5-104
E
POWR
CRANKSHAFT
SERVICE POINTS
Crankshaft removal
1. Remove:
• Crankshaft
1
• Crankshaft journal lower bearings
(from the lower crankcase)
• Crankshaft journal upper bearings
(from the upper crankcase)
NOTE:
Identify the position of each crankshaft journal
bearing so that it can be reinstalled in its origi-
nal place.
1
Crankshaft inspection
1. Measure:
• Crankshaft runout
Out of specification
→
Replace the
crankshaft.
Maximum crankshaft runout:
0.03 mm (0.0012 in)
2. Check:
• Crankshaft journal surfaces
• Crankshaft pin surfaces
Scratches/wear
→
Replace the crank-
shaft.
• Bearing surfaces
Scratches/wear
→
Replace the crank-
shaft journal bearing.
3. Measure:
• crankshaft-journal-to-crankshaft-journal-
bearing clearance
Out of specification
→
Replace the
crankshaft journal bearings.
Crankshaft-journal-to-crankshaft-
journal-bearing clearance:
0.004–0.028 mm
(0.0002–0.0011 in)
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