|
|
WHEEL AND TIRE DIAGNOSIS TSB Revision WHEEL AND TIRE 31-5 <Confirming Proper Balance> 1. After balancing the wheel, loosen the wing nut and turn the wheel 180 degree angle against the 2. Turn the wheel again 180 degree angle against the balancer's hub. If the wheel becomes <Wheel Balancer Calibration Checks> 1. Mount an undamaged original-equipment alloy rim and tire assembly (wheel) onto your 2. <<Zero Calibration Check>> Loosen the balancer wing nut, rotate the wheel a • If the imbalance is 5 g (0.18 ounce) or less, the zero calibration is OK. Rebalance the wheel, then • If the imbalance is more than 5 g (0.18 ounce), go to Step 3. 3. Loosen the balancer wing nut, rotate the wheel 1/4 turn (90 degree angle), and retighten the nut. • If the imbalance is 5 g (0.18 ounce) or less, the wheel may not be centered on the balancer, or • If the imbalance is more than 5 g (0.18 ounce), the balancer requires calibration. Contact the bal- 4. <<Static Balance Check>> Attach a 5 g (0.18 ounce) weight to the outer rim. 170 to 190 degree angle away from the 5 g (0.18 • If the imbalance is within specification, the static balance calibration is correct. Go to Step 5 to • If the imbalance is out of specification, the bal- ancer requires calibration. Contact the balancer 5. <<Dynamic Balance Check>> Attach a 5 g (0.18 ounce) weight to the inner rim angle away from both the inner and outer 5 g • If the imbalance is within specification, the dynamic balance calibration is correct. The bal- • If the imbalance is out of specification, the bal- ancer requires calibration. Contact the balancer |