34. Piston and Connecting Rod Disassemble

Piston and Connecting Rod Disassemble

Important: Certain 6.0L LQ9 engines will use a full-floating piston and pin design. In those applications, the pin is retained in the piston by retaining clips.


Press Fit Piston Pin

Tools Required
- J24086-C Piston Pin Remover/Installer Set







1. Using piston ring pliers, remove the piston rings from the piston.







2. Install fork insert J24086-920A into fixture J24086-10.







3. Install the piston and connecting rod assembly onto J24086-10.
4. Install J24086-107 into the piston pin and J24086-88A through the fixture and into J24086-107.

Notice: After the installer hub bottoms on the support assembly, do not exceed 35,000 kPa (5,000 psi) pressure, this could cause damage to the tool.







5. Press the piston pin from the piston and connecting rod assembly.




Full Floating Piston Pin







1. Using piston ring pliers, remove the piston rings from the piston.







2. Remove the piston pin retaining clips.
3. Remove the pin from the piston and connecting rod.
4. The piston and pin are a matched set and are not to be serviced separately. Mark, sort, or organize the piston and the matching piston pin.