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ContiTech Antriebssysteme GmbHHannover, Germanyaam@ptg.contitech.de

www.contitech.de/aam

Problem – Diagnose – CauseTorsional vibration damper

Torsional vibration damper

Test after 60,000 km Replacement at 120,000 km

ContiTech recommends:Torsion vibration damper should be checked for cracking, deformation and signs of corrosion every 60,000 km.Replacement is advisable every 120,000 km, since not every case of aging/overload is clearly evident in the form of a defect pattern, although it very much impairs the proper functioning of the engine nonetheless. For many applications, the mounting bolts and sealing rings, which are contained in the original Multi V-belt + Torsional vibration damper Kit, must also be replaced.

Micro cracksThere are fine cracks in the rubber track.

Total FailureThe outer ring has separated.The torsional vibration damper is destroyed.

Crack formation45° - Cracks in the vibration isolation track.

BreakoutsThe rubber tracks show breakouts in the area transitioning from rubber to metal.

Hardening of the surface due to aging, which eventually results in failure of damper.

Overheating on the outer ring as a result of belt slippage.

Damage due to extremely high use of idling position, e.g. a taxi.

Overload, e.g. due to Chip Tuning, results in marked recesses on the surface, which, if this continues, will lead to breakouts and a failure in the torsion vibration damper. The deterioration starts on an inner, non visible area of the rubber track.H

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Power Transmission Group Our Drive – Your Success

Problem Diagnosis / Cause

Data, instructions and other technical information available from the PIC at www.contitech.de/pic or simply scan the QR code.