The top will not just come off unfortunately as access to the interior section of ranges is usually limited because there really isn't anything in there. The top will lift up, but then you will need to remove every screw that blocks your access starting with the ones holding the burner box in place located under the top itself. The top will also be hinged in some way and it too will need to be removed. You are looking to get into the top so start there. The side panels may not be removable like on the new ones so you may also need to remove the front panel in order to get to the entire insulation pad. And my suggestion for insulation would be to purchase a blanket from an appliance part distributer and simply cut it to fit.

I was needing to find out if replacing the insulation helped you. I just got my stove out of storage and can not turn the oven on cause the odor is so bad it ran us out of the house. We took the top of the stove apart and about half the insulation is missing and the rest has been used as a nest for mice with 3 dead ones in there. We need to know if replacing it will help and if so where would we find it.

I am working on the same issue. I have an oven which some mice go into, Been scrubbing and cleaning but am certain i will be replacing the insulation now. I am certain you will need high temperature Insulation.

Superwool Fiber - 2" Thick (sold per sq. ft.)

This 2" but they all have 1". Let me know how things are coming along. I am trying to get this cleaned up here.

I am dismantling the entire oven by removing all the metal housing and pulling all the insulation out and replacing it since the insulation seems to have absorbed the smell of urine.

Any other pointers?

Today i took the Oven completely apart. I have taken all the galvanized metal and been etching it with a metal cleaner and then bleaching to do a final sanitizer. i will be ordering the insulation from the site I listed about. i will also be replacing the wiring which was chewed on by the mice.

The metal came out really good with the metal cleaner.... with very little effort better yet.

i will be sure to post updates since there doesnt seem to be much out there on the topic and when there is limited discussions as well as follow up. I will post in my original topic posted in this forum.

This is work I am performing on My double decor Wall Oven.