G37x Sedan AWD V6-3.7L (VQ37VHR) (2010)
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Measure the outer diameter of crankshaft pin journal with a micrometer (A).
Standard : Refer to EM-153, "Cylinder Block". See: Specifications
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If out of the standard, measure the connecting rod bearing oil clearance. Then use undersize bearing. Refer to See: Connecting Rod
Bearing/Service and Repair/Connecting Rod Bearing.
CRANKSHAFT OUT-OF-ROUND AND TAPER
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Measure the dimensions at four different points as shown in the figure on each main journal and pin journal with a micrometer.
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Out-of-round is indicated by the difference in the dimensions between (d) and (c) at (a) and (b).
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Taper is indicated by the difference in the dimensions between.
Limit : Refer to EM-153, "Cylinder Block". See: Specifications
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If the measured value exceeds the limit, correct or replace crankshaft.
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If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then select the main bearing and/
or connecting rod bearing. Refer to See: Crankshaft Main Bearing/Service and Repair and/or See: Connecting Rod Bearing/Service and
Repair/Connecting Rod Bearing.
CRANKSHAFT RUNOUT
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Place V-block on precise flat table, and support the journals on both ends of crankshaft.
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Place a dial indicator straight up on the No. 3 journal.
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While rotating crankshaft, read the movement of the pointer on a dial indicator. (Total indicator reading)
Standard and limit : Refer to EM-153, "Cylinder Block". See: Specifications
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If it exceeds the limit, replace crankshaft.
CONNECTING ROD BEARING OIL CLEARANCE