Stand the brush upright and let it dry for at least 24 hours. Never put it back into the unit unless it is completely dry. Refit the brush into the brush bar assembly and ensure that it tightly screwed. Replace the brush bar, plug the unit, and check if the brush is now spinning. The brush in the turbine head has stopped spinning or sometimes it spins at a very slow speed. Called Dyson and they said new turbine head is $135. Vaccum cleaner is around 2.5 years old so no warranty. User #364806 2 posts. Replacement Dyson turbine head for your Dyson vacuum cleaner. For effective dust and dirt removal on all floor surfaces. Stiff nylon bristles rotate at high speed to agitate carpet pile and dislodge ground-in dirt. The air-driven brush bar turns off to protect delicate rugs and hard floors. Fit's: DC19T2, DC19T2 Animal, DC19T2 i, DC19T2 Multi.