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Piston and Connecting Rod Assemble

WARNING: This page is about a different variant/trim than selected.
    Fig 1: Piston And Connecting Rod Marks
    GM236258Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Install the piston onto the connecting rod with the marks (1) oriented toward the front of the engine.
  1. Coat the piston pin with engine oil.
    2. Fig 2: View Of Piston, Pin & Connecting Rod
    GM261987Courtesy of GENERAL MOTORS CORP.
  2. Push the piston pin into the piston pin bore by hand.
  3. Assemble the connecting rod and the piston.
    4. Fig 3: Removing/Installing Piston Snap Rings
    GM236253Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: Be sure that the end gap of the piston pin snap ring is aligned with the pin hole cutout portion of the piston.
  4. Install new snap rings using a small screwdriver.
    5. NOTE: Use a piston ring expander to install the piston rings. The rings may be damaged if expanded more than necessary.
    Fig 4: Removing/Installing Piston Rings From Piston
    GM236178Courtesy of GENERAL MOTORS CORP.
  5. Install the following components of the oil control ring assembly (bottom ring):
    1. The expander
    2. The lower oil control ring
    3. The upper control ring
  6. Install the lower compression ring (second ring). Place the manufacturer's mark facing up.
  7. Install the upper compression ring (top ring). Place the manufacturer's mark facing up.
    8. Fig 5: Positioning Piston Rings
    GM1641084Courtesy of GENERAL MOTORS CORP.
  8. Position the piston rings in relation to the front mark (1), as follows:
    1. Upper side rail (2).
    2. Compression No. 2 (3).
    3. Lower side rail (4).
    4. Compression No. 1 or expander (5).
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