Pulley occasions are our more common, such as the original pulley, when installed, is necessary to pay attention, so as to ensure the normal use of the pulleys, the following, we take a look precautions pulley assembly bar . 1, prior to assembly last clean gasoline must be used to ensure that all parts of a clean and dry surface to ensure that they meet with the close and no oil, there is enough friction. 2, the assembly with the inner hexagon bolt assembly also be applied before wash and dry gas, not the bolt or screw holes in the coating of oil or grease to ensure that after the bolts have sufficient frictional self-locking ability. 3, within three hexagonal bolts fastening turns need to be installed in place in order to ensure uniform sleeve by axial force, ensure the pulley and the sleeve positioned coaxially good. 4, pre-installation check the measurement assembly with the hexagon bolt length to ensure that after mounting bolts can withstand the drogue blind hole the bottom, in order to ensure cone closely, and to ensure that the bottom of the blind hole bolt by reverse thrust, produce the same principle of double nut locking effect. 5, after fastening the cable pulley check and adjust master, the relative position of the driven pulley, ensuring two rounds in the same plane and belt tensioner moderate. 6, the pulley cover should be intact and securely installed to ensure operation in a broken belt or pulley loose exits lead to major accidents. 7, the sleeve parts subject to wear, after a long run, the hole and chain groove damage may occur, should be checked before each assembly, spare parts found defective should be replaced. 

palabras clave: Pulley, the pulley, the pulley,