Crankshaft engine problem Brisbane - BENT

Most new crankshafts will attain some bend during normal operation. Up to.004" to.006" may be detectable at time of regrinding. This amount of bend is acceptable and can mostly be removed by regrinding. Crankshafts with more bend should be straightened before regrinding. Crankshafts with sever bend should be replaced. Crankshafts with bend can be straightened in a special jig. The shaft should always be mildly heated to reduce the chance of developing a crack. All straightened shafts should be crack-tested after straightening. Crankshafts with badly localised overheating on a flogged journal may have bent at the position of where the web and journal meet. This type of bend can be removed by the use of special shaped punches used against the radius. Again after straightening the radius must be reclaimed and crack- tested. All of these straightening process's can damage the shaft beyond repair and this should be considered with the customer before being attempted. Disclaimer Agreement : Every care has been taken in writing this information and procedures, but no responsibility can be excepted for errors, omissions or misuse of this information and procedures. The information available on this site is for your instruction only and cannot be copied for sale, © copyright 2001 UMR Engines
Performance Engines
Checking bent crankshaft for run-out
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Crankshaft engine problem Brisbane -

BENT

Most new crankshafts will attain some bend during normal operation. Up to.004" to.006" may be detectable at time of regrinding. This amount of bend is acceptable and can mostly be removed by regrinding. Crankshafts with more bend should be straightened before regrinding. Crankshafts with sever bend should be replaced. Crankshafts with bend can be straightened in a special jig. The shaft should always be mildly heated to reduce the chance of developing a crack. All straightened shafts should be crack-tested after straightening. Crankshafts with badly localised overheating on a flogged journal may have bent at the position of where the web and journal meet. This type of bend can be removed by the use of special shaped punches used against the radius. Again after straightening the radius must be reclaimed and crack-tested. All of these straightening process's can damage the shaft beyond repair and this should be considered with the customer before being attempted. Disclaimer Agreement : Every care has been taken in writing this information and procedures, but no responsibility can be excepted for errors, omissions or misuse of this information and procedures. The information available on this site is for your instruction only and cannot be copied for sale, © copyright 2001 UMR Engines
Performance Engines
Checking bent crankshaft for run-out
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