Honda 13210-PM6-000 Rod, Connecting

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When draining coolant, be aware that ethylene glycol antifreeze can attract pets, posing a fatal risk if ingested, so always use a sealable container and reuse coolant unless contaminated or several years old. Minimize exposure to used engine oil, which can cause skin disorders, including cancer, by wearing protective gloves and washing hands promptly after contact. To begin removal with the engine out, disconnect the negative battery cable and remove the hood, then drain the radiator and engine oil. Raise the vehicle and support it with safety stands, attaching a chain to the clutch cable bracket to relieve the center mount load without removing the left engine mount. Proceed to remove the center beam, engine lower mount, and cylinder head, then loosen and remove the oil pan and flywheel dust shield, tapping the corners lightly if necessary. Remove the oil passage block and oil pump assembly, then from underneath, take off the connecting rod bearing caps and push the pistons and connecting rods out, checking for carbon buildup or ridges before removal. When handling piston rings, avoid excessive force, and use a hydraulic press for piston pin removal. For installation, stagger the gaps of the three-piece oil ring and ensure markings on the second and top rings face upward, checking for smooth movement. Use a ring compressor to install the piston, applying oil to the rings and cylinder wall, and guide the connecting rod carefully during installation. Reassemble components in reverse order, ensuring proper alignment of bearing caps. For cleaning and inspection, remove rings with a piston ring expander, clean grooves carefully, and inspect for wear or damage, replacing pistons as necessary. Check the cylinder bore for wear using a telescope gauge and micrometer, measuring at specified points to determine clearance and whether oversized pistons are needed. When fitting new piston rings, compress them and measure the end gap, filing as necessary to avoid breakage, and inspect grooves for wear. Install rings in the correct order, ensuring proper positioning and spacing, and use a ring compressor for final assembly into the engine.

When the piston and connecting rod assemblies are to be fitted, but before they are fitted, the cylinder walls should be free from any lubricant, the top edge of each cylinder should be chamfered, and the crankshaft should be assembled. Carefully unscrew the cap of the number one connecting rod and, applying the marks made during dismantle, be sure to clean the bearing surfaces with the piece of cotton wool. According to received information it was recommended not to pick the new bearing inserts with fingers to avoid carrying contamination on gloves. Remove the old 'O' ring and clean the new one as well as the back side of the new upper bearing insert and position it into the connecting rod correctly in such a way that the tab fits into the recess without hammering or nicking the bearing face. If the crankshaft has been machined, or has any BEAM machining, fit standard bearings, otherwise use oversize bearings to match the connecting rod bearings according to their stamped numbers. Purge the area of other bearing insert's back side as well and then put it in the rod cap so that the tab should fit correctly; there is no need to lubricate it. Space the piston ring gaps around the piston with no two gaps being opposite each other on the piston's thrust surfaces areas. Place a section of hose over each connecting rod cap bolt, apply clean engine oil to rings in cylinder bore and push piston and rings into the bore with piston ring compressor intact with about a 1/2 inch sticking out of the skirt. Turn engine for the number one connecting rod journal and place it at the bottom dead center and lubricate the cylinder walls. Place the piston/connecting rod fully into the cylinder bore with the mark on the piston pointing towards the front of the vehicle and using the hammer lightly tap on the ring compressor to make sure that it locates itself on the block. Gently hit the piston with a wooden or plastic hammer handle so as to slide the connecting rod over the crankshaft journal without applying force that will harm the piston or the rings. During the final tightening process and after installation, check the P.C. for the oil clearance of the connecting rod bearing using Plastigage, make sure the marks on the cap and the rod match. Nuts must be tightened to the required torque in a step by step manner after which the cap is removed to read the Plastigage to ascertain the clearance. In the case that the above clearance is incorrect, then what may be required is a check on dirt or oil contamination or a check on the journal diameter. Remove any Plastigage gently, use a clean cloth to wipe off the grease, spread a thin layer of moly-base grease or engine assembly lube on the bearing surfaces and replace the connecting rod and cap and tighten the nuts to the prescribed torque. That is done for the rest of the assemblies and it is critical to maintain cleanness as well as the correct direction of the piston. After that turn a crankshaft in order to check for binding and the last preparatory step is to measure the counterweight endplay with pin of connecting rod which must not be over the specified limit. When necessary, resize at an automotive machine shop.

Each piston should be inspected for cracks, scoring, scuffing, holes, and burned areas, as these can indicate overheating or abnormal combustion.

The cylinder head, oil pan, and oil pump must be taken off.