Nissan 12033-8J100 Ring Set-Piston

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Before fitting the new piston rings be sure to measure the ring end gaps-the piston ring side clearance should have been checked. Stagger the piston/connecting rod assemblies and the new ring sets to be comparable to the piston and cylinder during the end gap measurement and engine buildup process. Place the top ring into the first cylinder aligning its extremities with the cylinder walls by the help of the piston, putting it as close as possible to the bottom of the cylinder. To obtain the end gap dimension, place feeler gauges between the two adjacent ring ends until the desired value is reached; it should barely move with the gauge inserted. The next three stages are, if gap is incorrect, check that rings are correct; if rings are incorrect, perform incorrect ring check; and if incorrect gap is greater than rings, perform two rings clockwise turn. If this space is narrow then the rings are filed and in regard to type of the ring set and material procedures of exchanging the rings may be required. Further end gap is not much of an issue as long as it is not more than 0.040-inch; align measurements with maximum standards. When filing is required, apply the vise, and oil the jaws; file slowly and remember to check the available space after every filing. The same is done for every ring in all the cylinders and with due care that the rings, pistons, and cylinders must be matched. When the end gaps of the piston are adjusted, fit the rings upon the pistons beginning the oil control ring, this is comprised three parts. Place the spacer/expander into the grove in the right side of the cylinder head and make sure that if the anti-rotation tang is in the right place; the next step is to fit the lower and upper side rails, do not use the piston ring installation tool for this operation since it may damage the rails. Before installing the oil ring components, ensure that sides rails fit in the grove and will turn smoothly around it. The next ring should be inserted into the groove of the mixer shaft with the identification mark facing up; the rest of the process is specific to the manufacturer's guidelines. Then place the top ring in the same position, with the said mark upwards and do the same thing for all the pistons and rings.