Dual Mass Flywheels- a pain in the neck ? Riginally to smooth out diesel engined cars heavy clutches

Dual Mass Flywheels

watch out if your clutch is slipping you may have a dual mass flywheels gone as well?

Dual Mass Flywheels-As with most tyre and auto centres these days we multi-task and carry out all types of repair work, we are blessed to have mechanics that are capable of doing the other more

Dual Mass Flywheels

Dual Mass Flywheels-A recent DMF that we have fitted

difficult kinds of jobs.

One of the main problems we are finding at the moment is the number of cars that are having clutch problems.This is no real problem to us and we take it in our stride, but the most frightening thing that is becoming prevalent is the increasing number of cars that are requiring Dual Mass Flywheels.

What are dual mass flywheels

In the old days we had a simple clutch plate mechanism that would cost perhaps £200 to £300 to repair, from a small to a large car, now thanks to modern technology we have clutch and flywheels that are part of the same unit. The problem is that you can diagnose a faulty clutch but not a DMF Problems (dual mass flywheel). This seems to affect all makes of vehicles we have fitted them on VWs and Toyota’s this week alone, also on Mercedes.

The idea came out to accommodate the modern demands of the lightweight diesel engines, modern motorists demand their diesel engine runs just as smooth as a petrol engine, also giving better fuel consumption. The DMF acts like a damper between the engine and the gearbox to give a smoother ride when changing gears on a manual transmission system.

Basically, there are two types of DMF. One is made up of a primary and secondary flywheel containing springs and cushions. There is a ring between the outer and the inner flywheel that allows them to slip, this is to stop any damage to the transmission when any torque loads exceed the pressure of the vehicles rating of the transmission.

Dual Mass Flywheels

Of course, the ring is the weak spot and can wear out when too much continual engine loads are applied. We find that this could be the reason that problems seem to occur mostly in people carriers.

Of course, the second type has planetary gearing. Specially made for vehicles with low-revving engines. Hence, that give out stronger vibrations when doing low revs. This type should give much smoother gear changes on diesel engines, similar to the same performance as a petrol engine, also giving a better fuel consumption.

I hope that this is informative and that you don’t need one replacing, but if you do look forward to a big garage bill DMF Failure.

 About Eric Roberts

Hi, I would like to introduce myself. I have worked in the Garage and tyre industry now for 40 years.