Replacing The Wheel Bearings; Installing The Front Wheel - Yamaha XZ550RJ 1982 Service Manual

Refer to the Tubeless Tire and Aluminum Wheel
Manual for proper tubeless and aluminum wheel
service.
1. Check for cracks, bends, or warpage of the
wheels. If a wheel is deformed or cracked,
it must be replaced.
2. Check wheel run-out. If the deflection ex-
ceeds the tolerance below, check the wheel
bearings or replace the wheel as required.
Rim run-out limits:
Vertical: 2mm (0.079 in)
Lateral: 2mm (0.079 in)
3. Check the wheel balance. Rotate the wheel
lightly several times and note where the
wheel comes to rest. If the wheel is not stati-
cally balanced, it will come to rest at the
same point each time.
ate balance weight at the lightest point (at
top).
NOTE:
The wheel should be balanced with the brake disc
installed.
4. After installing a tire, ride conservatively to
allow the tire to seat itself properly on the
rim. Failure
cause tire failure, resulting damage to the
motorcycle and injury to the rider.
5. After repairing or replacing a tire, check to
be sure the valve-stem locknut is securely
fastened. If not, torque it as specified.
Tightening torque:
2 Mm (0.2m-kg, 1.4fflb)

Replacing the wheel bearings

If the bearings allow pay in the wheel hub or if the
wheel does not turn smoothly, replace the bearings
as follows:
1. Clean the outside of the wheel hub.
Install an appropri-
to allow proper seating may
2. Drive the bearing out by pushing the spacer
aside and tapping around the perimeter of
the bearing inner race with a soft metal drift
punch and hammer. The spacer "floats" be-
tween the bearings. Both bearings can be
removed in this manner.
WARNING:
Eye protection is recommended when using
striking tools.
3. To install the wheel bearing, reverse the
above sequence. Use a socket that matches
the outside diameter of the race of the bear-
ing to drive in the bearing.
CAUTION:
Do not strike the center race or balls of the bear-
ing. Contact should be made only with the outer
race.

Installing the front wheel

When installing the front wheel, reverse the removal
procedure. Note the following points:
1. Lightly grease the lips of the front wheel oil
seals and the gear teeth of the speedome-
ter drive and driven gears. Use lightweight
lithium base grease.
2. Install the speedometer-cable-holder secur-
ing bolt.
Make sure the projecting portion (torque
3.
stopper) of the speedometer housing is posi-
tioned correctly.
1. Torque stopper
114