Altima SE L4-2.4L (KA24DE) (1997)
1. Set main bearings in their proper positions on cylinder block and main bearing cap.
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Confirm that correct main bearings are selected by using the plastigage method or the bore gauge/micrometer method.
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Apply new engine oil to bearing surfaces.
2. Install crankshaft and main bearing caps and tighten bolts to 46 - 56 Nm (34 - 41 ft. lbs.).
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Apply new engine oil to the bolt thread and seat surface.
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Prior to tightening bearing cap bolts, shift crankshaft back and forth to properly seat the bearing cap.
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Tighten bearing cap bolts gradually in two or three steps. Start with center bearing and move outward as shown in figure.
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After securing bearing cap bolts, make sure crankshaft turns smoothly by hand.
3. Measure crankshaft end play. The crankshaft end play standard value 0.05 - 0.18 mm (0.0020 - 0.0071 inch). The limit is 0.3 mm (0.012 inch). If
beyond the limit, replace thrust bearing with a new one.
4. Install connecting rod bearings in connecting rods and connecting rod caps.
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Confirm that correct bearings are used. Install bearings so that the oil hole in each connecting rod aligns with the oil hole of the bearing.
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Apply new engine oil to bearing surfaces, bolt threads and seating surfaces.