Toyota 13101-16070 Piston Sub-Assy, W/Pin

Before removing the piston and connecting rod assemblies, the cylinder head, oil pan, oil strainer, oil pump, and rear oil seal retainer must be taken off the block. Begin by completely removing the ridge at the top of each cylinder using a ridge reaming tool, following the manufacturer's instructions, as neglecting this step may lead to piston breakage. Once the ridges are cleared, turn the engine upside-down with the crankshaft facing up. Measure the end play of each connecting rod using a dial gauge or feeler gauge, ensuring the measurements do not exceed the service limit; if they do, new connecting rods may be necessary, and machining might be required to restore proper end play. Check for identification marks on the connecting rods and caps, making your own if necessary. Loosen the connecting rod cap nuts gradually until they can be removed by hand, using a plastic-faced hammer if needed. Remove the first connecting rod cap and bearing insert carefully, protecting the crankshaft journal and cylinder wall with a short length of plastic or rubber hose over the rod bolts. Push the connecting rod and piston assembly out through the top of the engine, ensuring all ridge material has been removed. Repeat this process for each cylinder, reinstalling the bearing inserts and attaching the rod cap and connecting rod after each piston removal, keeping the old bearing inserts in place until reassembly to prevent damage.