1
ENGINE
[3] LUBRICATING SYSTEM
CHECKING
SERVICING
(1) Oil Pump
81700·82100·82400 WSM,11770
Engine Oil Pressure
1.
Remove
the
oil switch and set a pressure tester (Code No:
07916-32031).
2.
Start
the
engine.
After
warming
up, measure
the
oil pressure
of
both idling and rated
speeds.
3.
If
the
oil pressure
is
less
than
the
allowable
limit,
check
the
following
.
.. Engine oil insufficient .. Oil pump defective
.. Oil strainer clogged .. Oil gallery clogged
..
Excessive
oil clearance
of
bearing
.. Foreign
matter
in the relief valve
Factory
More than
49
kPa
0.5 kgflcm
2
spec.
7
psi
At
idle
speed
Allowable
-
limit
Oil
pressure
196to441
kPa
,
Factory
2.0
to
4.5
kgflcm
2
spec.
36to
64
psi
At
rated
speed
Allowable
147
kPa
limit
1.5
k9f/cm2
27
PSI
Rotor Lobe Clearance
1.
Measure the clearance between lobes
of
the
inner
rotor
and
the
outer
rotor
with
a feeler gauge.
2.
If
the clearance exceeds the factory specification, replace
the
oil pump
rotor
assembly.
Outer
and inner rotor
clearance
Factory
spec.
0.06toO.18 mm
0.00236
to
0.00709 in.
Clearance between Outer Rotor and Pump Body
1.
Measure the clearance
between
the
outer
rotor
and
the
pump body
with
a feeler gauge.
2.
If
the
clearance exceeds
the
factory specification, replace
the
oil pump rotor assembly.
Radial clearance
0.10toO.18 mm
between
outer
rotor Factory
spec.
and pump body
0.00394
to
0.00709 in.
1-544
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