Thread Number: 12509
Ye ole typical Dyson clutch problem... |
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Post# 133756 , Reply# 2   4/23/2011 at 09:17 (4,723 days old) by sleepdoc (St. Louis, MO)   |   | |
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Post# 133859 , Reply# 4   4/23/2011 at 17:48 (4,723 days old) by hooverbaby (Dalton in Furness, UK)   |   | |
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in the shop for repair when I still had a business fixing vacuums. It was mainly the grey and yellow DC04s at the time..and to some degree the later DC07 models.
The clutches do indeed make a terrible ratcheting sound when they go wrong..but I would first check that the brushroll and its bearings are free to turn by hand, since trouble there could instigate the fault. They can be a bit of a fath to change, the main thing being carefully levering off the control knob from it's catches. The rest of the job is not too bad; it's necessary to remove 3 torx screws holding the clutch assembly in position, having carefully removed the nozzle plate, brushroll and housing, at least that's the way I used to do them. There's also an elbow joint that needs to be removed. It's also necessary to go through this procedure to replace the motor belt, the narrowest of the two clutch belts. On the odd occasion when I completely stripped down a clutch I found an assembly with ball bearings making contact with a plate..and it is this that slips under certain conditions IIRC. The drive pulleys are usually plastic and I've seen these badly worn/melted on occasions in which case they're scrap. If in doubt, it's best to change the clutch assembly, which is a lot cheaper than a new machine! A word of caution: ensure that the belt is correctly fitted to the brushroll; I once saw one twisted in a figure of eight, which would have made the brushroll rotate the wrong way round! Stephen |