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Kawasaki Z250 1981 Service Manual Page 149

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Table of Contents
Axle
A bent ax
le
causes vibration, poor
handl
ing,
and
instability
.
To measure axle runout,
remove
the
ax
le, place
it
in
V
blocks that are
100
mm apart, and set a dial
gauge to
the
axle
at a point
halfway
between the blocks.
Turn the axle
to
measure
the
runout.
The amount
of runout is the
amount
of dial variation.
If runout exceeds the usable
range,
straighten the
axle or replace it.
If
the axle cannot be
straightened
to
within usable range, or
lf
runout exceeds the
service
limit,
replace the
axle.
Axle
Runout
100mm
Table
JS
Axle
Runout/100
mm
I
Standard
Usable Range
I
I
under 0.05 mm
0.2 mm
I
Wheel Bearings, Grease Seals
Inspection and lubrication
Service Limit
0.7 mm
If
the
grease seals are examined without removing
the seals themselves,
look
for discoloration
(indicating
the
rubber
has
deteriorated), hardening, damage
to
the
internal ribbing, or other damage. If the seal or
internal
ri
bbing
has
hardened, the
clearance between the
seal
and the axle sleeve
will
not be
taken
up, which will
allow dirt and moisture to enter and reach
the
bearing.
If in doubt
as
to
its
condition and whenever
the
seal
is
removed
for greasing the bearing,
the
seal shou ld be
replaced.
The seals
are generally damaged upon
removal.
Since the wheel bearings are made to extremely
close
tolerances, the clearance cannot normally be measured.
Wash
the
bearing with a high
flash-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
smoothly,
or has any
rough
spots, it must be
replaced.
If the same bearing is to
be
used again, re-wash
it with a high flash-point solvent, dry
it,
and pack
it
with good quality bearing grease before instal lation.
Turn the bearing by
hand
a few times to make sure the
grease is
distributed
uniformly inside
the
bearing, and
wipe the old grease
out
of the
hub
before
bearing
installation.
Clean and grease the wheel
bearings and
Table
J6-
Grease Seals, Wheel Bearings
Front
Wheel
MAINTENANCE-CHASSIS 143
the
fro nt
hub
gear housing in accordance with the
Periodic Maintenance Chart
(Pg. 10).
Rear Wheel Coupling
Damper inspection
Remove
the
rear wheel coupling
(Pg.
99), and
in·
spect the
rubber
damper.
Replace the damper
if
it
appears
to
be damaged
or deteriorated.
A. Rubber Damper
Rear Wheel
Hub Left
Hub Right
Speedometer
Coupling
Hub
Left
Hub Right
Gear Housing
Grease Seal
---
PJ223508
P1304208
PJN35527
-
-
Pl254708
Bearing
#6202Z
#6202Z
- - -
#6205
#6303Z
#6303Z

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Kz350 1981

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