WHEEL ALIGNMENT SETTING PROCEDURE
Bulletin Number - 0008
Issue - 1
Date - 10.02.1999
Model - All models
Affected Range - All vehicles
Re-Issue Information -
WHEEL ALIGNMENT SETTING PROCEDURE - MISINTERPRETATION
Incomplete wheel alignment setting procedure resulting in incorrect wheel alignment.
Wheel alignment instructions supplied by various wheel alignment equipment suppliers are incomplete. Implications are that run-out compensation is not required.
WHEEL RUN-OUT COMPENSATION:
The normal wheel setting procedure is to register the alignment equipment measuring head against the wheel rim. However this is not a tightly controlled and toleranced area of the wheel. Any dimensional variation in this area will result in a level of run-out relative to the axis of the wheel, causing inaccurate geometry readings which will need to be compensated for. When carrying out wheel alignment checks using ANY type of alignment equipment, run-out compensation MUST be carried out. ALWAYS TAKE AN AVERAGE OF 3 READINGS.