Piston, Connecting Rod, and Bearing Removal

WARNING: This page is about a different car, the 2003 GMC Savana and 2003 Chevrolet Chevy Express. However, it is still accessible from the selected car via links, so may be relevant.

Tools Required

J 5239 Connecting Rod Bolt Guide Set
J 24270 Cylinder Bore Ridge Reamer

Use the J 24270 in order to remove the cylinder ring ridge.
1. Turn the crankshaft until the piston is at the bottom of the stroke.
2. Place a cloth on top of the piston.
3. Use the J 24270 to remove all of the cylinder ring ridge.
4. Turn the crankshaft so the piston is at the top of the stroke.
5. Remove the cloth.
6. Remove the cutting debris.
  
  Fig 1: Removing Cylinder Ring Ridge Using J 24270
  Courtesy of GENERAL MOTORS CORP.
  
  Important: Place matchmarks or numbers on the connecting rods and the connecting rod caps.
Remove the connecting rod nuts.
Remove the connecting rod cap.

Fig 2: Removing Connecting Rod Nuts & Cap
Courtesy of GENERAL MOTORS CORP.
Use the J 5239 in order to protect the crankshaft journals and remove the connecting rod and the piston out of the top of the engine block.

Fig 3: Removing Connecting Rod & Piston Using J 5239
Courtesy of GENERAL MOTORS CORP.

Important: Always assemble the connecting rod caps to the matching connecting rods.
Remove the connecting rod bearings.
- Keep the connecting rod bearings with the original connecting rod and connecting rod cap.
- Wipe the oil from the connecting rod bearings.
- Wipe the oil from the crankpins.
  
  Fig 4: Removing Connecting Rod Bearings
  Courtesy of GENERAL MOTORS CORP.