HI busy working on a dc17 at the moment.
They use a completely differant cover and motor , the dc17 has a separate motor to drive the brush roll( like the dc25)
It used a Panasonic motor similar to that used in the dc25 for vacuum
I am trying to find my parts diagram to send to you.
It is similar to the UK model dc27 although that uses just one motor ( same as the dc14 )