GM Service Manual Online
For 1990-2009 cars only
Makes 🢒 Saturn 🢒 2001 🢒 L300/LW300 🢒 Engine 🢒 Engine Mechanical - 3.0L (L81) 🢒 Engine Block Cleaning and Inspection

Tools Required

J 8087 Cylinder Bore Gauge

  1. Clean the following components:
    2. • Use solvent to clean the engine block.
    • Clean the gasket surfaces.
    • Clean the coolant passages.
    • Clean the oil passages.
  2. Inspect the following for cracks:
    3. • Inspect the cylinder walls for cracks.
    • Replace the engine block if any cracks are evident.
    • Inspect the coolant jackets for cracks.
    • Replace the engine block if any cracks are evident.
    • Inspect the main bearing insert cavities for cracks.
    • Replace the engine block if any cracks are evident.
  3. Inspect for the following in the cylinder walls:
    4. • Inspect for gouges in the cylinder walls deeper than 0.05 mm (0.002 in).
    • Bore the cylinder if gouges are deeper than 0.05 mm (0.002 in).
    • Inspect for pitting in the cylinder walls deeper than 0.05 mm (0.002 in).
    • Bore the cylinder if pitting is deeper than 0.05 mm (0.002 in).
    • Inspect for scores is the cylinder walls deeper than 0.05 mm (0.002 in).
    • Bore the cylinder if scores are deeper than 0.05 mm (0.002 in).

    Object Number: 217419 Size: SH
  4. Use the J 8087 to measure the cylinder bore at the directed points (1, 2) for the following conditions:
    5. • Measure for wear.
    • Measure for taper.
    • Measure for runout.
    • Measure for ridging.
  5. The cylinders with less than 0.05 mm (0.002 in) of wear and/or taper may be reconditioned.
  6. Recondition the cylinders with less 0.05 mm (0.002 in) with a hone and fitted with the appropriate size select fit piston (providing the cylinder was not fitted with the largest size select fit piston).

    Object Number: 894209 Size: SH
  1. Clean the following components:
    2. • Use solvent to clean the engine block.
    • Clean the gasket surfaces.
    • Clean the coolant passages.
    • Clean the oil passages.
  2. Inspect the following for cracks:
    3. • Inspect the cylinder walls for cracks.
    • Replace the engine block if any cracks are evident.
    • Inspect the coolant jackets for cracks.
    • Replace the engine block if any cracks are evident.
    • Inspect the main bearing insert cavities for cracks.
    • Replace the engine block if any cracks are evident.
  3. Inspect for the following in the cylinder walls:
    4. • Inspect for gouges in the cylinder walls if deeper than 0.05 mm (0.002 in).
    • Bore the cylinder if the gouges are deeper than 0.05 mm (0.002 in).
    • Inspect for pitting in the cylinder wall if deeper than 0.05 mm (0.002 in).
    • Bore the cylinder if pitting is deeper than 0.05 mm (0.002 in).
    • Inspect for scores if the cylinder wall is deeper than 0.05 mm (0.002 in).
    • Bore the cylinder if scores are deeper than 0.05 mm (0.002 in).

    Object Number: 894213 Size: SH
  4. Use a cylinder bore gage to measure the cylinder bore for the following conditions:
    5. • Measure for wear.
    • Measure for taper.
    • Measure for runout.
    • Measure for ridging.
  5. If wear and/or taper is less than 0.05 mm (0.002 in), the cylinder must be reconditioned. Recondition the cylinders with less than 0.05 mm (0.002 in) of wear and/or taper with a hone and fit with the appropriate size select fit piston, providing the cylinder was not fitted with the largest size select fit piston. If wear and/or taper is over 0.05 mm (0.002 in) the cylinder must be bored.