LEMON Manuals: Even more car manuals for everyone
Home >> Buick >> 2004 >> Century Limited >> Repair and Diagnosis >> External Pages >> Different car >> Section 134 (Engine Mechanical - 3.8L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Piston, Connecting Rod, and Bearing Installation

Piston, Connecting Rod, and Bearing Installation

WARNING: This page is about a different car, the 2004 Pontiac Grand Prix. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

  1. Position the crankshaft so the connecting rod journal is opposite the piston and connecting rod assembly being installed. This will aid in the installation of the connecting rod assembly.
  2. Lubricate the cylinder wall with engine oil.
  3. Install the connecting rod bearing inserts.
  4. Lubricate the connecting rod bearing insert surface with engine oil.
  5. Install J 41507  to the connecting rod. Hand tighten the tool to the connecting rod.
  6. Fig 1: Installing J 41507 To Connecting Rod
    GM38180Courtesy of GENERAL MOTORS CORP.
  7. Install J 8037  to the piston.
  8. NOTE: Guide the lower connecting rod end carefully to avoid damaging the crankshaft journal.
  9. Use J 8037  to compress the piston rings for installation of the piston and connecting rod assembly.
  10. Fig 2: Installing Piston & Connecting Rod Assembly Into Engine
    GM5159Courtesy of GENERAL MOTORS CORP.
  11. Install the piston and connecting rod assembly into the engine.
    IMPORTANT: Ensure the arrow on top of the piston or the markings made during removal face towards the front of the engine or are in the same location as when removed.
  12. Use J 41507  to pull the connecting rod into place.
  13. Remove J 41507  .
  14. Install the connecting rod bearing cap.
  15. Fig 3: Connecting Rod Cap
    GM38153Courtesy of GENERAL MOTORS CORP.
    NOTE: Refer to Special Fastener Notice in Cautions and Notices.
    NOTE: Refer to Fastener Notice in Cautions and Notices.
  16. Install the connecting rod bearing cap bolts.

    Tighten:  Tighten the connecting rod bearing cap bolts to 27 N.m (20 lb ft) + 50 degrees using J 45059  .

  17. Pry the connecting rod back and forth and check for binding. If necessary loosen and retighten the connecting rod bearing cap.
  18. Measure the connecting rod side clearance.
  19. Fig 4: Measuring Connecting Side Clearance
    GM5163Courtesy of GENERAL MOTORS CORP.