Piston and Connecting Rod Disassemble

Special Tools

• EN-46745  Piston Pin Clip Remover/Installer
• EN-46745-4  Piston Pin Clip Remover/Installer Adapter

For equivalent regional tools, refer to Special Tools .

Fig 1: Piston Rings
Courtesy of GENERAL MOTORS COMPANY
WARNING:

Handle the piston carefully. Worn piston rings are sharp and may cause bodily injury.

1. Disassemble the piston rings (1, 2, 3, 4, 5). Use a suitable tool to expand the rings. The piston rings must not be reused.
Fig 2: View of Piston Pin Retainers
Courtesy of GENERAL MOTORS COMPANY
NOTE:

Two retainers hold each piston pin in place. Ensure that the piston pin is not damaged. Do not reuse the retainers.

NOTE:
Use the appropriate adapter for EN-46745  remover to remove the retainers. The appropriate adapter will fit the piston pin ID and allow the ring to be removed or installed.
• For LTG piston pin, use EN-46745-4  adapter.
2. Remove the piston pin retainers using the EN-46745  remover (1) and the appropriate adapter. Discard the retainer.
Fig 3: Piston Pin And Connecting Rod
Courtesy of GENERAL MOTORS COMPANY
3. Remove the piston pin (1) and the connecting rod (3) from the piston (2).