Damaged wheel parts may fail and cause an acci-
dent resulting in serious injury or death. Never at-
tempt to repair a damaged wheel part. If the wheel
part is damaged, it must be replaced with a new one.
Remove the front and rear axles (see Front/Rear Wheel
Visually inspect the front and rear axle for damages.
If the axle is damaged or bent, replace it.
Place the axle in V blocks that are 100 mm (3.94 in.) [A]
apart, and set a dial gauge [B] on the axle at a point
halfway between the blocks. Turn [C] the axle to mea-
sure the runout. The difference between the highest and
lowest dial readings is the amount of runout.
If axle runout exceeds the service limit, replace the axle.
Axle Runout/100 mm (3.94 in.)
TIR 0.03 mm (0.0012 in.) or less
Service Limit: TIR 0.2 mm (0.008 in.)
Remove the front and rear wheels (see Front/Rear Wheel
Support the wheel so that it can be spun freely.
Spin the wheel lightly, and mark [A] the wheel at the top
when the wheel stops.
Repeat this procedure several times. If the wheel stops
of its own accord in various positions, it is well balanced.
If the wheel always stops in one position, adjust the wheel
balance (see Balance Adjustment).
If the wheel always stops in one position, provisionally
attach a balance weight [A] on the rim at the marking using
Rotate the wheel 1/4 turn [B], and see whether or not the
wheel stops in this position. If it does, the correct balance
weight is being used.
If the wheel rotates and the weight goes up, replace the
weight with the next heavier size. If the wheel rotates and
the weight goes down, replace the weight with the next
lighter size. Repeat these steps until the wheel remains
at rest after being rotated 1/4 turn.
Rotate the wheel another 1/4 turn and then another 1/4
turn to see if the wheel is correctly balanced.
Repeat the entire procedure as many times as necessary
to achieve correct wheel balance.
Permanently install the balance weight.