Mercury 1996 Grand Marquis Manual page 212

Install the center ornament on the wheel and be
sure it is snapped into place all the way around
using the palm of the hand or a rubber mallet.
Steel wheel with full wheelcover
Steel wheel with full wheelcover
Remove the wheelcover from the wheel using
the flanged end of the wheel nut wrench by
inserting the handle and then prying against the
inner wheelcover flange.
Install the wheelcover on the wheel with the
valve stem extension in the wheel matching the
hole in the wheelcover. Push by hand on the
outside edges of the wheelcover until it is
snapped firmly in place on the wheel.
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