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Cylinder Block: Assembly

WARNING: This page is about a different variant/trim than selected.
Fig 1: Identifying Connecting Rod, Connecting Rod Bearing, Piston, Piston Pin, Snap Ring, Circlip, Oil Ring And Top Ring With Lubrication Points
G07912820Courtesy of SUBARU OF AMERICA, INC.
  1. Apply engine oil to the surface of the connecting rod bearing. Attach the connecting rod bearing to the connecting rod.
  2. Install the circlip on one end of the piston using a flat tip screwdriver. (Circlip type)
    NOTE:
    • Be careful not to damage the piston, by wrapping the tip of flat tip screwdriver with tape.
    • Make sure the circlip is firmly inserted into the circlip groove.
    • After installing the circlip, rotate the circlip so that its end part (a) and the cutout portion of circlip groove (b) do not match.
      Fig 2: Identifying Circlip Correct And Incorrect Position
      G07912821Courtesy of SUBARU OF AMERICA, INC.
  3. Install the snap ring on one end of the piston using a snap ring pliers. (Snap ring type)
    NOTE: Make sure the snap ring is firmly inserted into the snap ring groove.
  4. Set the piston to the connecting rod.
    NOTE: Align the front mark of piston and the connecting rod direction correctly as shown in the figure.
    Fig 3: Identifying Piston And Connecting Rod Alignment Position
    G07912822Courtesy of SUBARU OF AMERICA, INC.
  5. Apply engine oil to the piston pin, and attach the piston pin.
  6. Install the circlip on the piston using a flat tip screwdriver. (Circlip type)
    NOTE:
    • Be careful not to damage the piston and piston pin, by wrapping the tip of flat tip screwdriver with tape.
    • Make sure the circlip is firmly inserted into the circlip groove.
    • After installing the circlip, rotate the circlip so that its end part (a) and the cutout portion of circlip groove (b) do not match.
      Fig 4: Identifying Circlip Correct And Incorrect Position
      G07912823Courtesy of SUBARU OF AMERICA, INC.
  7. Install the snap ring on the piston using a snap ring pliers. (Snap ring type)
    NOTE: Make sure the snap ring is firmly inserted into the snap ring groove.
  8. Install the oil ring upper rail, expander and lower rail by hand.
  9. Install the second ring and top ring using piston ring expander.
  10. Install the plug and orifice to the cylinder block as necessary. Refer to , CYLINDER BLOCK , COMPONENT, General Description.
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