pulley assembly and installation precautions

1. Gasoline must be used for the last cleaning before assembly to ensure that all components are clean and dry to ensure that the mating surfaces are tight and free of oil and have sufficient friction.
2. Before installing the assembly, the hexagon socket bolts should be cleaned with gasoline and dried. Do not paint the bolts or screw holes with grease or grease to ensure that the bolts have sufficient friction self-locking ability.
3. When the three hexagon socket bolts are to be installed in place, they should be tightened in turns to ensure uniform axial force on the sleeve and ensure that the pulleys and sleeves are well positioned on the same axis.
4. Check the length of the hexagon socket bolt for measuring and assembling before installation to ensure that the assembly bolt can withstand the bottom end of the blind hole of the sleeve sleeve to ensure that the cone surface is tightly fitted and the bolt is subjected to the reverse thrust of the bottom end of the blind hole. The double nut principle acts like a locking effect.
5. After the pulley is fastened, pull the cable to check and adjust the relative positions of the main and driven pulleys to ensure that the two wheels are in the same plane and the belt tension is moderate.
6. The pulley cover should be intact and firmly installed to ensure that the belt breaks or the pulley loosens during operation to cause a major safety accident.
7. The taper sleeve is a wearing part. After a long period of operation, the internal hole and the chain groove may be damaged. Each time before assembly, it shall be inspected and the defect shall be promptly replaced.