COATS 950 Pro Racer Wheel Balancer - Manual (Page 16)

10 • COATS 950 Pro Racer Wheel Balancer
Changing Wheel Information During
Balancing
The information entered into the balancer for A, W,
and D can be changed at anytime during the balancing
procedure. Follow the instructions provided earlier for
entering the measurements manually. The balancer
will recalculate weights and positions based on the
new measurements.
Changing Balancing Modes During
Balancing
The balancing mode can be changed at anytime and
the balancer will recalculate weight and position
based on the new selection. Does not apply when
switching to and from Match Mount.
Checking the Balance
After applying the weights indicated by the balancer,
respin the wheel. The displays should read 0.00.
If the balancer indicates an additional weight should
be applied in the same location as the first weight, the
first weight is too small. Correct the first weight and
respin.
If the balancer indicates an additional weight should
be applied directly opposite the first weight, the first
weight is too big. Correct the first weight and respin.
If the balancer indicates an additional weight should
be applied at an angle to the first weight, the first
weight was not applied in the correct position. Move
the first weight towards the position indicated for the
second weight or add the second weight as indicated.
After Balance Vibration Problems
If vibration is still present after balancing the wheels
and driving the vehicle on smooth pavement remove
the wheels and recheck the balance. If a wheel is out
of balance the cause may be:
1. A weight has come off the wheel. Remove the
other weights from the wheel and rebalance.
2. Tire slippage on the wheel. Remove and remount
the tire using proper tire lubricant and inflate to 40
PSI. Do not over-inflate. Rebalance the wheel and
reduce air pressure to recommended PSI.
3. Stones or other foreign objects caught in the tire
tread. Remove the objects and repair tire as neces-
sary. Check and rebalance if needed.
If the balancer still indicates the wheels are balanced
to within 0.05 ounces on both inner and outer dis-
plays, the problem is not in the balance of the wheels.
Check the following possible sources of vibration:
1. Tire pressure. Bring all tires up to the recom-
mended PSI.
2. Radial or lateral runout in the tire or wheel.
Replace the damaged part.
3. Foreign material inside the tire. Remove the tire
from the wheel, remove the material, and remount.
Remove wheel weights and rebalance the wheel.
4. Imbalanced wheel covers or trim rings. Remove
the wheel covers or trim rings and test drive. If the
vibration is gone, remove the arbor and use the
optional Combi-Adapter to mount the wheel to the
balancer. Balance the wheel with the wheel cover or
trim ring attached to the wheel.
5. Incorrectly mounted wheel. Remount correctly.
6. Damaged wheel bolt holes. Replace wheel.
7. Worn universal joints. Replace as required.
8. Drive shaft imbalanced or damaged. Balance,
repair, or replace.
9. Imbalanced brake rotor(s) or drum(s).
10. Suspension out of alignment. Align the vehicle
and replace any damaged or worn parts.
Pro Racer