Removing The Crankshaft; Checking The Crankshaft; Installing The Crankshaft - Yamaha YZF-R15 Service Manual

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REMOVING THE CRANKSHAFT

1. Remove:
• Crankshaft "1"
NOTE:
• Remove the crankshaft with the crankcase
separating tool "2".
• Make sure the crankcase separating tool is
centered over the crankshaft.
CAUTION:
• To protect the end of the crankshaft, place
an appropriate sized socket between the
crankcase separating tool bolt and the
crankshaft.
• Do not tap on the crankshaft.
Crankcase separating tool
YSST-265
1

CHECKING THE CRANKSHAFT

1. Measure:
• Crankshaft runout
Out of specification → Replace the crank-
shaft, bearing or both.
NOTE:
Turn the crankshaft slowly.
Runout limit C
0.030 mm
2. Measure:
• Big end side clearance
Out of specification → Replace the crank-
shaft.
3. Measure:
• Crankshaft width
Out of specification → Replace the crank-
shaft.
2
4. Check:
• Crankshaft sprocket
Damage/wear → Replace the crankshaft.
• Bearing
Cracks/damage/wear → Replace the crank-
shaft.
5. Check:
• Crankshaft journal
Scratches/wear → Replace the crankshaft.
• Crankshaft journal oil passage
Obstruction → Blow out with compressed air.

INSTALLING THE CRANKSHAFT

1. Install:
• Crankshaft "1"
5-61
CRANKSHAFT
Big end side clearance D
0.110–0.410 mm
Width A
47.95–48.00 mm

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Yzf-r15 2008

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