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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 1443 (Engine Mechanical - 4.2L (Ll8)) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Piston And Connecting Rod Assemble >> Assembly

Piston And Connecting Rod Assemble: Assembly

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    Fig 1: View Of Piston Pin Retaining Clips
    GM637736Courtesy of GENERAL MOTORS CORP.
  1. Lubricate the piston pin with clean engine oil.
  2. Install one of the piston pin retainers into the retainer groove.
    3. Fig 2: View Of Piston Pin & Connecting Rod
    GM637738Courtesy of GENERAL MOTORS CORP.
  3. Install the connecting rod and piston pin. Push the piston pin in until it bottoms against the installed piston pin retainer.
    4. Fig 3: View Of Piston Pin Retaining Clips
    GM637736Courtesy of GENERAL MOTORS CORP.
  4. Install the second piston pin retainer.
    5. Fig 4: Installing Piston Rings
    GM654717Courtesy of GENERAL MOTORS CORP.
    IMPORTANT: The piston ring end gaps must be staggered 90 degrees apart.
    NOTE: Use a piston ring expander to install the piston rings. The rings may be damaged if expanded more than necessary.
  5. Install the following components of the bottom ring assembly (oil control ring).
    1. The expander
    2. The lower oil control ring
    3. The upper oil control ring
    6. Fig 5: Identifying Piston Ring Location
    GM1520590Courtesy of GENERAL MOTORS CORP.
  6. Install the middle ring (compression ring) with the napier groove facing down.
  7. Install the top ring.
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