CHECKING THE OIL PUMP
1. Check:
oil pump driven gear
Cracks/damage/wear Replace the de-
fective part(s).
2. Measure:
inner-rotor-to-outer-rotor-tip clearance
outer-rotor-to-oil-pump-housing clear-
ance
oil-pump-housing-to-inner-rotor-and-
outer-rotor clearance
Out of specification
Replace the oil
pump.
Inner rotor
Outer rotor
Oil pump housing
Inner-rotor-to-outer-rotor-tip clear-
ance
<Limit>: 0.15mm (0.006 in)
Outer-rotor-to-oil-pump-housing
clearance
0.14 ~ 0.21 mm
(0.0055~0.0083in)
0.04 ~ 0.12 mm
(0.0016~0.0047in)
<Limit>: 0.28 mm (0.0110 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.06 ~ 0.11mm
<Limit>: 0.20 mm (0.0079 in)
a
a
b
b
c
c
ENG
4 - 47
OIL PUMP
(0.0024~0.0043 in)
