Honda 13010-P28-A00 Piston Set (Std)

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Prior to removing the piston and connecting rod assemblies, the cylinder head, 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 attempting to remove the pistons to avoid breakage. Once the ridges are cleared, turn the engine upside-down with the crankshaft facing up. Before removing the connecting rods, check the side clearance with feeler gauges, ensuring the endplay does not exceed the service limit; if it does, new connecting rods may be necessary. Mark the connecting rods and caps with a center-punch if they lack identification marks. Loosen the connecting rod cap nuts gradually until they can be removed by hand, then take off the number one connecting rod cap and bearing insert without dropping the insert. To protect the crankshaft journal and cylinder wall during piston removal, place short lengths 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 if needed. 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 damage to the bearing surfaces. Avoid separating the pistons from the connecting rods.

Reinstall the connecting rod and cap, tightening the nuts to torque.

Piston-to-rod clearance should be assessed by twisting the piston and rod in opposite directions; noticeable play indicates excessive wear that requires correction.