Removal Of Liquid Gasket Sealing

WARNING: This page is about a different car, the 2004 Nissan Quest. However, it is still accessible from the selected car via links, so may be relevant.

After removing the mounting bolts and nuts, separate the mating surface using Tool and remove the sealant.
CAUTION: Be careful not to damage the mating surfaces.
In areas where the Tool is difficult to use, use a plastic hammer to lightly tap the areas where the sealant is applied.
CAUTION: If for some unavoidable reason a tool such as a flat-bladed screwdriver is used, be careful not to damage the mating surfaces.

Fig 1: Identifying Plastic Hammer
Courtesy of NISSAN MOTOR CO., U.S.A.