SERVICING
Balancer-shaft Side Clearance
1.
Set a dial indicator with tip
on
the balancer shaft.
2. Measure the side clearance
by
moving the balancer shaft to
the front and rear.
3.
If the measurement exceeds the allowable limit, replace the
balancer shaft.
Factory
spec.
0.070 to 0.220 mm
End play
of
balancer
0.0028 to 0.0087 in.
shaft
0.3
mm
Allowable
limit
0.0118 in.
Balancer-shaft Alignment
1. Support the balancer shaft with V blocks
on
the surface plate
and
set
a dial indicator with its tip on the intermediate journal
at high angle.
2. Rotate the balancer shaft
on
the V block and get the
misalignment (half of the measurement).
3.
If the misalignment exceeds the allowable limit, replace the
balancer
shalt.
Balancer
shaft
a1lgnmenl
Allowable
Jimil
Oil Clearance of Balancer-shaft Journal
O.02mm
0.0008
in.
1. Measure the balancer
~h.aft
journal
0.0.
with
an
outside
micrometer.
2. Measure the
cylinder block bore
1.0.
(A), (8) for balancer shaft
with an inside micrometer.
3.
If
the clearance exceeds the allowable limit, replace the
balancer shaft.
Factory
spec.
0.070 to 0.159.mm
Oil
clearance
of
0.0028 to 0.0063 in.
bah;lncer·shaft
journal
O.2mm
Allowable
limit
0.0079 in.
Balancer-shaft
journal
Factory
spec.
50.92 to 50.94 mm
0.0.
2.0047 to 2.0055 in.
Balancer-shaft
bearing
Factory
spec.
51.01 to 51.08 mm
J.D.
2.0083
10
2.0110 in.
BALANCER
SHAFT
O""-~
\
1)=
~
OJ
L\\
~
MEASURING THE SIDE CLEARANCE
BALANCER
SHAFT
ALIGNMENT
,-
o -
INSPECTING THE
----------l
BALANCER SHAFT
ALIGNMENT
CYLINDER
BLOCK
BORE
BALANCER
SHAFT
JOURNAL
..•
---
./
/-----,
..
....
WESTERBEKE
Engines & Generators
47
--c-J
MEASURING tHE BALANCER
SHAFT
JOURNAL
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