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CHAPTER 5.
CHASSIS
5-l. FRONT WHEEL
A. Removal
1.
Remove cotter pin from front axle nut.
2.
Remove the front axle nut.
3.
Loosen the two axle holder nuts at
the bottom of the fork leg.
Raise the front wheel of the machine by
4.
placing suitable stand under the engine.
Remove the front wheel axle by simul-
5.
taneously twisting and pulling out on the
axle. Then remove the wheel assembly.
The speedometer
gear unit housing must
be removed.
B. Front axle inspection
Remove any corrosion from axle with emery
cloth. Place the axle on a surface plate and
check for bends. If bent, replace axle.
C. Front wheel inspection
1. A rim can develop warpage. It is due to
(1) running the wheel into an object and
bending the outer rim, or (2) one or more
spokes loosening.
2. Check for warpage by mounting the wheel
on a stand (or, if the wheel is attached to
a motorcycle, it can be blocked up and
held in place). Use some device to measure
or detect movement then slowly spin the
wheel and note the amount of rim "run-
out". It should not exceed 2 mm(0.08 in).
3. If all the spokes are tight, and the rim
shows no obvious signs of damage, and
yet run out is still excessive, do the follow-
ing:
a) If the run out is up and down, loosen
spokes opposite the high spot and tighten
the spokes at the high spot.
b) If the run out is sideways, loosen the
spokes at the high spot, and tighten
the spokes opposite the high spot.
D. Replacing wheel bearings
If the bearings allow play in the wheel hub or
if wheel does not turn smoothly, replace the
bearings as follows:
Clean the outside of the wheel hub.
1.
Drive the bearing out by pushing the
2.
spacer aside and tapping around the
perimeter of the bearing inner race with a
soft metal drift pin and hammer. The
spacer "floats" between the bearings. Both
bearings can be removed in this manner.
3.
To install the wheel bearing, reverse the
above sequence. Be sure to grease the
bearing before installation. Use a socket
that matches the outside race of the bear-
ing as a tool to drive in the bearing.
E. Installing front wheel
When installing front wheel, reverse the re-
moval procedure. Note the following points:
1.
Lightly grease lips of front wheel oil seals
and gear teeth of speedometer drive and
driven gears. Use lightweight lithium soap
base grease.
2.
Make sure there is enough gap between
disc pads.
3.
Check for proper engagement of the boss
on the outer fork tube with the locating
slot on speedometer gear unit housing.
4.
Always secure the front wheel axle as
follows:
a Tighten the front axle nut.
Axle nut torque:
8.5 m-kg (61 ft-lb)
J
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