What should I pay attention to when installing pulleys?

1. Before assembly, it must be cleaned with gasoline for the last time, so as to ensure that all parts are clean and dry, and that the mating surfaces are closely matched, free from oil pollution and have enough friction.

2. Hexagon socket head bolts used for assembly should also be cleaned with gasoline and dried before assembly. Lubricating oil or grease should not be coated in bolts or screw holes to ensure sufficient friction and self-locking ability after bolts are tightened.

3. When the three hexagon socket head bolts are about to be installed in place, they should be tightened in turn to ensure that the taper sleeve is subjected to uniform axial force and that the pulley and the taper sleeve are coaxially positioned.

4. Before installation, check and measure the length of the hexagon socket head bolt for assembly, so as to ensure that the assembly bolt can stand against the bottom of the blind hole of the taper sleeve after fastening, ensure that the conical surface is closely attached, and ensure that the bolt is pushed back by the bottom of the blind hole, resulting in the same locking effect as the double nut principle.

5. After the pulley is fastened, check and adjust the relative position of the driving pulley and the driven pulley by pulling the wire to ensure that the two wheels are in the same plane and the belt tension is moderate.

6, pulley cover should be in good condition, the installation is firm, to ensure that the belt is broken or pulley loose in operation, causing major safety accidents.

7. The taper sleeve belongs to wearing parts. After long-term operation, the inner hole and chain groove may be damaged. Before each assembly, it should be inspected. If defects are found, spare parts should be replaced in time.