Car Problem Reports

Mercedes-Benz ML350 Harmonic Balancer May Fail and Damage Timing Cover

Mercedes-Benz ML350 Problem
4 Reports
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Model Years Affected: 2003, 2004, 2005


The rubber bond in the harmonic balancer can decay, which causes the balancer to move and work its way toward the timing cover. If the balancer comes into contact with the timing cover while the engine is running, it will fracture and damage the cover and potentially other surrounding parts. The harmonic balancer should be inspected at every service.

  • Visitor, , 47,900 mi

    My harmonic balancer failed. I needed a new water pump, coolant lines and a belt. When the balancer failed my fan started to vibrate and one of the belts broke off and became wrapped around the fan.

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