Crankshaft - Out-of-Round & Taper
CRANKSHAFT1. Check crankshaft main and pin journals for score, wear or cracks.
2. With a micrometer, measure journals for taper and out-of round.
Out-of-round (X - Y):
Main journal: ............Less than 0.005 mm (0.0002 inch)
Pin journal: ..............Less than 0.003 mm (0.0001 inch)
Taper (A - B):
Main journal: ...............Less than 0.005 mm (0.0002 inch)
Pin journal: .................Less than 0.0025 mm (0.0001 inch)
3. Measure crankshaft runout.
Runout (Total indicator reading): .........Less than 0.05 mm (0.0020 inch)