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HOMESERVICE MANUALSFORD2021EDGE SE, 4WDREPAIR AND DIAGNOSISEXTERNAL PAGESDIFFERENT CARSECTION 665 (ENGINE - 5.0L 32V TI-VCT)DISASSEMBLY AND ASSEMBLY OF SUBASSEMBLIESPISTONASSEMBLY
2021 Ford Edge SE, 4WD

Disassembly And Assembly Of Subassemblies: Piston: Assembly

2021 Ford Edge SE, 4WDSECTION Assembly
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. If the piston and/or connecting rod are being installed new, the connecting rod orientation marks and the arrow on the top of the dome of the piston should be facing toward the front of the engine block.
    GFD555787Courtesy of FORD MOTOR COMPANY
  2. Position the piston on the connecting rod.
    GFD555788Courtesy of FORD MOTOR COMPANY
    1. Lubricate the piston pin with clean engine oil.
    2. Install the piston pin.
    GFD555789Courtesy of FORD MOTOR COMPANY
  4. NOTE: The piston pin retainer gap orientation must be toward the top of the piston.

    Install the piston pin retainers.

    GFD555790Courtesy of FORD MOTOR COMPANY
  5. Lubricate the oil control rings with clean engine oil.

    1. Install the upper oil control ring.
    2. Install the oil control expander ring.
    3. Install the lower oil control ring.

    GFD555791Courtesy of FORD MOTOR COMPANY
  6. Lubricate the lower compression ring with clean engine oil and install the ring.

    1. The "O" mark on the ring pointing up toward the top of the piston.
    2. Hook feature will point down toward the bottom of piston.

    GFD555792Courtesy of FORD MOTOR COMPANY
  7. Lubricate the upper compression ring with clean engine oil and install the ring.

    1. The "O" mark on the ring pointing up toward the top of the piston.

    GFD555793Courtesy of FORD MOTOR COMPANY
  8. Position the piston ring gaps.

    1. Center line of the piston parallel to the wrist pin bore.
    2. Upper compression ring gap.
    3. Upper oil control ring gap.
    4. Lower oil control ring gap.
    5. Oil control expander ring and lower compression ring gap.

GFD555794Courtesy of FORD MOTOR COMPANY
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.