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Disassembly And Assembly Of Subassemblies: Piston: Assembly

WARNING: This page is about a different car, the 2010 Mercury Milan and 2010 Ford Fusion. However, it is still accessible from the selected car via links, so may be relevant.
  1. Align the piston-to-connecting rod orientation marks, and position the connecting rod in the piston.
    NOTE: The arrow on the top of the piston points towards the front of the engine.
  2. Lubricate the piston pin and pin bore with clean engine oil.
  3. Install the piston pin in the piston and connecting rod assembly.
  4. Install the piston pin retaining clips in the piston.
  5. Lubricate the piston and the new piston rings with clean engine oil.
  6. Install the piston rings onto the piston as shown.
    1. Piston pin
    2. Upper oil control ring gap location
    3. Lower oil control ring gap location
    4. Center line of the piston pin bore and the expander gap
    NOTE: The piston compression upper and lower ring should be installed with the paint mark on the outside diameter circumference of the ring to be positioned on the right side of the ring gap. The lower compression ring can also be installed with the undercut side downward.
    NOTE: The upper and lower compression ring gaps are not controlled for installation.
Fig 1: Identifying Piston Rings Onto Piston Angle
G06272060Courtesy of FORD MOTOR CO.
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