Newmar ~ Slide Seal Replacement
After 21 years the little metal teeth inside the slide seal finally rusted into crumbs. Pulled my slide in to leave for the weekend and right in the middle of the slide about 3 feet of it decided to let go.. Couldn't find any threads or videos specific to How to Replace Newmar seals so I had to figure it out... I thought I'd help the next guy with the experience. I'm sure there's better ways to get this done, but here's what I did today....
I ordered the seal from Newmar directly -same seal they still use. I needed 26 foot, ordered 27 to be safe and they sent a bunch extra. Had 8 foot left over..
Step one was getting the old seal off. Open the slide out about a foot. I took a razor knife and cut the seal strip portion of the rubber seal all the way around and carefully pulled that off. It leaves a lot of the double-sided foam tape goo-residue stuck on the surface. I used a rubber eraser wheel on a cordless drill to remove the residue. Works slow but great as I can't imagine trying to scrap that stuff off with a putty knife... The rubber eraser makes a huge mess of rubber dust as it "erases" the tape residue so I left the old seal in place to keep the mess out of the coach. When done little shop vac'ng to get the dust cleaned up. Then pulled the old seal off. Used 3M Adhesive Remover and a rag to final clean the edge all the way around the slide. Getting the new seal on took a bit of creative tool searching. What I found worked best was a good old Stanley 12 inch Wonder pry bar -Wrapped in duct tape to prevent scratches. Stuff the new seal into the gap and pry bar it into place working with about 3-6 inches at a time.. Stuff the pry bar in deep, push pull the seal in or out to center it on the edge and then lift up on the pry bar to "seat" the seal over the edge. Every foot or so done, I'd go back and double check the seal is fully seated with the prybar -just to be safe. For the 2 corners I used a 12inch 3/8 socket extension. It worked great to stuff the seal fully into the 90 corner. Once it was crimped over the edge fully all the way around. I wiped the inside of the new seal strip and edge down one more time with the Adhesive Remover as the new seal is covered in a white waxy powder and I wanted to make sure the new double sided sticky foam tape on the inside of the seal had a clean surface. Start on one end and start pulling the red plastic off the seal strip and push firmly to stick it down again working with 6 inches or so at at time. I used the approach to NOT stretch the seal before sticking it down. I just stuck it where ever it was naturally laying. The corners on mine have 2 screws shot through the seal strip as an extra measure to hold the corners firm. Don't forget that in the corners you need to cut the "wiper" portion of the seal right in the corner with a razor knife. I did watch a video that suggested to fold the vertical end of the wiper under the top horizontal end of the wiper and use super glue to glue them together.. My old seal was NOT glued. I'm still trying to think that though if I should glue them or not..
All in all, it was a simple but slow going replacement project. Lots of ladder work in the sun.. Took 3+ hours. Hope this one lasts another 21 years !!
Back in Service - Ready for the Next Great Adventure...
'99 Newmar Mountain Aire 4081
Cummins 330HP ~ Spartan Chassis