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Home >> Ford >> 2021 >> Explorer Limited Hybrid, 4WD >> Repair and Diagnosis >> External Pages >> Different car >> Section 728 (Automatic Transmission - 10-Speed Automatic Transmission - 10R80 (2 Of 2)) >> Overhaul >> Main Control Valve Body

Main Control Valve Body

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Special Tool(s) / General Equipment 

GFD514433Courtesy of FORD MOTOR COMPANY
 307-299 Alignment Pins, Valve Body TKIT-1994-LMH/MH2 TKIT-1994-F TKIT-1994-FLM/FM

Materials 

Name Specification
Motorcraft® MERCON® ULV Automatic Transmission Fluid XT-12-QULV WSS-M2C949-A, MERCON® ULV
  1. For solenoid and valve identification. Refer to: Main Control Valve Body .
  2. Disconnect the internal wiring harness.

    1. Slide the plastic lock to the unlock position. While pressing the plastic tab, disconnect the electrical connector.
    2. Remove internal wiring harness retaining bolt.
    3. Disconnect the internal wiring harness retainer.

    GFD514791Courtesy of FORD MOTOR COMPANY
  3. Disconnect the internal wiring harness electrical connectors.

    • Slide the plastic lock to the unlock position. While pressing the plastic tab, disconnect the electrical connector.

    GFD514402Courtesy of FORD MOTOR COMPANY
  4. Release the retainer and remove the internal wiring harness assembly.
    GFD514403Courtesy of FORD MOTOR COMPANY
  5. Remove the TFT sensor.

    1. Lift plastic tab.
    2. Rotate the TFT sensor clockwise.
    3. Remove the TFT sensor.

    GFD514435Courtesy of FORD MOTOR COMPANY
  6. Remove the main control assembly to transmission fluid pump seal.
    GFD514736Courtesy of FORD MOTOR COMPANY
  7. NOTE: The orientation of the solenoids before removal.

    Remove and discard the bolts. Remove the solenoid retaining plate, TCC solenoid and the LPC solenoid.

    GFD514792Courtesy of FORD MOTOR COMPANY
  8. Remove bolts and the shift solenoid retaining plate.
    GFD514793Courtesy of FORD MOTOR COMPANY
  9. Remove the valve body bolts.
    GFD514794Courtesy of FORD MOTOR COMPANY
  10. Remove and discard the valve channel plate.
    GFD514795Courtesy of FORD MOTOR COMPANY
  11. NOTE: Many components and surfaces in the main control valve body are precision machined. Use care when handling the upper and lower valve body or damage can occur to the machined surfaces.

    Separate the upper valve body from the lower valve body.

    GFD514796Courtesy of FORD MOTOR COMPANY

    Lower Valve Body 

  12. Remove bolts and discard the valve body separator plate.
    GFD514797Courtesy of FORD MOTOR COMPANY
  13. NOTE: The orientation of the valves and springs.

    Remove the following items:

    1. Check valve assemblies
    2. LPC damper assembly
    3. TCC damper

    GFD514442Courtesy of FORD MOTOR COMPANY
  14. NOTE: Note the location of the retaining clips, caps, valves and valve springs for assembly. Failure to install the components in the correct location will result in harsh/soft or no shifts or damage to the transmission.

    Remove the retaining clips, cap, valves and valve springs from each bore of the valve body assembly.

    GFD514798Courtesy of FORD MOTOR COMPANY
  15. NOTE: Solenoids and clutch control valves may visually appear the same but they are calibrated from the factory and are not all the same. Use care not to assemble the main control assembly incorrectly. Incorrect solenoid and clutch control valve installation results in poor transmission shift quality.

    Number the solenoids 1 through 6 and number the main control solenoid ports 1 through 6 to correspond to the solenoids.

    GFD514445Courtesy of FORD MOTOR COMPANY
  16. NOTE: Note the location of the clutch control valves and solenoids for assembly.

    Remove and discard the shift solenoid retainers. Remove the shift solenoids and clutch control valves.

    GFD514446Courtesy of FORD MOTOR COMPANY

    Upper Valve Body 

  17. NOTE: Note the location of the retaining clips, caps, valves and valve springs for assembly. Failure to install the components in the correct location will result in harsh/soft or no shifts or damage to the transmission.

    Remove the retaining clips, cap, valves and valve springs from each bore of the valve body assembly.

    GFD514447Courtesy of FORD MOTOR COMPANY

    Upper and Lower Valve Body 

  18. NOTE: Many components and surfaces in the main control valve body are precision machined. Use care when cleaning the lower valve body or damage can occur to the machined surfaces.

