Checking The Crankshaft; Checking The Crankshaft Drive Sprocket; Checking The Crankshaft Journal Bearings - Yamaha YZF-R1S Service Manual

CRANKSHAFT
EAS00395

CHECKING THE CRANKSHAFT

1. Measure:
S crankshaft runout
Out of specification ! Replace the crank-
shaft.
Crankshaft runout
Less than 0.03 mm (0.0012 in)
2. Check:
S crankshaft journal surfaces
S crankshaft pin surfaces
S bearing surfaces
Scratches/wear ! Replace the crankshaft.
CHECKING THE CRANKSHAFT DRIVE
SPROCKET
1. Check:
S crankshaft drive sprocket 1
Cracks/damage/wear ! Replace the de-
fective part(s).
CHECKING THE CRANKSHAFT JOURNAL
BEARINGS
1. Measure:
S crankshaft-journal-to-crankshaft-journal-
bearing clearance
Out of specification ! Replace the crank-
shaft journal bearings.
Crankshaft-journal-to-crankshaft-
journal-bearing clearance
0.014 X 0.037 mm
(0.0006 X 0.0015 in)
<Limit>: 0.10 mm (0.0039 in)
CAUTION:
Do not interchange the crankshaft journal
bearings. To obtain the correct crankshaft-
journal-to-crankshaft-journal-bearing clear-
ance and prevent engine damage, the crank-
shaft journal bearings must be installed in
their original positions.
5-93
ENG