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Home >> Lincoln >> 2019 >> Nautilus Base, FWD >> Repair and Diagnosis >> External Pages >> Different variant/trim >> Section 5 (Automatic Transmission - 8-Speed Automatic Transmission - 8F57 (2 Of 2)) >> Overhaul >> Main Control Valve Body

Main Control Valve Body

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Special Tool(s) / General Equipment 

Flat Headed Screw Driver

Materials 

Name Specification
Motorcraft® MERCON® ULV Automatic Transmission FluidXT-12-QULV WSS-M2C949-A, MERCON® ULV

Main Control Valve Body and Solenoid Body 

  1. Unlock and disconnect the solenoid electrical connectors and the TFT sensor electrical connector. Disconnect the transmission fluid pressure sensor electrical connector. Remove the bolt and the wiring harness assembly.
    GFD428478Courtesy of FORD MOTOR COMPANY
  2. Remove the bolts and the transmission fluid pressure sensor.
    GFD428479Courtesy of FORD MOTOR COMPANY
  3. Remove the bolt and the TFT sensor.
    GFD428480Courtesy of FORD MOTOR COMPANY
  4. Remove the bolts and the park lock pawl solenoid.
    GFD428390Courtesy of FORD MOTOR COMPANY
  5. Remove the solenoid body-to-main control bolts.
    GFD428481Courtesy of FORD MOTOR COMPANY
  6. Remove the main control valve body from the solenoid body.
    GFD428482Courtesy of FORD MOTOR COMPANY

    Main Control Valve Body and Solenoid Body 

  7. Remove the bolts and the solenoid body to main control valve body separator plate.
    GFD428483Courtesy of FORD MOTOR COMPANY
  8. Remove the bypass valve and spring.
    GFD428484Courtesy of FORD MOTOR COMPANY
  9. Remove the bolts and the solenoid body to main control valve body separator plate.
    GFD428485Courtesy of FORD MOTOR COMPANY
  10. Remove the following items.

    1. Solenoid damper
    2. Bypass valve and spring
    3. Check ball

    GFD428486Courtesy of FORD MOTOR COMPANY
  11. NOTE: Remove the valves by tapping the valve body on the palm of the hand to slide the valves out of the bores or by threading a 4-mm bolt into the valves and pulling them out. If it is necessary to use a pick, use extreme caution to prevent damaging the valves or valve bores. If necessary, disassemble parts of the main control valve body in small groups. Arrange the parts as they are removed to avoid mixing similar pieces.

    Compress the valve springs with a screwdriver and remove the retainers with a magnet. Use a pick to remove the bypass valve retainer. Remove the individual valves and springs from the main control valve body by tapping the valve body on the palm of the hand to slide the valves out of the bores. Use the General Equipment: Flat Headed Screw Driver

    GFD428487Courtesy of FORD MOTOR COMPANY
  12. NOTE: Do not stone or polish any valves or damage to the valves can occur. If the valves do not move freely, install a new assembly.

    Clean the valves, springs and main control valve body.

    GFD428488Courtesy of FORD MOTOR COMPANY
  13. Install the valve body valves, springs and retaining clips in the main control valve body. For valve and spring locations. Refer to: Main Control Valve Body .
    GFD428489Courtesy of FORD MOTOR COMPANY
  14. Install the following items.

    1. Solenoid damper
    2. Bypass valve and spring
    3. Check ball

    GFD428486Courtesy of FORD MOTOR COMPANY
  15. Install the seperator plate and the bolts.

    Torque

    : 80 lb.in (9 Nm)

    GFD428485Courtesy of FORD MOTOR COMPANY
  16. Install the spring and bypass valve
    GFD428484Courtesy of FORD MOTOR COMPANY
  17. Install the solenoid body to main control valve body separator plate and the bolt.

    Torque

    : 80 lb.in (9 Nm)

    GFD428483Courtesy of FORD MOTOR COMPANY

    Solenoid Body 

  18. Compress the valve spring with a screwdriver and remove the retainer with a magnet. Remove the valve and spring from the solenoid body by tapping the solenoid body on the palm of the hand to slide the valve out of the bore.
    GFD428490Courtesy of FORD MOTOR COMPANY
  19. Using a paint marker, number the solenoids and the solenoid body to correspond with the ports from which the solenoids are located in the solenoid body.
    GFD428391Courtesy of FORD MOTOR COMPANY
  20. Remove and discard the transmission shift solenoid clip and remove the transmission shift solenoid.
    GFD428392Courtesy of FORD MOTOR COMPANY
  21. Remove the shift solenoids and valves.
    GFD428491Courtesy of FORD MOTOR COMPANY
  22. NOTE: Failure to install the components in the correct location will result in harsh/soft or no shifts or damage to the transmission.

