Mitsubishi 3000GT Service Manual page 697

REAR AXLE eFWD>
Caution
Care must be taken not to scratch or scar the rotor's
toothed surface, and not to drop it.
If the rotor's toothed surface is chipped or the rotor is
deformed, it might not be able to accurately sense the
wheel rotation speed and the system as a result might
not perform normally.
INSTALLATION SERVICE POINT
After tightening the wheel bearing nut, align with the spindle's
indentation and crimp.
TSB Revision
27-5