SPROCKET TROUBLESHOOTING
CHAIN BRAKE STRESS Symptoms : An overly tightened strap around the drum will cause the strap to rub against the clutch drum which will overheat and soften the metal causing potential drum failure.
TYPICAL DRUM STRESS Symptoms : Check daily for cracks, splits, or excessive wear in the sprocket clutch drum.
Remedy : If the drum is cracked, split, broken or shows excessive wear as illustrated below, replace the drum immediately with a new one.
Remedy : Always check the brake to make sure it stops the rotating chain when activated. Make certain that the brake strap around
the drum is not too tight. Regularly inspect drum, adaptor spline and rim. Replace immediately if damaged. Skirt Wear/Brake Band Spline wear / Adapter damage
Broken/cracked skirt
Cracked oil pump lug
Worn inner diameter
Worn clutch, worn inner diameter
Worn Rim and Adaptor Spline
RIM AND SPUR SPROCKET DAMAGE SPUR SPROCKET DAMAGE Cause : This condition can
RIM DAMAGE Cause : Wear can occur under normal conditions. However, check for excessive rim wear and look for wear on outer diameter. Symptoms : The reduction in diameter can also allow chain drive links to damage the sprocket adaptor. Remedy : Replace the rim after two chains and inspect rim regularly. Oregon rim incorporates wear-depth indicators which helps identify when it's time to replace the rim. SEVERE RIM DAMAGE Do not fit cutting chain to rims that are severely worn. Serious chain damage will result and the rim may break.
occur when cutting chain drive links wear through the case- hardened spur teeth. Symptoms : Cutting chain can be ruined by damaged spurs. Remedy : If spur sprocket teeth look like this replace immediately.
Technical Informations
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