Special Tools for Con Rods

The two connecting rod eyelet axes (the small ones at the top for the piston pin and the large ones at the bottom on the crankpin) must be aligned exactly parallel so that the crankshaft runs smoothly. Special connecting rod clamps are available so that connecting rods can also be aligned when installed. Once the shaft has been dismantled and the connecting rod removed, the bearing shells and connecting rod bushes can be pressed out and in and reamed to size. There are reamers and lapping tools for this job.