Chains
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A chain drive will work longer without problems if correctly installed and serviced. The following information is important for keeping the machine in good condition and reducing repair costs. Check the chains frequently, primarily during the initial hours of operation. Adjust the idlers so that they maintain proper chain tension. The total deflection range of a chain should be approximately 2% of the distance between the shafts of the drive sprocket and idler sprocket. For example: If the distance between the shafts of the drive sprocket and idler sprocket is 250 mm (9.84 in.), the chain should not hang by more than 5 mm (0.20 in.). This distance is measured in the center of the chain span |
on the side opposite the idler sprocket. Make sure that there is no chain deflection on the idler sprocket side before measuring the chain deflection on the opposite side.
A chain with excessive deflection will result in rapid and excessive wear of the chain rollers, sprocket teeth and chain-driven components. A chain that is too tight can damage the bearings and shafts. It can also cause the chain itself to wear faster. Proper chain lubrication is important. Lubrication primarily reduces friction, aids cooling and lessens the effect of minor impacts. The lubricant should penetrate between the plates in order to reach the remaining components (pins, caps and rollers). A graphite lubricant, such as Mobil chain oil (produced by Mobiloil) or similar, or medium-viscosity pure mineral oil is recommended. |
CAUTION:
Do not work on chains when the engine is running.
AG,GG05155,217 -19-15NOV02-1/1 |