Now, some of you will remember that I’ve written about a similar issue before, but I think it’s worth covering again as often, complete replacement items need to be purchased, which can be costly.
This Bissell Powerlifter Pet vacuum cleaner had snapped a belt, due to an obstruction in the roller/ beater area and while the casing was open to replace the belt, I removed the beater to see how smoothly it turned. It was noisy.
Seemingly, Bissell will only supply a complete unit for around £30, with shipping, so given the overall value of the machine, it seemed sensible to have a look at the noisy component on the bench. The bearing housings, located at each end of the roller, come out easily and with some careful manipulation, each bearing can be removed.
On this unit, both bearings were dirty and dry. Now, I could have replaced them with a generic bearing, but in the spirit of thrift, I decided to clean the bearing races with brake cleaner and then repack with high-melt-point grease. When reassembled to the roller/ beater, it ran very smoothly and was much quieter, once re-fitted to the vacuum cleaner. Job done.
This Dyson DC14 came into the workshop with a couple of problems. The first was a lack of suction power and the second was a horrible noise from the front of the vacuum cleaner. It got to the workshop just in time.
A bypass valve is fitted to most vacuum cleaners without a bag and is there to prevent damage if a blockage exists somewhere in the airways or the owner has neglected to empty the collection bin. In this case, the valve seemed to be stuck open, causing suction power to be lost.
The valve on the DC14 (other Dyson models are similar) is a small device situated near the exhaust filter. the valve itself is a clear tube with a rubber sealed cap controlled by a spring. In normal operation, the cap seals a hole to the outside world, but if there’s a blockage, the pressure of the spring is overcome and air is allowed past the cap.
In this case, the valve was dirty and stuck. Repair required dismantling with normal household tools (small screwdriver and pliers) and cleaning using a damp cloth. A small squirt of silicone spray on the rubber seal ensured a smooth operation upon reassembly.
The noise was traced to the front of the vacuum cleaner. The roller/ beaters were making a horrible noise when in use and it wouldn’t have been too long before complete failure would have occurred.
Spare roller/ beaters are readily available from Dyson directly and from many aftermarket suppliers at reasonable prices. Since the beaters were in good condition, it seemed reasonable to have a go at a repair. The small ball bearing races at each end of the beater are easily removed and upon inspection, both were very stiff in operation. Fortunately, the bearings used by Dyson were of good quality and as the dust covers were easily removed, all that was required was a clean with solvent cleaner and a re-grease. Once refitted, the roller/ beaters sounded as they should again.
Cost of a replacement Dyson vacuum cleaner, circa £250, cost of repair £1 (bit of cleaner, grease, silicone spray.