Checking The Friction Plates; Checking The Clutch Plates - Yamaha R1 Series 2015 Service Manual

• Thrust plate
• Clutch housing assembly
• Bearing
• Washer
EAS30348

CHECKING THE FRICTION PLATES

The following procedure applies to all of the fric-
tion plates.
1. Check:
• Friction plate 1 (blackish shoe)
• Friction plate 2 (whitish shoe)
Damage/wear
as a set.
2. Measure:
• Friction plate thickness
Out of specification
plates as a set.
TIP
Measure the friction plate at four places.
Friction plate thickness
2.72–2.88 mm (0.107–0.113 in)
Wear limit
2.62 mm (0.103 in)
EAS30349

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
plates as a set.
Thickness gauge
90890-03180
Feeler gauge set
YU-26900-9
Replace the friction plates
Replace the friction
Replace the clutch
Clutch plate 1 thickness
2.46–2.74 mm (0.097–0.108 in)
Warpage limit
0.10 mm (0.004 in)
Clutch plate 2 thickness
2.18–2.42 mm (0.086–0.095 in)
Warpage limit
0.10 mm (0.004 in)
3. Measure:
• Assembly width "a" of the friction plates and
clutch plates
Out of specification
Assembly width
48.3–49.3 mm (1.90–1.94 in)
TIP
• Perform the thickness measurement without
applying the oil.
• This step should be performed only if the fric-
tion plates and clutch plates were replaced.
• To measure the total width of the friction plates
and clutch plates, combine 10 friction plates
and 9 clutch plates as shown.
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a. Assembly width adjusted by clutch plate "1".
b. Select the clutch plate from the following ta-
ble.
5-57
CLUTCH
Adjust.
a
a