Onya Mudski... sanity at last... I can't be stuffed playing the game anymore.
The shim thickness for the knuckle flanges is determined with a force gauge using a 'selected on test' method.
The combination of OEM shims allows for various thickness in approx .05mm steps to be used so the correct preload is applied.
Previous shim size is irrelevant if the installation has been disturbed so it becomes unique to each assy from measurements obtained with the force gauge.
The method is pretty much the standard engineering practice for low speed, low friction bearing installations.
Install the preload (shims in this case), test the torque, adjust the shims, test the torque, repeat until the correct torque is obtained.
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