Wheel Balancer Calibration Checks

Loosen the balancer wing nut, rotate the wheel a half-turn (180 degrees), and retighten the nut. Recheck the balance.

• If the imbalance is 5 g (0.18 ounce) or less, the zero calibration is OK. Rebalance the wheel, then go to Step  4 to check static balance.
• If the imbalance is more than 5 g (0.18 ounce), go to Step 3.

• If the imbalance is 5 g (0.18 ounce) or less, the wheel may not be centered on the balancer, or the balancing cones, the cup, and/or wing nut are damaged, dirty, or inappropriate for the wheel. You may need to refer to the balancer manufacturer's instructions to verify the correct attachments. After making the necessary corrections, recheck the wheel balance. If OK, then go to Step 4.
• If the imbalance is more than 5 g (0.18 ounce), the balancer requires calibration. Contact the balancer manufacturer for calibration by their repair representative.

Attach a 5 g (0.18 ounce) weight to the outer rim. Recheck the balancer. The balancer should detect 5 ± 2 g (0.18 ± 0.06 ounce) of imbalance 170 to 190 degrees away from the 5 g (0.18 ounce) weight.

• If the imbalance is within specification, the static balance calibration is correct. Go to Step 5 to check the dynamic balance.
• If the imbalance is out of specification, the balancer requires calibration. Contact the balancer manufacturer for calibration by their repair representative.

Attach a 5 g (0.18 ounce) weight to the inner rim at 180 degrees opposite the 5 g (0.18 ounce) weight that was added in Step  4. Recheck the balance. The balancer should detect 5 ± 2 g (0.18 ± 0.06 ounce) of imbalance 170 to 190 degrees away from both the inner and outer 5 g (0.18 ounce) weights.

• If the imbalance is within specification, the dynamic balance calibration is correct. The balancer calibration checks are complete.
• If the imbalance is out of specification, the balancer requires calibration. Contact the balancer manufacturer for calibration by their repair representative.