Balancing

PRELIMINARY

CAUTION: It is essential that all wheel balancing is carried out off the vehicle. The use of on the vehicle balancing could cause component damage or personal injury and MUST NOT be attempted.

NOTE:
^ Before attempting to balance a wheel and tire assembly clean all mud and dirt deposits from both inside and outside rims and remove existing balance weights.
^ Remove stones from the tire tread in order to avoid operator injury during dynamic balancing and to obtain the correct balance.
^ Inspect tires for damage and correct tire pressures and balance according to the equipment manufacturer's instructions.

WEIGHT PLACEMENT

Wheel/Tire Cross Section:

Clean area of wheel rim and attach adhesive balance weights in position shown.

Tape On Wheel Weight:

Cut through rear face of weight strip to detach required weights.

CAUTION:
^ Use only the correct adhesive balance weights to avoid damage to the aluminium rim.
^ DO NOT attempt to use a steel wheel weight on an aluminium wheel.

STATIC BALANCE
Wheel Tramp:





A. Heavy spot.
B. Add balance weights here.
C. Center line of spindle.

NOTE:
^ Static balance is the equal distribution of weight around the wheel.
^ A statically unbalanced wheel will cause a bouncing action called wheel tramp.
^ This condition will eventually cause uneven tire wear.

DYNAMIC BALANCE
Wheel Shimmy:





A. Heavy spot.
B. Add balance weights here.
C. Centre line of spindle.

NOTE:
^ Dynamic balance is the equal distribution of weight on each side of the centre line so that when the wheel spins there is no tendency for side to side movement.
^ A dynamically unbalanced wheel will cause wheel shimmy.

OFF VEHICLE BALANCING
Balance wheel assembly referring to equipment manufacturer's instructions.
It is essential that the wheel is located by the centre hole NOT the stud holes. To ensure positive wheel location the diameter of the locating collar on the machine shaft must be 112.80 to 112.85 mm, (4.441 to 4.443 inch). This diameter will ensure that the collar fits correctly within the centre hole of the wheel.
Where possible always use the vehicle wheel retaining nuts to locate the wheel on the balancer, to avoid damaging the wheel. If this is not possible, the locating nuts must be of a similar pattern to the original wheel nuts. The use of conical type wheel nuts for this purpose may damage the surface on alloy wheels.