Disassembly And Assembly Of Subassemblies: Piston: Assembly

• 1.
  
  Align the piston-to-connecting rod orientation marks and position the connecting rod in the piston.

• 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.

NOTE: When installing the piston oil control spacer, orient the gap such that the cut ends are pointed toward the top of the piston.
NOTE: The piston compression lower ring should be installed with the "O" mark on the ring face pointing up toward the top of the piston.
• 6.
  Install the piston rings onto the piston as shown below.

  • 1.
    
    Center line of the piston parallel to the wrist pin bore

  • 2.
    
    Upper compression ring gap location

  • 3.
    
    Upper oil control segment ring gap location

  • 4.
    
    Lower oil control segment ring gap location

  • 5.
    
    Expander ring and lower compression ring gap location

Courtesy of FORD MOTOR COMPANY