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Home >> Buick >> 2007 >> Lucerne CX >> Repair and Diagnosis >> External Pages >> Different car >> Section 203 (Engine Mechanical - 3.5L) >> Repair Instructions >> Off-Vehicle Repair Instructions >> Piston, Connecting Rod and Bearing Removal >> Removal Procedure

Removal Procedure

WARNING: This page is about a different car, the 2006 Pontiac Montana SV6, 2006 Chevrolet Uplander, and 2006 Buick Terraza. However, it is still accessible from the selected car via links, so may be relevant.
    Fig 1: Removing Cylinder Bore Ring Ridge
    GM11497Courtesy of GENERAL MOTORS CORP.
  1. Mark the piston with the number of the cylinder from which the piston is being removed.
  2. Mark the connecting rod and the connecting rod cap in order to ensure correct assembly.
    3. NOTE: If there is a pronounced ridge at the top of the piston travel, the ridge must be removed with a ridge reamer before the piston and connecting rod assembly are removed. Applying force may break the piston rings or damage the piston.
  3. Use the J 24270  in order to remove the cylinder bore ring ridge. See Special Tools . Complete the following steps:
    1. Turn the crankshaft until the piston is at the bottom of the stroke.
    2. Cover the piston with a cloth.
    3. Remove the cylinder ring ridge.
    4. Turn the crankshaft until the piston is at the top of the stroke.
    5. Remove the cloth.
    6. Remove the metal shavings from the cylinder and piston.
    4. Fig 2: View Of Connecting Rod & Piston Assembly
    GM909623Courtesy of GENERAL MOTORS CORP.
  4. Remove the connecting rod bolts.
  5. Remove the connecting rod cap.
  6. Remove the connecting rod bearing half.
  7. Install J 41556  into the connecting rod. See Special Tools .
  8. Remove the connecting rod and piston assembly from the engine with a suitable tool.
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