2007 Ford Expedition RWDFACTORY OEM SERVICE PROCEDURE

Mechatronic Assembly: Assembly

CAUTION: Do not touch the electrical connector pins or the exposed solenoid tabs on the transmission control module (TCM). An electrostatic discharge may occur and may cause damage to the TCM/mechatronic assembly.

Mechatronic assembly upper halfΒ 

    NOTE: Many components and surfaces in the mechatronic valve body are precision machined. Careful handling during disassembly, cleaning, inspection and assembly will prevent unnecessary damage to machined surfaces.
  1. Install the clips, caps, valves and spring into each bore. Refer to the preceding exploded views.
  2. Mechatronic assembly lower halfΒ 

    NOTE: Many components and surfaces in the mechatronic valve body are precision machined. Careful handling during disassembly, cleaning, inspection and assembly will prevent unnecessary damage to machined surfaces.
  3. Install the clips, caps, valves and spring into each bore.
  4. NOTE: Lubricate the O-ring seals of the solenoids with clean automatic transmission fluid when installing them into the valve body.
  5. Install the solenoids into their correct bores as indicated during disassembly.
  6. Fig 1: Locating Solenoids
    GF0022797Courtesy of FORD MOTOR CO.
  7. Install the solenoid bracket and the 8 bolts.
    • Tighten to 6 Nm (53 lb-in).
  8. Fig 2: Locating Solenoid Bracket Bolts
    GF0022796Courtesy of FORD MOTOR CO.
  9. Install into the mechatronic assembly the transmission control valves, check balls and filter screens. Refer to the preceding exploded views.
  10. Install a new separator plate.
  11. Fig 3: Locating Separator Plate
    GF0022795Courtesy of FORD MOTOR CO.
  12. Assemble the lower half and the upper half of the mechatronic assembly.
  13. Install the 19 short bolts into the mechatronic assembly. Tighten the bolts in the sequence shown.
    • Tighten to 6 Nm (53 lb-in).
  14. Fig 4: Tightening Sequence Of Short Bolts
    GF0022798Courtesy of FORD MOTOR CO.
  15. Carefully install the TCM onto the mechatronic assembly.
  16. Install the 6 long bolts into the TCM unit. Tighten the bolts in the sequence shown.
    • Tighten to 6 Nm (53 lb-in).
  17. Fig 5: Tightening Sequence Of Long Bolts
    GF0022799Courtesy of FORD MOTOR CO.
Factory Service Tools

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When to See a Mechanic

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

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