Four months ago my favourite 620ti failed on corroded end sills. See the attached images in my post on the "So, what have you done" thread here :~
So, what have you done to your Rover 600 Today?
Roverlike's illustrations help. Count the fasteners and their locations. It helped when I sprayed all with good penetrating fluid.
So removal of those side skirts are still fresh in my mind. Several unseen fasteners need removal from under the length of the Plastic Cover sills. There should be a plastic or metal fastener holding the end in the inside of the rear wheel arch. That needs to be removed. There may be one at the front end. That too must be removed.
Then carefully pull the rear end out of the rear wheel arch clear of the metal undersills. Then, using a 4lb Club Hammer, I tapped the rear end forwards to release it from all those white plastic fasteners. It then came away freely. Two of the plastic fasteners ( A Side Clip in Roverlike's lower drawings ) became fractured. Fortunately in a local breaker yard was a Honda with it's Sills already removed exposing all those Side Clips. I collected about seven of those in good shape.
Simply assemble all the clips onto the plastic skirts and offer them up to the series of holes one the length of the metal side sills. Then press the side cover against all the locations after lining up those Side Clips with their appropriate holes. Then a sharp slap with the hand will see those Slide Clips compress as they enter their location holes and then expand holding the sill secure. Those clips are designed to do that. That takes less than five seconds once you've lined them up correctly. Wish removal of the side skirt sills was as easy.
I removed them as leaving them in place would involve extra labour time charges for removal ~ at least half and hour ~ and heavy handed treatment would almost certainly damage parts. Particularly those plastic Side Clips with their little rubber seals which are at least £2 each last time I looked.
By removing those side skirts, my pro-welder was able to work immediately on and repair those corroded rear wheel arch locations.