OIL PUMP
11710404
EAS00364
CHECKING THE OIL PUMP
1. Check:
•
oil pump drive gear
•
oil pump driven gear
©
•
oil pump housing
•
oil pump housing cover
Cracks/damage/wear
-»
Replace the
defective part(s).
2. Measure:
•
inner-rotor-to-outer-rotor-tip clearance A
•
outer-rotor-to-oil-pump-housing clear-
ance
\B\
•
oil-pump-housing-to-inner-rotor-and-
outer-rotor clearance
\c\
Out of specification
-»
Replace the oil
pump.
©
Inner rotor
(2)
Outer rotor
(3)
Oil pump housing
Inner-rotor-to-outer-rotor-tip clear-
ance
0.15 mm (0.006 in) or less
<Limit>: 0.23 mm (0.009 in)
Outer-rotor-to-oil-pump-housing
clearance
0.13 ~ 0.18 mm (0.005 ~ 0.007 in)
<Limit>: 0.25mm (0.010 in)
Oil-pump-housing-to-inner-rotor-
and-outer-rotor clearance
0.07 ~ 0.12 mm (0.003 ~ 0.005 in)
<Limit>: 0.19 mm (0.008 in)
3. Check:
•
oil pump operation
Rough movement
-»
Repeat steps (1) and
(2) or replace the defective part(s).
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