Pathfinder 2WD V6-4.0L (VQ40DE) (2009)
Undersize Bearing Usage Guide
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When the specified main bearing oil clearance is not obtained with standard size main bearings, use underside (US) bearing.
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When using undersize (US) bearing, measure the main bearing inner diameter with bearing installed, and grind main journal so that the main
bearing oil clearance satisfies the standard.
CAUTION:
In grinding crankshaft main journal to use undersize bearings, keep the fillet R [1.5 - 1.7 mm (0.059 - 0.067 in)].