9. CYLINDER/PISTON UXV 500 Measure the connecting rod small end I.D.. Service Limit: 22.06 mm (0.8824 in) Calculate the connecting rod-to-piston pin clearance. Service Limit: 0.06 mm (0.002 in) INSTALLATION Piston ring Carefully install the piston rings into the piston ring grooves with the markings facing up. Be careful not to damage the piston and rings. Do not confuse the top and second rings. To install the oil ring, install the oil ring, then install the side rails. Stagger the piston ring end gaps 120° degrees apart from each other. Stagger the side rail end gaps as shown. 9-7