l .
After assembling, check the bearings for proper
tightening
and,
ii
necessary, perform the required adjustments.
To
check the
bearing
s
for
proper tightening, proceed as follows:
insert the wheel axle
into the assembled hub and,
using
the
nut,
tighten the inner bushings and races
of
the
bearings
on lhe
axle
with the aid of an additional bushing;
by
turning
and rocking the wheel axle, make
sure
that
it
rotates
freel
y,
without any noticeable play.
The
ax ial play must be within 0.04 and 0.07
rnm.
If
necessary, unscrew
th
e chuck nut and
adjust
the
bearings
for
proper
tightening
.
2.
REPAIRING THE WHEEL ASSEMBLIES AND COMPONENTS
Repairing the Tyre and Inner Tube
Inspect lhe tyre
that
has been removed.
If
its tread
is
worn,
the
side walls damaged, cord ruptured and bead wire broken,
replace
the tyre.
In exceptional cases when the
co
rd
inside the tyre is slightly
da-
maged, the latter should
be
repaired
at
special
maintenance
shops.
\\'hen inspecting the tyre, make sure
thai
its inner
surface
is
free
of
sharp objects stuck to it, which may s
ub
sequently
cause
a
puncture
of
the inner tube.
After
inflating
the removed lube, check
it
for the absence
of
air
leakage. In case
air
leakage
is found
at
the valve, tighten up
the
nut securing lhe valve.
If
th e tube
is
punctured, apply a patch
to
the
damaged
spot,
using R vulcanization method. R
ep
lace the tub
e,
if
badly d
amage
d.
Repairing the Wheel Hub
Repair
the wheel hub
in
case the follo
·w
ing parts are worn:
working surface
of
the brake drum;
tapered roller
be
arings;
splined rim
of
the hub;
or
if
other faults are found making impossible the further
usage
of
the wheels. .
In case the working surface
of
the brake drum, bearings,
splines
are worn or other
signs
of
damag
e are detected, replace the defec-
tive parts with new ones.
Replacing the
Rim
and Spokes
If
any cracks or dents are found on the rim, replace it in the fol-
lowing order:
using
a wrench B
3
-4503, screw out all the nipples from the
spo-
kes, remove the spokes and inspect them. Replace
the
spokes
and
1
~ipp
l
es,
if
defective;
91
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