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Table of Contents
138 MAINTENANCE-ENGINE
BALL
,
NEEDLE BEARINGS
Ball
bearing
wear, damage
Since the ball bearings
are
made to
extremely
close
tolerances,
the wear
must
be judged by feel
rather then
by measurement.
Clean
each bearing
in
a
high
tlash-point
solvent,
dry
it
(do not
spin
it
while it
is
dry),
and
oil it.
Spin
it by
hand
to
check
its
condition.
If it
is
noisy,
does
not
spin
smooth ly,
or
has
any
rough
spots,
replace it.
Needle b earing
wear,
damage
The rollers
in
the needle
bearings
wear
so
little that
the
wear
is di
ffic
ult
to measure.
In stead
,
inspect
the
bearings for
abrasion, color
change,
or
other damage.
If
there is
any doubt
as
to the
condition of
either
bearing,
replace
it.
OIL SEALS
Oil seal damage
Inspect
the
oil
seals,
and
replace
any if the
lips
are
missh apen,
discolored (indicating
the
rubber has
dete·
riorated}, hardened,
or otherwise
damaged, since
an oil
seal
is
nearly
always
damaged on removal
,
and removed
oil
seals must be
replaced.
When
pressing
in an
oil
seal
which is marked, press it in with
the
mark
facing
out.
Press
the
seal in so
that
the
face.
of the
seal
is
level with
the
surface of
its
hole.

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Table of Contents

   Also See for Kawasaki Z250 1981

This manual is also suitable for:

Kz350 1981

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