I've got a fan that's been working but needed cleaning. Found lots of dust and cleaned it all up. Now the only way the fan works is to push the motor shaft a little. It seems to push in and out. Anyone know what this is? Not come across it before. As timer is electronic it can't be that. Thanks
Over time dirt or rust can build up on the shaft, as long as not touched, the shaft will run in the same place where there is no dirt or rust in the sintered bearings, but once disturbed it can end up in a new bit of the shaft, with fans for things like Myson fan assisted radiators I have spent the time manually cleaning the shaft and re-oiling it all, at £500 plus well worth the effort.
Not sure worth it for a cheap fan, but if you can't get a replacement then sewing machine oil on the bearings is the way to go. Use very light oil, old 3 in 1 etc. Not heavy engine oil.
Don't get oil everywhere, you don't want a fire risk, likely you will need to remove fan to get to both bearings, and on some you can't get to bearings anyway.
bobwiff, unless you can get to and clean all the bearings I would NOT use any lubricant. The reason being if you add lubricant to bearings that are contaminated with foreign bodies all you will do is make a paste which will put more strain on the motor causing it to overheat and possibly catch fire. If you can clean them, all well and good, if not, for £20 get a new fan.
DIY how to tutorial projects and guides - Did you know we have a DIY Projects section? Well, if no, then we certainly do! Within this area of our site have literally hundreds of how-to guides and tutorials that cover a huge range of home improvement tasks. Each page also comes with pictures and a video to make completing those jobs even easier!