Prior to removing the piston and connecting rod assemblies, the cylinder head(s), oil pan, and oil pump must be taken off. Use your fingernail to check for any ridge at the upper limit of ring travel, approximately 1/4-inch down from the top of each cylinder. If ridges are present due to carbon deposits or cylinder wear, they must be completely removed with a ridge reamer before the pistons are taken out to avoid breakage. Ensure the tool does not cut into the ring travel area more than 1/32-inch. Once the ridges are removed, turn the engine upside-down with the crankshaft facing up. Before removing the connecting rods, check the end play using a dial indicator or feeler gauges, sliding them between the first connecting rod and the crankshaft throw until the play is eliminated. If the end play exceeds the service limit, new connecting rods may be necessary. If new rods or a new crankshaft are installed, the end play might fall below the specified minimum, requiring machining of the rods. Check the connecting rods and caps for identification marks; if not marked, use a center-punch or scribe to create indentations on each rod and cap. Loosen the connecting rod cap nuts half a turn at a time until they can be removed by hand, then take off the connecting rod cap and bearing insert without dropping the insert. To protect the crankshaft journal and cylinder wall during piston removal, slip a short length of plastic or rubber hose over each connecting rod cap bolt. Remove the bearing insert and push the connecting rod/piston assembly out through the top of the engine using a wooden or plastic hammer handle, ensuring all ridge material has been cleared. Repeat this process for the remaining cylinders. After removal, reassemble the connecting rod caps and bearing inserts in their respective rods and install the cap nuts finger tight to prevent accidental damage to the bearing surfaces. Avoid separating the pistons from the connecting rods.
