Ford 1L2Z-6108-AA Piston And Pin Assembly

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Before initiating the inspection process, clean the piston/connecting rod assemblies and remove the original piston rings, replacing them with new ones during reassembly. Use a piston ring installation tool to carefully extract the rings, avoiding any damage to the pistons. Scrape carbon deposits from the piston tops using a hand-held wire brush or fine emery cloth, avoiding the use of a drill-mounted wire brush to prevent erosion of the soft piston material. Employ a piston ring groove cleaning tool or a section of a broken ring to clear carbon deposits from the ring grooves without damaging the metal. Clean the piston/rod assemblies with solvent, ensuring clear oil return holes. If the pistons and cylinder walls are not excessively worn, new pistons may not be necessary, but new piston rings are recommended for engine rebuilding. Inspect each piston for cracks, scoring, and scuffing, addressing issues like overheating or abnormal combustion. Check for piston corrosion indicating coolant leakage and correct the causes. Measure piston ring side clearance and piston-to-bore clearance, replacing pistons if needed. Evaluate piston-to-rod clearance and, if excessive wear is noted, seek resizing at an automotive machine shop. If piston removal from connecting rods is required, consult an automotive machine shop. Inspect connecting rods for cracks or damage, replacing them if addressing a connecting rod knock during engine rebuilding.

Ensure the cylinder walls are meticulously clean - Chamfer the top edge of each cylinder - Make sure the crankshaft is in place.

The tool should not cut into the ring travel area more than 1/32-inch.