5.2
LUBRICATING
SYSTEM
92.4mm STROKE
SERIES
WSM,01093
Factory
spec.
LUBRICATING
SYSTEM
I
3.0
to 4.5 kgf/cm2
294.2 to 441 kPa
42.7 to 64 psi
CHECKING
CO
19F047
S
E
RVlCl
NG
[I]
OIL
PUMP
C019F048
/
I
C019F049
w
CO19F050
Engine
Oil
Pressure
1.
Remove the
oil
switch
and set a pressure tester
(Code
No:
0791 6-3203
1).
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.
0
Engine oil insufficient
0
Oil strainer clogged
Excessive
oil
clearance of bearing
0
Foreign matter
in
the relief valve
0
Oil pump defective
0
Oil gallery clogged
I
I
Allowable
I
0.5 kgfkm2
limit 49 kPa,
7
psi
I
At idle speed
36 psi
limit
At
rated speed
Rotor and Lobe Clearance
1.
Measure the clearance between ,abes of the inner
2.
Measure the clearance between the outer rotor
3.
If
the clearance exceeds the factory spec. replace
rotor and the outer rotor
with
a feeler gauge.
and the pump body
with
a feeler gauge.
the oil pump rotor assembly.
i
I
Clearance between
inner rotor and
0.03 to 0.14 mm
0.0012
to
0.0055
in.
I
outer rotor
I
I
I
I
1
I
Clearance between 0.11
to0.19
mm
outer
rotor
and
0.0043
to
0.0075
in.
I
auma bodv
Clearance between
Rotor
and Cover
1.
Put a strip of plastigage (Code
No:
07909-30241)
onto the rotor face
with
grease.
2.
Install the cover and tighten the screws.
3.
Remove the cover carefully, and measure the
width of the press gauge
with
a sheet of gauge.
4.
If
the clearance exceeds the factory spec. replace
oil pump rotor assembly.
i
I
End clearance 0.105to0.150 mm
betweeninnerrotor and cover
I
:;gry
1
0.0041 to 0.0059 in.
I
s-99
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