
  • 6715
  • 6716
  • 6718
  • 7485
  • 7490
  • 7495
  • 7497
  • 7499
  • 7715
  • 7716
  • 7718
  • 7719
  • 7720
  • 7722
  • 7724
  • 7726
  • 8660
  • 8670
  • 8680
  • 8690
  • 8727
  • 8730
  • 8732
  • 8735
  • 8737

Check the cause

  1. Check the X20 Blockage Switch to verify if the high-pressure transmission oil filter blockage switch is faulty or sending an incorrect signal.

  2. Inspect the transmission hydraulic oil quality to see if it is heavily polluted, degraded, or contaminated, which would cause premature filter blockage.

Repair steps

  1. Locate filter

    Locate the high-pressure transmission hydraulic filter (situated at the top of the tank on Dyna-VT models).

  2. Remove filter

    Remove the blocked transmission filter element.

  3. Drain and refill oil

    If the transmission oil was found to be polluted during the diagnostic check, drain the transmission oil and refill it with an approved fluid (such as AGCO V-TRANS PLUS 10W-40 or Terrac Extra).

  4. Install new filter

    Install the new Dyna-VT transmission filter element.

  5. Replace switch

    If the X20 transmission filter blockage switch was found to be faulty during testing, replace the switch.

  6. Clear codes and test

    Clear the fault codes from the Autotronic 4 transmission controller and test the tractor under load to ensure the code does not return.

Parts you might need

(6)
  • Dyna-VT Hydraulic Transmission Filter

    3909472M91

    OEM

  • Dyna-VT Hydraulic Transmission Filter

    4351314M1

    OEM

  • Hydraulic Filter Assembly (OEM Kit)

    4387670M91

    Includes filter, casing, and associated hardware for certain 6700S/7700S models

  • Dyna-VT Hydraulic Transmission Filter (Aftermarket)

    HD 722

    MANN-FILTER

  • Transmission Filter Blockage Switch

    Referred to in OEM manuals as the X20 Switch (order via dealer using X20 designation)

  • AGCO V-TRANS PLUS 10W-40 Transmission Fluid

    OEM recommended for Dyna-VT

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