Schaeffler China

The Smart Move!

Many vehicle manufacturers choose to equip new models with a Dual Mass Flywheel – and the trend is growing. The reasons for this are the technical benefits provided by the DMF as well as the need for increasing noise comfort while reducing emissions of state-of-the-art engines. The DMF characteristics are precisely attuned to each vehicle.

Always check the Dual Mass Flywheel (DMF) when replacing the clutch. A worn and defective DMF can damage the newly installed clutch!

A 100% functional test of the Dual Mass Flywheel includes among other things testing the characteristics of the Arc Springs during compression. This testing can only be carried out using a special test facility.

In addition, your assessment of the DMF’s operational reliability should be based on the following criteria:

• grease egress
• condition of the friction surface (e.g. signs of thermal load / thermal cracks)
• noise emissions
• condition of the clutch, etc
• mileage

When uncertain, always replace the DMF along with the clutch.

The LuK DMF special tool (part no. 400 0080 10) allows you to perform the most important measurements – freeplay angle and rock – in a workshop environment.