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120 MAINTENANCE-ENGINE
Journal
wear
The jou rnal
wear
is
measured
using
a
plastigauge
(press
gauge),
which
is inserted
into
the clearance
to
be
measured.
The
plastigauge
indicates
the wear
by
the
amount
it
is compressed and widened
when
the
parts
are
assembled.
Remove
the
cylinder
head
cover, cut strips
of
plasti-
gauge to
journ
al
width,
and
place
a
strip
on
each
jou rnal
parallel to
the
camshaft
and
so
that the
plastigauge
wil
l
be
compressed
between the journal
and the
cylinder
head
cover.
Install the
cylinder
head
cover,
tigh
tening
the
bolts
in
the
correct sequence
with
the
correct
amount
of
torque
(Pg.
46).
Remove
the
cylin
der head
cover,
and measure the
pl astigauge
width
to
determine
the
clearance
between
each
journal and
the
cylinder head cover. If
the
clear-
ance
exceeds
the
service
limit,
replace
the
camshaft.
A. Plastigauge
Table H9
Camshaft Journal/Cylinder Head
Cover
Clearance
Standard
Service
Lim
it
0.030~0.070 mm
0.19
mm
Measure the
diameter of
each camshaft journal
with
a
micrometer. If
a
diameter of any
journal
is
less than
the
service
lim
it,
replace
the camshaft.
Camshaft Journal Diameter Measurement
Table
H10
Camshaft Journal Diameter
Standard
Service
Limit
A,
B
24.950~24.970
mm
24.90 mm
c
21.950-21.970 mm
21.90 mm
Camshaft
runout
Set the
camshaft on the V blocks at
the outside
journals
as shown in the
figure.
Measu
re
runou
t with
a dial
gauge at
the
sprocket
mounting location,
and
replace
the
shaft if
the
runout
exceeds
the service limi
t.
Table H11
Camshaft
Runout
Standard
I
Service Limit
under
0.01
mm
I
0.1
mm
CAMSHAFT CHAIN,
GUIDES,
TENSIONER
Camshaft chain wear
Remove
the camshaft chain,
hold
the
chain
taut
with a force
of
about 5 kg
in
some
manner
such
as
the
one shown
in
Fig.
Hl
7,
and
measure
a
20-li
nk
length.
If the
chain
has
lengthened
beyond
the
service
lim
it,
replace
it
with
a
new
o ne.
Camshaft Chain Length
Measurement
20-1
ink
Length
-
- -
--
-::.!
0 0
0
¢
0
5
kg
Table H 12
Camshaft
Chain 20-link Length
Standard
Service Limit
155.5-
155.6
mm
·1
sB.O
mm
Chain
guide
wear
Remove the chain guides, and
inspect
them
visually
.
Replace a guide if
the
rubber o
r
any
o ther
portion
is
damaged.
Measure the depth of
the
grooves where
the chain
links
run.
Replace a guide
if the
wear
exceeds
the
service
limit.

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   Also See for Kawasaki Z250 1981

This manual is also suitable for:

Kz350 1981

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