The transmission system of a motorcycle is a transmission device for motorcycle power. Through the transmission device, the engine power can be transmitted to the tire and converted into speed. In the transmission system, the chain is the most important transmission device. Proper installation of the lubrication chain is an important guarantee for the normal operation of the transmission system.
The quality of the chain installation has a great influence on the normal operation of the chain. Pay attention to the following points when installing:
When installing the chain, first check the meshing of the sprocket and the chain. If the chain roller is found to be unable to fall or is too loose, the chain cannot be installed. Check the chain and sprocket pitch to find out the cause.
Coplanarity should be checked to see if there is axial turbulence, and yaw and tilting are not allowed, otherwise the transmission mechanism and chain will be damaged prematurely.
The circlip of the chain connecting the back of the shaft must be in the neck groove of the axle pin to ensure the safety of the chain. For the open type chain circlip, the device direction must be opposite to the opening of the circlip and the running direction of the chain to prevent the circlip from colliding and falling off during operation.
It should be noted that the loose edge has a suitable initial sag. The initial sag is about 1%-2% of the sprocket center distance.
If the chain is found to be too loose, the motorcycle with adjustable center distance or tensioning device should be properly adjusted. When the wear elongation exceeds 3% of the original chain length, the new chain should be replaced.
During the use of the chain, early fatigue cracks appearing on the chain plates, rollers, pins, etc., should be removed and replaced in time to avoid accidents caused by broken chains. If the friction surface is found to be brown or dark brown, it generally indicates insufficient oil supply and poor lubrication. If dust and oil accumulate on the lubricated chain, it should be cleaned with kerosene in time.
When using the chain, the working surface of the sprocket tooth should also be checked. The normal working surface should have a bright and polished appearance. When it is found that the teeth are ground into a ratchet tooth shape or a pot shape, a new sprocket must be replaced.
If there is visible damage at the end of the outer chain plate and the pin shaft, it indicates that the passage of the transmission system has obstacles, bumps, friction and attachment displacement. At this time, measures should be taken to eliminate bumps and friction.
