Pulley Assembly for HITACHI Vacuum Cleaner Part removed from the power head (D-DP31) Please perform replacement and repair at your own risk. - Brand: HITACHI - Model Name: PV-BH500A1-005 - Application: Vacuum cleaner parts - Applicable models: Suction nozzle part numbers: D-AP50, D-AP51, D-AP53, D-AP54, D-DP11, D-DP14, D-DP15, D-DP17, D-DP19, D-DP22, D-DP24, D-DP25, D-DP26, D-DP28, D-DP30, D-DP31, D-DP32, D-DP33, D-DP34, D-DP35 Additional Explanation: "Pulley assembly" refers to a part used in the head of Hitachi vacuum cleaners, specifically the pulley that transmits power from the motor to the rotating brush. When replacing the rotary brush, it is recommended to check for looseness and replace the pulley if necessary.