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Isolation Test Procedure

WARNING: This page is about a different car, the 2007 Suzuki XL7. However, it is still accessible from the selected car via links, so may be relevant.

Perform the following test in order to determine if force variation is present in the vehicle.

  1. Substitute a set of KNOWN GOOD, pre-tested tire and wheel assemblies of the same size and type for the suspected original assemblies. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION .
  2. Road test the vehicle to determine if the vibration is still present. Refer to VIBRATION ANALYSIS - ROAD TESTING .
  3. If the vibration is still present while using the known good set of tire and wheel assemblies, then force variation is not the cause of the vibration.
  4. If the vibration is eliminated when using the known good set of tire and wheel assemblies, install one of the original tire and wheel assemblies using the matchmarks made prior to removal. Refer to TIRE AND WHEEL REMOVAL AND INSTALLATION . Road test the vehicle to determine if the vibration has returned. Refer to VIBRATION ANALYSIS - ROAD TESTING .
  5. Continue the process of installing the original tire and wheel assemblies one at a time, then road testing the vehicle, until the tire and wheel assembly, or assemblies which is causing the vibration has been identified.
  6. Replace the tire, or tires on the vibration-causing tire and wheel assembly, or assemblies, then balance the assembly, or assemblies. Refer to TIRE AND WHEEL ASSEMBLY BALANCING - OFF VEHICLE .
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