If you check out the first 2 -3 pages there are already a load of postings on this one.
DCT
April 2005
I posted the same question a few days ago but received no replies. I took the machine to a repair shop and was told a "special tool" was needed. It cost me £20 for the privilege. Hope you have better luck.
howtomendit.com for free repair help, information and advice.
Try fixfault.com to fix vacuum cleaners.