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

    GFD427923Courtesy of FORD MOTOR COMPANY
  23. Remove and discard the transmission solenoid hold down clamp bolts, remove the clamps and transmission solenoids.

    1. The TCC solenoid is identified by the green electrical connector.
    2. The LPC solenoid is identified by the blue electrical connector.

    GFD428393Courtesy of FORD MOTOR COMPANY
  24. Inspect the solenoid screens for debris that may restrict fluid flow through the screen.
    GFD427925Courtesy of FORD MOTOR COMPANY
  25. NOTE: Be careful not to wash the numbers from the solenoids or the solenoid body. Failure to install the solenoids in the ports they were originally in can result in damage to the transmission or a harsh shift.
    NOTE: Do not stone or polish any valves or damage to the valves can occur. If the valves do not move freely during assembly, install a new solenoid body.

    Clean and inspect the solenoid body, solenoids and valve assemblies for damage.

    GFD428492Courtesy of FORD MOTOR COMPANY
  26. Install the transmission shift control valves and the transmission shift control solenoids and new clips.
    GFD428493Courtesy of FORD MOTOR COMPANY
  27. NOTE: The A-F clutches use linear force solenoids, the CIDAS are all normally low solenoids.

    1. SSF solenoid part number 7J136
    2. SSE solenoid part number 7J136
    3. SSA solenoid part number 7J136
    4. SSC solenoid part number 7J136
    5. SSB solenoid part number 7J136

    GFD428395Courtesy of FORD MOTOR COMPANY
  28. Lubricate the transmission solenoid O-rings with clean transmission fluid.

    Material

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

    GFD427928Courtesy of FORD MOTOR COMPANY
  29. NOTE: If installing a new Variable Force Solenoid (VFS), determine the base part number of the solenoid(s). The TCC solenoid is a normally low pressure solenoid. The LPC solenoid is a normally high pressure solenoid.

    Install the transmission solenoids, hold down clamps and new bolts.

    1. The TCC solenoid is identified by the green electrical connector. The TCC solenoid part number 7G136.
    2. The LPC solenoid is identified by the blue electrical connector. The LPC solenoid part number 7G383.

      Torque

      : 89 lb.in (10 Nm)

    GFD428494Courtesy of FORD MOTOR COMPANY
  30. Install the valve, spring and retainer in the solenoid body
    GFD428495Courtesy of FORD MOTOR COMPANY

    Main Control Valve Body and Solenoid Body 

  31. Install the main control body to the solenoid body.
    GFD427930Courtesy of FORD MOTOR COMPANY
  32. Install the solenoid body-to-main control bolts.

    Torque

    : 89 lb.in (10 Nm)

    GFD428481Courtesy of FORD MOTOR COMPANY
  33. Install the park lock pawl solenoid and bolts.

    Torque

    : 89 lb.in (10 Nm)

    GFD428390Courtesy of FORD MOTOR COMPANY
  34. Lubricate transmission temperature sensor O-ring with clean transmission fluid.

    Material

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

    GFD428461Courtesy of FORD MOTOR COMPANY
  35. Install the TFT sensor and bolt.

    Torque

    : 89 lb.in (10 Nm)

    GFD428480Courtesy of FORD MOTOR COMPANY
  36. Lubricate transmission fluid pressure sensor O-rings with clean transmission fluid.

    Material

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

    GFD428496Courtesy of FORD MOTOR COMPANY
  37. Install the transmission fluid pressure sensor and bolts.

    Torque

    : 89 lb.in (10 Nm)

    GFD428479Courtesy of FORD MOTOR COMPANY
  38. Install the transmission wiring harness assembly and install the bolt. Connect the transmission shift solenoid electrical connectors and the TFT sensor electrical connector and lock the connectors. Connect the transmission fluid pressure sensor electrical connector.

    Torque

    : 89 lb.in (10 Nm)

GFD428478Courtesy of FORD MOTOR COMPANY