Checking The Friction Plates; Checking The Clutch Plates - Yamaha YZF-R1 2007 Service Manual

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• Springs
• Pressure plate 2
• Conical spring washer
• Thrust plate 2
EAS25100

CHECKING THE FRICTION PLATES

The following procedure applies to all of the
friction plates.
1. Check:
• Friction plate
Damage/wear → Replace the friction
plates as a set.
2. Measure:
• Friction plate thickness
Out of specification → Replace the friction
plates as a set.
NOTE:
Measure the friction plate at four places.
Friction plate thickness
2.90–3.10 mm (0.114–0.122 in)
Wear limit
2.80 mm (0.1102 in)
EAS25110

CHECKING THE CLUTCH PLATES

The following procedure applies to all of the
clutch plates.
1. Check:
• Clutch plate
Damage → Replace the clutch plates as a
set.
2. Measure:
• Clutch plate warpage
(with a surface plate and thickness gauge
"1")
Out of specification → Replace the clutch
plates as a set.
Warpage limit
0.10 mm (0.0039 in)
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3. Measure:
• assembly width "a" of the friction plates and
clutch plates
Out of specification → Adjust.
Assembly width
42.4–43.0 mm (1.67–1.69 in)
NOTE:
Perform the thickness measurement without
applying the oil.
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a. Assembly width adjusted by clutch plate "1"
and "2".
b. Select the clutch plate from the following
table.
Clutch plate "1"
Part No.
4B1-16324-00
5VY-16325-00
4B1-16325-00
5-48
CLUTCH
Thickness
1.6 mm (0.062 in)
2.0 mm (0.079 in) STD
2.3 mm (0.091 in)