I've really appreciated all the help I've gotten from this forum.
I finally got around it fixing my leaky window. In case anybody else is researching how to do this project, I've included several pictures below to help out.
I was really apprehensive about the job at first, removing a whole window seems like a serious proposition.
However, it went pretty well and the whole thing took me less than a couple of hours. It hasn't rained hard yet, so I really don't know how well it has worked...
First, here is a corner of my window where it leaked. When it occurred, it temporarily patched it with duct tape. That was my wife's good idea.
Next, the duct tape removed showing that same section.
Next, I removed those plastic covers. They just slide off. I did break one of them, but I found some replacement ones at my local dealer.
Next, I removed about 5 billion of those little screws from around the window frame.
One thing that I didn't picture is the actual removal of the window. Ater the screws were taken out, I took the plastic putty knife and ran it all along the perimeter into the gunky sealing tape between the window and trailer siding. That sort of broke it loose so that I could remove the window. This shows me removing some of the old sealant after I had removed the window.
I took the new butyl tape that I got from my local Boat n RV dealer and placed in all around. I pushed it down a bit so that it sealed well.
I replaced the window, and pushed it in a bit, then started replacing those 5 billion screws.
As I screwed them all in tightly, the butyl tape squishd out around the edges. I used the putty knife to "cut" the excess off.
The finished product. Notice that I hadn't replaced the plastic trim yet.
To anyone else that is doing this job, I hope this helps!
Now I need to move onto fixing the paneling and water damage inside.