    Clean and inspect the lower valve body for damage. Inspect the passages and valves for damage and clean any excessive debris. Install a new component if necessary.

    GFD514799Courtesy of FORD MOTOR COMPANY
  19. Clean and inspect the upper valve body for damage. Inspect the passages and valves for damage and clean any excessive debris. Install a new component if necessary.
    GFD514449Courtesy of FORD MOTOR COMPANY

    Upper Valve Body 

  20. NOTE: Failure to install the components in the correct location will result in harsh/soft or no shifts or damage to the transmission.

    Install the valves, valve springs, caps and the retaining clips into the correct valve body valve bore.

    GFD514447Courtesy of FORD MOTOR COMPANY

    Lower Valve Body 

  21. NOTE: Failure to install the components in the correct location will result in harsh/soft or no shifts or damage to the transmission.

    Install the valves, valve springs, cap and the retaining clips into the correct valve body valve bore.

    GFD514798Courtesy of FORD MOTOR COMPANY
  22. NOTE: Solenoids are calibrated from the factory and are not all the same. To replace a solenoid, match the band number with the original solenoid or harsh shifts or damage to the transmission can occur.

    If new solenoids are needed, identify the solenoid band number.

    GFD514272Courtesy of FORD MOTOR COMPANY
  23. NOTE: Failure to install the components in the correct location will result in harsh/soft or no shifts or damage to the transmission.

    Install the clutch control valves, and the shift solenoids in the corresponding marked location. Install the new shift solenoid retainers with the flat side towards the solenoids.

    1. Retainer flat side

    GFD514450Courtesy of FORD MOTOR COMPANY
  24. NOTE: The orientation of the valves and springs.

    Install the following items:

    1. Check valve assemblies
    2. LPC damper assembly
    3. TCC damper

    GFD514442Courtesy of FORD MOTOR COMPANY
  25. Using the special tools align the new valve body spacer plate onto the lower valve body and install the bolts. Use Special Service Tool: 307-299 Alignment Pins, Valve Body.

    Torque

    : 71 lb. in (8 Nm)

    GFD514800Courtesy of FORD MOTOR COMPANY

    Upper and Lower Valve Body 

  26. Align the guide pins on the upper valve body with the Alignment holes in the lower valve body.
    GFD514801Courtesy of FORD MOTOR COMPANY
  27. Install the new valve body channel plate.
    GFD514802Courtesy of FORD MOTOR COMPANY
  28. Loosely install the valve body bolts.
    GFD514794Courtesy of FORD MOTOR COMPANY
  29. Install the shift solenoid retaining plate and loosely install the bolts.
    GFD514793Courtesy of FORD MOTOR COMPANY
  30. Tighten the bolts in the sequence shown.

    Torque

    : 106 lb. in (12 Nm)

    Fig 1: Valve Body Bolts Tightening Sequence
    GFD514803Courtesy of FORD MOTOR COMPANY
  31. Push the internal wiring harness into the retainer.
    GFD514456Courtesy of FORD MOTOR COMPANY
  32. Install the TFT sensor.

    1. Position the TFT sensor in the main control valve body.
    2. Rotate the TFT sensor counter clockwise until the plastic tab locks into place.

    GFD514457Courtesy of FORD MOTOR COMPANY
  33. Connect the internal wiring harness electrical connectors.

    • Slide the plastic lock to the locked position.

    GFD514405Courtesy of FORD MOTOR COMPANY
  34. NOTE: Solenoids are calibrated from the factory and are not all the same. To replace a solenoid, match the replacement solenoid type (normally high/normally low) and the band number with the original solenoid or harsh shifts or damage to the transmission can occur.

    If new solenoids are needed, identify which type (normally high/normally low) of solenoid it is and the solenoid band number.

    GFD514277Courtesy of FORD MOTOR COMPANY
    1. Inspect the solenoid screens for debris that may restrict fluid flow
    2. Lubricate the solenoid O-ring seals.

      Material

      : Motorcraft® MERCON® ULV Automatic Transmission Fluid / XT-12-QULV (WSS-M2C949-A,) (MERCON® ULV)

    GFD514278Courtesy of FORD MOTOR COMPANY
  36. Install the TCC solenoid, LPC solenoid, solenoid retaining plate and the new bolts.

    Torque

    : 80 lb. in (9 Nm)

    GFD514804Courtesy of FORD MOTOR COMPANY
  37. Connect the internal wiring harness.

    1. Slide the plastic lock to the locked position.
    2. Connect the internal wiring harness retainer.

    GFD514805Courtesy of FORD MOTOR COMPANY
  38. Install the main control assembly to transmission fluid pump seal.
GFD514736Courtesy of FORD MOTOR COMPANY
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