SERVICING
Idle Gear Side Clearance
1.
Set a dial indicator with its tip
on
the idle gear.
2.
Measure the side clearance
by
moving the idle gear
to
the
front and rear.
3.
If the measurement exceeds the allowable limit, replace the
idle gear collar.
Factory
spec.
0.15 to 0.30
mm
0.0059 to 0.0118
in.
Idle
gear
side
clearance
0.9
rnm
Allowable
limit
0.0354 in.
Camshaft Alignment
1.
Support the camshaft with V block on the surface plate and set
a
dial indicator with its tip
on
the intermediate journal at right
angle.
2. Rotate the camshaft on the V blocks and get the misalignment
(half
of
the measuremeni).
3.
If the misalignment exceeds the allowable limit, replace the
camshaft.
Camshaft
alignment
Allowable
limit
Camshaft Side Clearance
0.01 mm
0.00039
in.
1.
Set
a dial indicator with its tip
on
the camshaft.
2. Measure the side
clearance by moving the cam gear to the
front and rear.
3. If the measurement exceeds the allowable limit, replace the
camshaft stopper.
Factory
spec.
0.07 to 0.22
mm
0.0028 to 0.0087
in.
End play of camshaft
0.30 mm
Allowable
limit
0.0118 in.
Cam Height
1
..
Measure the height of the cam at its highest point with
an
outside micrometer.
2.
If the measurement is less than the allowable limit, replace the
camshaft.
Intake
37.63 mm
Factory
valve
1.4815 in.
spec.
Exhaust
38.96mm
Intake
and
exhaust
cam
valve
1.5338 in.
heighl
Intake
37.13 mm
Allowable
valve
1.4618 in.
limit
Exhaust
38.46
mm
valve
1.5141 in.
~
WESTERBEKE
Engines & Generators
45
DIAL
INDICATOR
MEASURING GEAR SIDE CLEARANCE
CAMSHAFT ALIGNMENT
MEASURING CAM HEIGHT
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