Checking The Oil Pump; Checking The Relief Valve - Yamaha R1 Series 2015 Service Manual

EAS30337

CHECKING THE OIL PUMP

1. Check:
• Oil pump driven sprocket "1"
Cracks/damage/wear
• Oil pump housing "2"
Cracks/damage/wear
2. Measure:
• Outer-rotor-to-oil-pump-housing
"a"
• Oil-pump-housing-to-inner-rotor-and-outer-
rotor clearance "b"
Out of specification
part(s).
Outer-rotor-to-oil-pump-housing
clearance
0.09–0.15 mm (0.0035–0.0059 in)
Limit
0.22 mm (0.0087 in)
Oil-pump-housing-to-inner-and-
outer-rotor clearance
0.06–0.11 mm (0.0024–0.0043 in)
Limit
0.18 mm (0.0071 in)
Replace.
Replace.
2
1
clearance
Replace the defective
1. Inner rotor
2. Outer rotor
3. Oil pump housing
3. Check:
• Oil pump operation
Rough movement
(2) or replace the defective part(s).
EAS30338

CHECKING THE RELIEF VALVE

1. Check:
• Relief valve body "1"
• Relief valve "2"
• Spring "3"
• Damage/wear
part(s).
5-49
OIL PUMP
a
b
Repeat steps (1) and
Replace the defective