Mounting Procedure

You must use the following procedure to mount the wheels/tires on balance machines to achieve maximum accuracy in measurements.

Please review SIR video Volume 28, entitled Understanding Wave Forms (distribution date February 17, 1997) before performing this procedure.





1. Inspect the balance machine back plate, spindle shaft as well as the adapters. Make sure they are clean and free of dirt. If necessary, clean them with a silicone spray or WD4O and wipe dry.





2. Insert the correct number of studs into the flange plate according to the reference card provided in the kit for the vehicle model and year you are working on. The reference card and the table below have the correct bolt pattern diameter and stud quantity for each applicable vehicle.

3. Install the spring on the balance machine spindle shaft.

IMPORTANT:
Use the spring provided with the adapter kit. Using other springs may cause incorrect wheel balance measurements. If your machine has a built-in spring, the spring (from the kit) is not required.

4. Select and install the cone that best fits the center hole of the wheel you are working with. The cone supplied with the adapter kit is specifically for the QX4.

CAUTION:
Make sure the cone does not contact any casting portion of the wheel. This will cause incorrect balancing measurements.

5. Install the wheel/tire on the cone with the valve stem at the top (12 o'clock position).

6. Install the flange plate (with studs) on the spindle shaft.

7. Install the wing nut on the spindle shaft. Make sure the valve stem is in the 12 o'clock position while turning the wing nut. Also, the flange plate studs must be aligned with the wheel lug nut holes.

8. Make sure the back plate and wheel are in contact. There must be flat contact between the wheel and balance machine back plate in order to achieve correct measurements. It is important to shake the wheel/tire assembly back and forth as you tighten the wing nut. This will help to avoid wobbling which may result from binding between the contact surfaces of the wheel and cone.

9. Spin the wheel manually to ensure the wheel/tire assembly does not wobble in rotation. If wobbling is detected, dismount the assembly. Check for any binding between the wheel and cone or for improper assembly of the items as stated above.

10. Balance the wheel (to zero) according to the measurements.

11. Use the following procedure to check the mounting accuracy/repeatability of the measurement:

A. Make note of the spindle position. Make a reference mark on the spindle shaft or back plate in the 12 o'clock position.

B. Loosen the wing nut.

C. Shake and rotate the wheel in relation to the back plate of the wheel balance machine. Hold the spindle shaft/plate stationary in the 12 o'clock position and rotate the wheel on the cone.

D. Tighten the wing nut with the valve stem in the 12 o'clock position.

E. Use the non-rounded measurement mode to balance the wheel again (repeatability must not be over 3 grams and any additional weight must be within 10 degrees of the placement in step 10).

12. If accuracy/repeatability of measurements continue to be over 3 grams, check the calibration or call your wheel balance machine manufacturer for maintenance.

13. Mount the wheel/tire assembly on the vehicle with the valve stem in the 12 o'clock position.