SERVICING
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 allowable limit, replace the oil
pump rotor assembly.
Clearance
between
Factory
spec.
outer
rotor
and
pump
body
Allowable
limit
Clearance between Rotor and Cover
1.
Put a strip
of
plastigage onto the
rotor face with grease.
0.100
to
0.184
mm
0.0039
to
0.0072
in.
0.3
mm
0.0118
in.
2.
Install the cover and tighten the screws with the specified
torque.
3.
Remove the cover carefully,
and
measure the amount of the
flattening with the scale and get the clearance.
4.
If the clearance exceeds the allowable limit, replace oil pump
rotor assembly and the cover.
Factory
spec.
0.02510 0.075
mm
Clearance
between
0.0010
to
0.0030
in.
rotor
and
cover
0.225 mm
Allowable
limit
0.0089 in.
7.9
to
9.3
N·m
Tightening
torque
Oil
pump
cover
screw
0.80
to
0.95
kgf·m
5.8
to
6.9 tt-Ibs .
..,y"
WESTERBEKE
Engines
&
Generators
54
PLASTIGAGE
FEELER
GAUGE
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