This is something we have seen a few times, and again today with a machine we had sold that came back a few months later.
When you recline the machine, this is supposed to happen:
However, on many we see, if you turn the machine on first, then try to recline it, or try to stand it up while it is still running, the mechanism doesn't move because it stays locked in place due to the suction. Sometimes, the actuator rod comes out of the circular wheel that drives the mechanism.
Sometimes, cleaning the mechanism and lubricating it cures it. Today we had one that showed no sign of mechanism wear, and worked perfectly when the machine was switched on after
reclining it or standing it up. But powering it up first, then
reclining it (as most people do) means it stayed locked in place. This isn't the first one we have seen that does this.
We usually get around this by fitting an after-market motor with slightly less power than the original. This reduces the suction at the carriage mechanism just that little bit that then allows the mechanism not to stay locked in one position. Hardly ideal is it?
We always put new motors in DC27's we sell (because we don't want them back under warranty as they are a pain to strip down)
. A few months ago, we fitted new YV-16K24ED (914779-06) genuine Dyson motors to some (because we happened to get some in a deal)
. This machine that came back was one fitted with a genuine motor. We are fitting a non-genuine motor to it tomorrow to hopefully cure it.
It is our opinion
that this constitutes a design fault with DC27's. This was first touched upon here in 2011 in this topic
. This may be why the DC27 had such a short production run and was rapidly replaced with the DC33 which reverted back to a similar carriage mechanism used in the previous DC04/7/14 machines.
Does anyone have any thoughts, experiences or opinions on this?