Grand Prix V6-191 3.1L VIN M SFI (1998)
2. Install the J 5239.
3. Compress the piston rings using the J 8037.
4. When installing the piston and connecting rod assembly, the stamped arrow on the piston must point to the front of the engine while the flange on
the connecting rod must face toward the front of the piston on the left hand, and face toward the rear of the piston on the right hand.
5. Install the piston into its original bore using the J 5239 and the J 8037 and lightly tapping the top of the piston with a wooden hammer handle.
6. Firmly hold the J 8037 against the engine block until all of the piston rings have entered the cylinder bore.
7. Raise and suitably support the vehicle. Refer to Vehicle Lifting.
8. Install the upper connecting rod bearing into the connecting rod.
9. Coat the inside surfaces of the upper connecting rod bearing with new engine oil.
10. Using the J 5239 pull the piston and rod assembly down to the crankshaft.
11. Remove the J 5239.