Wheel, Balancing On Stationary Balancing Machine

Test drive performed. Refer to ROAD TEST, PERFORMING BEFORE BALANCING .

Tension Wheel on Balancing Machine

NOTE:

Please keep in mind that cleanliness is extremely important when balancing, as it is when performing any other repair work. Only then can a proper result be obtained!

Dirt and rust in the area of the contact surfaces and centering of the wheel distort the result.

-- Clean contact surfaces, centering seat and wheel disc using the :VAS6446 before tensioning wheel on balancing machine!.

NOTE:

It is very important that the wheel balancing machine uses the correct system for centering and tensioning the tires when replacing them. Reference the information for the Wheel Balancing Machine Centering System before beginning any work.

-- Tension the wheel with the tire on the balancing machine.

Fig 1: Tension The Wheel With The Tire On The Balancing Machine

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

NOTE:

To mount wheel on wheel balancer, use for example :VAS5271 .

Fig 2: Identifying Wheel Centering System Adapter VAS 5271

Courtesy of VOLKSWAGEN GROUP OF AMERICA, INC.

This way a 100% centering of the wheel and gentle mounting is possible!

It is not possible to center it 100% on balancing machine with conical tensioners.

With a deviation of 0.1 mm outside the center, there is an imbalance of 10 grams on the wheel/tire.

Wheel/Tire Balancing Procedure

-- Let the wheel/tire turn on the balancing machine.

-- Check the run of the characteristic lines on the sidewall of the tire in the area of the rim flange.

-- Check the tire wear pattern while the wheel/tire is turning.

NOTE:

In the event of one-sided wear, flat spots from braking or severe wear spots, smooth running cannot be achieved by balancing. In this case, the tire must be replaced.

-- Check the run-out on the wheel/tire. If the wheel with tire runs untrue although there are no flat spots, a radial or lateral run-out may be the cause.

-- Check wheel with tire for radial- and lateral run-out. Refer to WHEELS AND TIRES, RADIAL AND LATERAL RUN OUT, CHECKING WITH TIRE DIAL GAUGE .

-- If the radial and lateral run-out are within the specified tolerance, balance the wheel and tire.

NOTE:

Do not use more than 60 grams of weight per wheel.

If more weight is necessary, a smoother running can achieved by matched mounting of the tire. Matched mounting of tire. Refer to WHEELS AND TIRES, MATCHING .

The display in the balancing machine should show 0 grams.

:VAS6230B4 can be inserted as an alternative to matching. Refer to VIBRATION CONTROL SYSTEM .

-- Install the wheel on the vehicle.

-- First, tighten the lowest wheel bolt hand-tight to approximately 30 Nm.

-- Tighten the remaining wheel bolts diagonally to approximately 30 Nm. This process centers the wheel on the wheel hub.

-- Lower vehicle onto its wheels.

-- Now use a torque wrench to tighten the wheel bolts diagonally to the specified tightening specification.

Road Test, Performing

-- Perform a road test after balancing the wheel/tires.

If a vibration is still detected during the road test, the cause may be due to tolerance in the wheel centering.

The component tolerances of wheels and wheel hubs can be additive in unfavorable cases. Vibration can result from this. This can be eliminated using a finish balancer. Refer to WHEEL, BALANCING WITH FINE BALANCING MACHINE (FINISH BALANCER) .