PDF associated: /HarmonicBalancersTS.pdf

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HARMONIC BALANCERS APPLICATIONS Harmonic balancer applications with a rubber dampening insulator between the outer ring and inner hub PROBLEM Engine won t run properly difficulty timing the engine runs rough vibration from engine when running CAUSE The rubber insulator between harmonic balancer outer ring and the inner hub has degraded The outer ring has moved throwing the timing marks out of position Accurate timing of the engine is not possible DIAGNOSIS Closely inspect the harmonic balancer in the area of the insulator rubber ring If the insulator rubber is hanging out or the rubber has degraded replace the balancer Compare the replacement balancer to the original Use the key way as a reference point If the timing mark on the original is not in the same position as the replacement replace the balancer NOTE in extreme situations severe engine damage can result from engine detonation due to incorrect timing