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Home >> Chevrolet >> 2002 >> Blazer 4D Utility, 4WD, Part Time >> Repair and Diagnosis >> External Pages >> Different car >> Section 722 (Engine Mechanical - 8.1L (Unit Repair)) >> Repair Instructions >> Piston and Connecting Rod Assemble

Piston and Connecting Rod Assemble

WARNING: This page is about a different car, the 2002 GMC Yukon XL, 2002 Chevrolet Suburban, and 2002 Chevrolet Avalanche. However, it is still accessible from the selected car via links, so may be relevant.
NOTE: Use a piston ring expander to install the piston rings. The rings may be damaged if expanded more than necessary.
  1. Install the lower oil control piston ring spacer onto the piston.
    Fig 1: Lower Oil Control Piston Ring Spacer
    G01675451Courtesy of GENERAL MOTORS CORP.
  2. Install the lower oil control piston ring onto the piston (1).
    Fig 2: Installing Lower Oil Control Piston Ring
    G01675452Courtesy of GENERAL MOTORS CORP.
  3. Install the upper oil control piston ring onto the piston (1).
    Fig 3: Installing Upper Oil Control Piston Ring
    G01675453Courtesy of GENERAL MOTORS CORP.
  4. Space the oil control piston ring end gaps a minimum of 90 degrees apart (1, 2, 3).
    Fig 4: Spacing Oil Control Piston Ring End Gaps
    G01675454Courtesy of GENERAL MOTORS CORP.
  5. Install the lower compression piston ring onto the piston (1). The mark on the side of the piston ring should face the top of the piston.
    Fig 5: Lower Compression Piston Ring Mark
    G01675455Courtesy of GENERAL MOTORS CORP.
  6. Install the upper compression piston ring onto the piston. The mark (1) on the side of the piston ring should face the top of the piston.
  7. Space the compression piston ring end gaps 120 degrees apart.
    Fig 6: Upper Compression Piston Ring Mark
    G01675456Courtesy of GENERAL MOTORS CORP.