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Table of Contents
252 SUPPLEMENT-1981 KZ305A
Rim,
Spokes
The
rim of each
wheel
is made
of
steel and is con-
nected to the
hub by the spokes.
A rim band
around
the outside center
of the rim keeps
the tube from
coming
into
direct contact with the
spoke
nipples.
Since the spokes
must
withstand repeated stress,
it is
important
to
take sufficient care
that the spokes
are not allowed to
loosen and that they
are tightened
evenly. Loose or
unevenly tightened
spokes
cause
the
rim to warp, increase the
possibility of
spoke breakage,
and hasten
nipple
and
spoke
metal fatigue.
NOTE:
The
rim
size
shown
in Table N36
is
the
outer
width and
diameter,
both in
inches.
Table N36
Rim Size
Front
1.60
x
18
I
Rear
2.15 x 16
I
Spoke breakage
If
any
spoke breaks, it
should be
replaced immediate-
ly.
A missing
spoke places an
additional
load
on the
other spokes, which
will eventually
cause
other
spokes
to
break.
Periodically check
that all
the
spokes are tightened
evenly since they stretch a
certain amount
during
use.
Standard
spoke
tightening torque is 0.30
kg-m (26
ft-lbs).
Over·or
under-tightening may cause breakage.
Rim runout
Set
a dial gauge against
the side
of the rim,
and
rotate
the
wheel to
measure
axial
runout. The difference be-
tween the
highest and lowest dial readings is the
amount
of
axial runout.
Set
the dial gauge against the
inner circumference
of
the
rim, and
rotate the
wheel
to
measure radial
runout.
The difference between
the highest
and
lowest
dial
readings is the amount
of radial runout
A.
Axial
Runout Measurement
B. Radial Runout Measurement
Table N37 Rim Runout
Axial
Radial
Service Limit
2mm
2mm
A certain amount
of rim warp (runout)
can be
corrected
by recentering
the
rim. Loosen some spokes
and tighten others
to change
the
position of
different
parts
of the rim.
If the rim
is bad
ly
bent,
however
1
it
should
be
replaced.
Axle
A
bent axle
causes vibration,
poor
handling,
and
instability.
To
measure axle
runout,
remove
the
axle, place it
in
V
blocks
that are 100 mm
apart,
and
set
a
dial gauge
to
the
axle at a
poin
t halfway
between the blocks.
Turn
the
axle
to
measure
the
runout.
The
amout of
runout is
the amount of
dial variation.
If runout
exceeds the usable
range,
straighten the
axle within the
usable
range or
replace it. If the axle
cannot be
straightened
to
within the usable
range, or
if
runour exceeds
the service
limit,
replace
the
axle.
Axle Runout
!
00
mm
Table N38 Axle Runout/100 mm
Usable Range
Service
Limit
Front
and
0.2
mm
0.7
mm
Rear
Wheel Bearings, Grease Seals
A
grease
seal
is
fitted
in
the speedometer
gear
hous-
ing,
in
the right side of the
front
hub, and in the rear
wheel
coupling.
Each
grease
seal
is a rubber ring e·
quipped
with a steel
band on its outer
circumference.
The grease
seal inner
lip
is held
against the
axle
collar
by a wire spring band. Since
the
grease seal not
only
seals in
the wheel bearing
grease
but also
keeps
dirt
and
moisture from entering
the
hub,
the
use of
a
dam·
aged grease
seal
will
cause the
wheel
bearing to
wear
quickly.

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   Also See for Kawasaki Z250 1981

This manual is also suitable for:

Kz350 1981

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