Piston, Connecting Rod, and Bearing Removal

Tools Required 

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

1. Use the J 24270  in order to remove the cylinder ring ridge.
   1. 1.1. Turn the crankshaft until the piston is at the bottom of the stroke.
   2. 1.2. Place a cloth on top of the piston.
   3. 1.3. Use the J 24270  to remove all of the cylinder ring ridge.
   4. 1.4. Turn the crankshaft so the piston is at the top of the stroke.
   5. 1.5. Remove the cloth.
   6. 1.6. 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.

2. Remove the connecting rod nuts.
3. Remove the connecting rod cap.
   Fig 2: Connecting Rod Cap & Nuts

   Courtesy of GENERAL MOTORS CORP.
4. 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.

5. 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: Connecting Rod Bearings

   Courtesy of GENERAL MOTORS CORP.