My brush bar is rattling when using my dc07, I removed the bar and belt and ran the machine which works perfectly with no abnormal noises.
I have replaced the brush bar but the noise remains.
I have noticed when using the machine when I drag it back the cleaner head jumps up and down, I also notice the cleaner head assembly is very loose at one side, there seems to be a lot of free play at one side of the brush bar, which can easily be pulled in and out of where it attaches.
Are the cleaner head assemblies bad for wearing where they attach?