Dyson models DC04, DC07 and DC14 are fitted with a switchover mechanism that diverts suction either to the wand or the head unit. It is operated automatically by reclining the machine. Occasionally, the carriage assembly can break necessitating replacement of one or more parts. Here is how to strip the machine down to access that swinging carriage valve mechanism.
Here the photos depict this job being done to a Dyson DC07. The job is almost identical for a DC04 or a DC14 too, although some parts may differ.
The part you are most likely going to need to swap is what Dyson call the “carriage”. Swinging valve mechanism probably makes more sense though. It looks like this:
Its not as straightforward as you might hope, but here goes:
Start by removing your sole plate:
Then remove your brush roll:
Next remove the brush roll housing:
And next remove the two plastic circlips each side of the main body:
Now remove the clutch cover (if your machine has a clutch). The arrows indicate where the screws are:
And remove the clutch cover like so:
Now remove the body from the main unit by gently prising it off the locating lugs as shown:
Having removed the main body housing, you are looking at something like this:
Remove this spring clip using a screwdriver to carefully dislocate it:
Now remove this rubber:
You are nearly there! Insert your screwdriver here to dislodge the mechanism:
And the unit can now be removed and split from the part with the two holes in that clips into it:
Having replaced your defective part, rebuilding is a reversal of the strip down.
Be advised, although they look the same, the carriage (the part on the right in the photo above) are not identical on all DC04’s, DC07’s and DC14’s. Also there are many possible colour variants. Many are no longer available new and/or are a special order part. Dyson will not sell you one directly. The best place to source one from is a Dyson specialist like Manchester Vacs who supplied these photos for this article. You can check out their UK parts listings here: >>Dyson Spares<< which will open in a new window. The parts page for US customers is here: >>Dyson Spares USA<< which will also open in a new window.
Comments and questions are welcome using the comment box below.