Disassembly And Assembly Of Subassemblies: Piston: Assembly

WARNING: This page is about a different car, the 2015 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 piston 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.

Courtesy of FORD MOTOR COMPANY

2.

Install the piston to the connecting rod.

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3.

Lubricate with clean engine oil and install the piston pin.
Material

: Motorcraft ® SAE 5W-20 Premium Synthetic Blend Motor Oil / XO-5W20-QSP (WSS-M2C945-A)

Courtesy of FORD MOTOR COMPANY

4.

NOTE: The piston pin retaining clip gap orientation must be toward the top or dome of piston.

Install the piston pin retainers.

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5.

Lubricate with clean engine oil and install the piston rings.
Material

: Motorcraft ® SAE 5W-20 Premium Synthetic Blend Motor Oil / XO-5W20-QSP (WSS-M2C945-A)

Courtesy of FORD MOTOR COMPANY

6.

NOTE: The piston compression upper and lower ring should be installed with the "O" mark on the ring face pointing up toward the top of the piston.

NOTE: The arrow on the top of the piston indicates the front of the engine.
1. 1.
  
  Center line of the piston parallel to the wrist pin bore.
1. 2.
  
  Upper compression ring gap location.
1. 3.
  
  Upper oil control segment ring gap location.
1. 4.
  
  Lower oil control segment ring gap location.
1. 5.
  
  Expander ring and lower compression ring gap location.

Courtesy of FORD MOTOR COMPANY