Nissan A2010-BV80A Piston-W/Pin

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Remove the sump, timing chain/belt, oil pump, and cylinder head. For petrol engines, take off the flywheel, then undo the retaining bolts and detach the upper alloy part of the sump from the bottom of the cylinder block. On 1.2 litre petrol engines, undo the retaining bolts and remove the main bearing cap support beam. If there is a pronounced wear ridge at the top of any bore, it may be necessary to remove it with a scraper or ridge reamer to avoid piston damage during removal, as such a ridge indicates excessive wear of the cylinder bore. Each connecting rod and bearing cap should be stamped with its respective cylinder number, with No 1 cylinder located at the timing chain end of the engine, and big-end caps marked with a centre punch. If no markings are visible, use quick-drying paint or similar to mark each connecting rod and big-end bearing cap with its respective cylinder number on the flat machined surface provided. Turn the crankshaft to bring pistons 1 and 4 to bottom dead centre. Unscrew the belts from No 1 piston big-end bearing cap, remove the cap, and recover the bottom half bearing shell. If the bearing shells are to be reused, tape the cap and the shell together. Using a hammer handle, push the piston up through the bore and remove it from the top of the cylinder block, recovering the bearing shell and taping it along with the connecting rod for safekeeping. Loosely refit the big-end cap to the connecting rod and secure with the bolts to help keep the components in their correct order. Remove No 4 piston assembly in the same manner. Turn the crankshaft through 180° to bring pistons 2 and 3 to bottom dead centre, and remove them in the same way.

Clean the piston/connecting rod assemblies and remove the original piston rings from the pistons, always using new rings during reassembly.

With the upper alloy part of the sump in place, fit a new crankshaft left-hand oil seal, then refit the flywheel, followed by the cylinder head, oil pump, timing chain/belt, and sump.