Out-Of-Round And Taper Of Crankshaft
- Measure the dimensions at four different points as shown on each main journal and pin journal with a micrometer.
- Out-of-round is indicated by the difference in dimensions 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)]
: 0.0025 mm (0.0001 in)
Taper [Difference between (A) and (B)]
: 0.0025 mm (0.0001 in)
- If the measured value exceeds the limit, correct or replace crankshaft.
- If corrected, measure the bearing oil clearance of the corrected main journal and/or pin journal. Then select main bearing and/or connecting rod bearing. Refer to [SERVICE DATA AND SPECIFICATIONS ].