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HOMESERVICE MANUALSFORD2021EXPEDITION PLATINUM, RWDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 879 (AUTOMATIC TRANSMISSION - 10-SPEED AUTOMATIC TRANSMISSION - 10R80 (DTC CHARTS 5.0L - ASSEMBLY))REMOVAL AND INSTALLATIONMAIN CONTROL VALVE BODYINSTALLATION
2021 Ford Expedition Platinum, RWD

Main Control Valve Body: Installation

2021 Ford Expedition Platinum, RWDSECTION Installation
WARNING: This page is about a different car, the 2021 Ford F-150. However, it is still accessible from the selected car via links, so may be relevant.
  1. Install the main control assembly to transmission fluid pump seal.
    GFD558710Courtesy of FORD MOTOR COMPANY
  2. NOTE: Do not install a 71 mm length bolt in the location shown or the transmission clutch and planetary container will be damaged and result in transmission failure.

    Loosely install the main control valve body.

    1. Connect the internal wiring harness electrical connector while installing the main control valve body.
    2. Align the TR sensor with the park pawl lock valve.
    3. Align the guide pins on the main control valve body with the alignment holes in the transmission case.
    4. Loosely install the 68 mm length main control-to-transmission case bolts.

    GFD558711Courtesy of FORD MOTOR COMPANY
  3. Lock the internal wiring harness electrical connector.
    GFD558708Courtesy of FORD MOTOR COMPANY

    Auto-Start-Stop vehicles 

  4. Install the transmission fluid auxiliary pump tube seal.
    GFD558707Courtesy of FORD MOTOR COMPANY
  5. Inspect the transmission fluid auxiliary pump tube O-ring.
    GFD558712Courtesy of FORD MOTOR COMPANY
  6. Install the transmission fluid auxiliary pump tube and loosely install the bolt.
    GFD558706Courtesy of FORD MOTOR COMPANY

    All vehicles 

    1. Tighten the bolts No. 1-8 in the sequence shown.

      Torque: 89 lb.in (10 Nm)

    2. If equipped with Auto-Start-Stop, tighten bolt No. 9

      Torque: 106 lb.in (12 Nm)

    Fig 1: Main Control Valve Body Bolts Tightening Sequence
    GFD558713Courtesy of FORD MOTOR COMPANY
  8. Install the transmission fluid pan gasket and filter. Refer to: Transmission Fluid Pan, Gasket and Filter . Refer to: Transmission Fluid Pan, Gasket and Filter - 3.0L Power Stroke Diesel .
  9. NOTE: When the repair is complete, the park overide release must be returned to the NORMAL OPERATING POSITION or vehicle damage can occur.

    Verify that the park override release is in the normal operating position. Refer to: Transmission Park by Wire Manual Release .

  10. NOTE: The solenoid body strategy data file and solenoid body identification must be updated anytime a new main control valve body is installed. A new main control valve body service tag must be installed over the current main control valve body service tag on the transmission case.

    If a new main control valve body was installed, download a new transmission strategy. Refer to: Transmission Strategy Download .

RENDER: 1.0x

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When to See a Mechanic

Stop DIY work and contact a certified mechanic immediately if any of the following apply:

  • • You smell fuel, burning insulation, or see smoke.
  • • Brakes feel soft, pull hard to one side, or make grinding noises.
  • • The engine overheats, stalls repeatedly, or misfires under load.
  • • You are missing required tools, torque specs, or safe lifting equipment.
  • • You are not confident in the next step or safety outcome.