Yamaha YZF-R1S Service Manual - Eng
5-67
OIL PAN AND OIL PUMP
ENG
EAS00364
CHECKING THE OIL PUMP
1. Check:
Soil pump driven gear
1
Soil pump rotor housing
2
Soil pump cover
Cracks / damage / wear
! Replace the de-
fective part(s).
2. Measure:
Sinner-rotor-to-outer-rotor-tip clearance
a
Souter-rotor-to-oil-pump-housing clearance
b
1
Inner rotor
2
Outer rotor
3
Oil pump housing
Inner-rotor-to-outer-rotor-tip
clearance
0.01
X 0.10 mm
(0.0004
X 0.0039 in)
Outer-rotor-to-oil-pump-housing
clearance
0.09
X 0.15 mm
(0.0035
X 0.0059 in)
3. Check:
Soil pump operation
Rough movement
! Repeat steps (1) and
(2) or replace the defective part(s).
EAS00365
CHECKING THE RELIEF VALVE
1. Check:
Srelief valve body
1
Srelief valve
2
Sspring
3
SO-ring
4
Damage / wear
! Replace the defective
part(s).