Crankshaft: Testing and Inspection

Checking crankshaft clearances
Clean the crankshaft and measure the crankpins with a micrometer. Measurements should be taken at several points round the circumference. The out-of-round (ovality) of the main journals must not exceed 0.003 mm. If the measurements are close to or in excess of this wear, the crankshaft should be ground down to the specified undersize.