There is not procedure for this in our manual but it is usually a hunt and peck kind of job anyway.
First remove battery cables.
Next remove fueses and make sure you have the diagram under the fuse box cover to replace them, removing them may not be necassary if you can access all retaining screws. Remove all retaining screwws. Remove the three main power screws to the box.
On the back of the fuse box carefuly dis-connect the electrical connectors as they may have becaome somewhat brittle with heat and time. They are usually pinch type conncetors.
Then the fuse box should pull away.