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Home >> Ford >> 2021 >> Explorer ST >> Repair and Diagnosis >> Engine Mechanical >> Mechanical >> Engine - 3.0L ECOBOOST >> Disassembly And Assembly Of Subassemblies >> Piston >> Disassembly
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Disassembly And Assembly Of Subassemblies: Piston: Disassembly

NOTE: The RH and LH pistons are similar in appearance but

differ in design specifications. The pistons must be installed in the correct cylinder bank or serious damage to the engine will occur.

  1. Remove and discard the piston rings.
    GFD511560Courtesy of FORD MOTOR COMPANY
  2. Remove and discard the piston pin retainers.

    • Remove the piston pin.

    GFD511561Courtesy of FORD MOTOR COMPANY
  3. NOTE: If the piston and connecting rod are to be reinstalled, they must be assembled in the same orientation. Mark the piston orientation to the connecting rod for reassembly.

    Separate the piston from the connecting rod.

    GFD511562Courtesy of FORD MOTOR COMPANY
  4. Clean and inspect the piston and connecting rod. Refer to: Piston Inspection .
GFD511563Courtesy of FORD MOTOR COMPANY