Piston, Connecting Rod, and Bearing Removal

Tools Required

• J 5239  Connecting Rod Bolt Guide Set. See Special Tools .
• J 24270  Cylinder Bore Ridge Reamer. See Special Tools .

Fig 1: Removing Cylinder Bore Ring Ridge
Courtesy of GENERAL MOTORS CORP.
1. Use the J 24270  in order to remove the cylinder ring ridge. See Special Tools .
   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. See Special Tools .
   4. Turn the crankshaft so the piston is at the top of the stroke.
   5. Remove the cloth.
   6. Remove the cutting debris.
Fig 2: Connecting Rod Nut & Cap
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 3: Protecting Crankshaft Journals Using J 5239
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. See Special Tools .
Fig 4: Connecting Rods
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.