Out-Of-Round And Taper Of Crankshaft

WARNING: This page is about a different car, the 2013 Nissan Armada. However, it is still accessible from the selected car via links, so may be relevant.

Measure dimensions at four different points as shown below on each journal and pin.
Out-of-roundness is indicated by the difference in dimension between "X" and "Y" at "A" and "B".
Taper is indicated by the difference in dimension between "A" and "B" at "X" and "Y".
Limit

Out-of-round [Difference between (X) and (Y)]

: 0.002 mm (0.0001 in)

Taper [Difference between (A) and (B)]

: 0.002 mm (0.0001 in)

Fig 1: Identifying Crankshaft Out-Of-Round And Taper Dimensions
Courtesy of NISSAN NORTH AMERICA, INC.
If measured value exceeds the standard, correct or replace crankshaft.
If corrected, measure the bearing oil clearance of the corrected journal or pin. Then select the main bearing or connecting rod bearing.