Before dynamically adjusting rear balancer the engine coolant fan must have cycled
once and the coolant temperature must be at least 103°C.
The dead shaft is an eccentric shaft which runs inside the balancer shaft. When rotated
the dead shaft therefore closes or opens the gap between the teeth of the balancer
gear and the teeth of the crankshaft gear.
If the gap between the balancer gear and crankshaft gear is too small a whine is
audible due to the increased load on the gear teeth and bearings.
If the gap between the balancer gear and crankshaft gear is too large a rattle is
audible due to the increased gap between the gear teeth.
Unsatisfactory adjustment of the balancer shaft may cause severe engine damage.
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