Special Instructions, SMHS7295. 5. Heat connecting rod (4) in an oven to a temperature of 177° to 260°C (350° to 500° F). Never use a direct flame to heat a connecting rod. 6. Put connecting rod (4) in position on the base plate of Tool (C). Put a new rod pin bearing (6) on the adapter part of Tool (C). NOTE: The old bearing is pushed out by Tool (C) as the new bearing is installed. 7. Use Tool (C) to push the new bearing into the connecting rod until the push adapter of Tool (C) makes full contact with the connecting rod surface. 8. Use a pin boring machine to make the rod pin bearing the correct size. The bore in the new rod pin bearing must be 50.830 ± 0.008 mm (2.0012 ± .0003 in). 9. Check the clearance between the ends of the piston rings. See the topic, "Pistons & Rings" in Specifications Manual, SENR6470. 10. Install the oil ring spring in the oil ring groove of the piston. NOTE: The oil ring is to be installed over the spring with the oil ring end gap 180° from the oil ring spring joint. 11. Install the oil ring on the piston with tool (B). 12. Install the second (intermediate) piston ring with the side that has the identification "UP-2" toward the top of the piston. Use Tool (B) to install the ring. 13. Install the first (top) piston ring with the side that has the identification "UP-1" toward the top of the piston. Use Tool (B) to install the ring. NOTE: After the installation of all three piston rings, put the piston rings in position so the end gaps are 120 degrees apart. 14. Put the piston in position on connecting rod (4). Put clean engine oil on pin (2), and install the pin. Install retainer rings (1) with Tool (A). Make sure the retainer rings are in the grooves of the piston. 15. Install bearings (3) in the connecting rod and connecting rod cap.