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166
CHA
I'TER
FIVE
Balan
cer
shaft
end play
I.
Make
certain
the
balancer
shaft
bearings (8 , Fig-
ure
Il
l
) are
fully seated
in
both
crankcase
halves.
2. Measure the thickness
of
the straig htedge
as
shown in
Figure
112.
This dimension
will
be used
in
the
following
steps.
3. Use a
dial
vernie
r caliper
to
measure the
width
of
the
balancer
shaftat
the machined
surfaces where
it
contac
ts
the bearing
inner
race
(Figure
11
6). Re-
cord
this
measurement.
4
. Position
a
straightedge
across the
sealingsurface
of
the
left side
crankcase
hal
f.
5.
Using
a
dial verniercaliperordepth gauge.
care-
fully
measure the distance
from
the top
of
the
straightedge
to the left s
ide balancer
shaft
bearing
(Fi g ure
It
7)
. Note
the
dimension
and subtract
the
thickness
of
the straightedge
in
Step
2.
Record
this
~
measurement.
6.
U
si ng
a dial
ve
rnier
caliper
or
depth gauge,
care-
fully measure
the distance from
the top of
the
straightedge
to the
right
side
balancer
shaft
bearing
(Figu re
118). Note
thc
dimension and
subtract
the
thickness
of
the
straightedge
in
Step
2.
Record
this
measuremen
t.
7.
The
specified
balancer
shaft
end
play
is
listed
in
Table
2.
Use
the
following
equation
to
select
the cor-
rect
shim
thickness
to
obtain the
specified cnd
play.
5.
Using
a
dial
verniercaliperordepth
gauge,
care-
fully
measure the
distance
from
the
top of
the
straightedge
to
the left side
crankshaft
bearing (Fig-
ure
114).
Note
the
dimension
and subtract
the
thick-
ness
of
the
straightedge
in Step
2.
Record
this
measurement.
6.
Us
ing
a
dial
vernier
calipe r
or
depth
gauge , care-
fully measure the distance
from
the
top of
the
straightedge to
the
right side
crankshaft
bearing
(Figure 11
5).
Note
the
dimension and subtract
the
thickness
of
the straightedge
in
Step
2. Record this
measurement.
7. The
specified
crankshaft
end
play
is
listed
in
Ta-
ble
2. Use
the
following
equation
to
select
the
cor-
rect shim
thickness
to
obtain
the
specified end
play.
a
~
(b
+
c)
-
(d
+
e)
a
=
the
new
shim
thickn
ess
.
b
=
the
distance
recorded
in
Step
5.
c
~
the
distance
recorded
in
Step
6.
d
=
the
width
of the
crankshaft
(Step 3).
e
~
the specified end
play
in
Ta
ble
2.
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