Crankshaft Inspection
Crankshaft InspectionStraightness
NOTE: Clean the crankshaft oil passages with pipe cleaners or a suitable brush.
Check the keyway and threads.
1. Support the crankshaft with a lathe-type tool or V blocks.
2. Measure runout on all main journals to make sure the crank is not bent. Rotate the crankshaft two complete revolutions. The difference between measurements on each journal must not be more than the service limit.
Out-of-Round and Taper
1. Measure out-of-round at the middle of each rod and main journal in two places. The difference between measurements on each journal must not be more than the service limit.
2. Measure taper at the edge of each rod and main journal. The difference between measurements on each journal must not be more than the service limit.