Did a big rebuild on my DC07 All Floors last year and it ran great until last month when the clutch to brushbar belt broke,actually had worn to about half its width before giving up.
It took me a while to get somewhere with this one as I initially thought ok,pattern belt - low quality.As well as the belt failure,lots of the plastic case surrounding the belt had abraded badly,especially the coloured brushroll housing where it only has a small gap either side of the belt where it fits over the brushbar. After fitting a new clutch belt it was clear this was not a simple belt failure issue,more of a belt running off-center in a big way on the brushbar,it was always running into the edge of the plastic housing and clearly wearing itself and anything else to bits! I tried bending the lower assembly and twisting all the lower head/footplate bits to try to get the belt to run true with no success.
Even refitted the clutch to try and a get a slight "lean" as the belt ran through its gap in the lower plastics.In desperation I tried to smooth off the brushbar area with wet & dry where the belt ran and started to work out that the brushbar should maybe not have a concave surface where the belt ran but maybe a convex shape.A closer look at a couple of photos of new brushbars confirmed that the brushbar had worn down badly and was the main culprit.
I wrapped some thin masking tape around the brushbar spindle to build it up a little and it then was obvious that the belt ran more central without mashing itself up.What a learning curve!
I had a pretty much complete lower footplate with brushbar assy. tucked away for years and really should have looked this over first,it would have been so easy to have worked out where the wear had taken place.Fitting this section has re-aligned the belt reasonably well where it spins the brushbar so no more plastic erosion for a long while - I hope. Anyone else had this sort of issue before.Is there anything else in the DC07 that can cause the clutch belt to run off center?
Ok, the small plastic thingy issue
There is a black plastic sprung roller clip which is fixed into the underside of the footplate,it moves as the cleaner is pushed along and acts as a guide running in a channel in the lower casing.It also seems to lock the footplate in postion when the machine is fully upright.Does this part which appears to have a small plastic roller actually rotate as the cleaner is moved eventually wear out? On both the ones I have the roller part of this seems to be worn down and the groove in the lower body of the machine casing is starting to be worn down by this thingy not actually rolling along the plastic groove which I am guessing is what it should do.Is this what you might expect with an elderly DC07 All Floors or is this daft little part something to replace at some point? I don't want to have to replace the complete lower casing as the thingy is starting to wear channels in the guide area of the casing.Anyone got an answer to this please?