The noise I am experiencing is coming from the very bottom of the awning arms, where they rest against the awning frame that is mounted to the sidewalls of the motorhome. If I pull on the bottom of the awning arm, I call easily pull it out 1 ½ inches. According to Dometic, this shouldn’t be possible. After several months, several calls to Dometic and two visits to two different RV dealers, I finally fixed the problem myself.
The first Dometic rep I spoke to told me to take the RV to an authorized Dometic awning dealer. I did, and the dealer had no idea how to fix the issue. I called Dometic back and the second rep suggested I order a bushing kit from them, that was designed for this issue. I received a small bag of plastic bushings with no installation instructions whatsoever. I had no idea where they were suppose to go, so I called Dometic again. A different rep told me the bushings would not help my issue at all, and had no idea why the second rep sent them to me.
She suggested I take the coach to a different dealer and gave me the name of one close to home. The owner of this shop said he had never heard of this issue and the only fix he could think of was the replace the gas struts that are located within the awning arms. I wasn’t crazy about this idea for one simple reason: these same struts collapse to drain rainwater when the awning is left open in the rain. It takes a great deal of water weight to collapse the struts as is, so I don’t want anything stiffer.
Frustrated with the suggestions of the “experts”, I went to Lowe’s and bought the below rubber cushions. I bought two different type. I experimented with the two in different locations and they seem to work best in the location shown in the photos. The two cushions rest against each other when the awning is closed. No more awning arm knocking while traveling.
I thought I would pass this along in case someone else suffers with this same irritating noise.