Nissan A2010-BV80A Piston With Pin

Standard size imperial diameter big-end bearings can be purchased off the shelf, and a choice of undersizes if required, for re-ground crank shafts is available; contact any Nissan dealer or an automotive engineering workshop. Start off with removing the old lubricant and washing the backs of the bearing shells as well as the regions where they are found in the connecting rod and bearing cap. Insert the bearing shells into the specified positions in the connecting rods and caps, to make the shells look equally centralized without any contact with the bearing surface. Remove all shells and connecting rods from the water; besides, wipe off all the pistons and connecting rods using lint-free cloth, lubricate cylinder bores, pistons and piston rings before aligning the piston/connecting rod pair in their respective locations. So, with the assembly No 1, place the piston rings in the cylinder in such manner that they are spaced and clamped with the help of a piston ring compressor. Fit the piston/connecting rod assembly into the top of cylinder No 1 with the piston marking facing the correct side of the bore and tap the assembly home until the piston crown is flush with the cylinder top. Ensure that the bearing shell is fitted correctly, lubricate the crankpin and the two bearing shells and gently Diego with impact the piston/connecting rod assembly into place on the crank pin. Replace the big-end bearing cap and fasten the retaining bolts with equal force and turn them only with fingers making sure that the faces having marks in identification are still in contact. It is then necessary to tighten the bearing cap retaining bolts to the already mentioned torque as well as turning the bolts by the mentioned angle in the specifications. Try to rotate the crankshaft and observe that there is very little or no bind or tight areas, this is normal on some new parts. Refit the remaining piston/connecting rod assemblies in the same way as previously described by this instruction. To 1.2 Litre petrol engines, replace the main bearing cap support beam and gradually tighten the holding bolts to the prescribed force. To all petrol engine, smear the same to the mating face and reposition the upper alloy part of the sump to the bottom of the cylinder block tightening all bolts that holds the sump in place in the makers recommended torque setting. Once the upper alloy part of the sump is properly positioned, install a new crankshaft left-hand oil seal, and then proceed to place the flywheel, cylinder head, oil pump, timing chain/belt and sump back into their rightful positions.

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.