What is Dual Mass flywheel Clutch

In every vehicle, clutch transmits engine power to the gearbox and allows the transmission to be interrupted while a gear is selected to move off from a stationary position, or when gears are changed while the car is moving.

Most cars use a friction clutch operated either by a cable (common type) or by fluid(hydraulic type).

Since 2002, Dual Mass Flywheel clutch mechanism has been fitted in all four-cylinder diesel car with manual, DGS and ESG GEARBOXES. More than half of the cars on the UK roads these days have this type of clutch. This type of clutch is being used by a long list of manufacturers, including big boys such as Audi, BMW, and Volvo. For all your Clutch repair and replacement, you can come to Sterling Clutch and brakes Auckland .

A Dual mass flywheel consists of two parts, one attached to the engine, and the other to the clutch, both linked by a system of springs and friction pads.


The dual mass flywheel is primarily designed to reduce noise and vibrations. The DMF is sort of a mechanical “sponge”, where vibration and harshness in the drive-line are dampened by two flywheel masses that are connected to one another by a series of high strength springs. Any roughness is absorbed though partly by the springs between the flywheel masses.

DMF acts as a shock absorber: each flywheel is a solid connection, but between there is a “soft” spring that takes the jolt out of accelerations, gear changes, etc.

Problems with Dual Mass Flywheel Clutch

Dual mass flywheels are subject to a range of problems, including wear of the friction pads and rattling springs when starting or stopping the engine, a shuddering when vehicle is being driven at low revs while a vehicle is heavily loaded; gives a difficulty in selecting gears when the engine is running; overheating is caused by a slipping clutch, and there is clunking from around the gearbox.

The next biggest complaints people have about the dual mass flywheels is how often they need to be replaced and how expensive they are. The dual mass unit cannot be resurfaced and must be thrown away once worn out. So replacement of DMF is costly.

The other common issue relates to performance. DMF is ‘tuned’ for a specific torque output. If the vehicle’s engine is upgraded to produce more power via a tuner turbocharger upgrade, it will increase torque output, DMF will be subject to more stress than it was designed to handle. This will eventually cause the DMF to fail and lead to clutch slippage, more noise, cause the vehicle to shift roughly.

The owners of diesel cars with automatic gearbox don’t have to worry about the clutch. These cars don’t have a dual mass flywheel, as the torque converter- the system which automatically adjusts when the gear is selected as the car is being driven- it helps to mitigate the vibrations and stress placed on the vehicle when the gear is being selected.

When your car need clutch replacement then the question arises which mechanic or garage you’re to trust. You can come to Sterling Clutch and Brake Auckland and get genuine OEM Luk clutch Kit parts. You can book an appointment on the phone to get advice on how to maintain your car’s Clutch and brakes in top condition. You can mail your query at https://Sterlingbrake.co.nz/ or call @09-636-4919.