[Richard]

John,

Post a pic of your rear bathroom or closet for accurate instructions.

Here are some details. From the engine bay. Remove the air filter and the corresponding hard piping. Then behind the air filter are some aluminum panels. Remove the center one. It should have about 4 bolts in it.

Now look at the ceiling of the engine compartment on either side of the valve cover. You will find at least two bolts and possibly four that go up into the floor of the bathroom. Remove them.

In the coach, and I am assuming you have a rear bath. Look at floor level at the rear. That panel is velcroed in place. Remove it carefully so as not to crack it. Behind the panel, in the center, you will see a wooden section bolted or screwed into place. Remove it.

The outline of the hatch should now be visible to you. Take a thin putty knife and trace the outline to break up any crud in the joint. Go back to the engine bay, put a large block of wood on top of the valve cover, and use a 2X4 as a lever to push upward on the hatch. Some pop loose easily, some require more persuasion.

If you are going to this trouble, by all means adjust the valves, injectors, and jakes while you have the hatch open.